Non-stick pan and preparation process therefor

Abstract

A non-stick pan, relating to the technical field of kitchenware. The non-stick pan comprises the following layers sequentially formed from the outside to the inside: a substrate layer, at least one primer layer, and at least one surface layer. The primer layer is a transition metal layer. The surface layer is a multi-element alloy layer, and at least comprises a transition metal multi-element alloy layer. The transition metals in the transition metal multi-element alloy layer comprise at least one transition metal element from Group IVB and at least one transition metal element from Group VIB, and the atomic content of the transition metal element from Group IVB is lower than that of the transition metal element from Group VIB.

Description

Non-stick pan and preparation process thereof

[0001] This application claims priority of the Chinese patent application number 202410307820.9 filed with the Patent Office of China on March 18, 2024, entitled “A non-stick pan and its preparation process”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present invention relates to the technical field of kitchenware, in particular to a non-stick pan and a preparation process thereof. Background Art

[0003] To address the stickiness of traditional frying pans, a non-stick coating is typically added to a stainless steel pan to achieve a non-stick effect. These coated pans are known as non-stick pans. Prior art uses organic coatings for non-stick coatings, but kitchen utensils like spatulas and steel wool can accelerate the shedding of the non-stick coating during use. This significantly weakens the pan's non-stick properties and can lead to health problems if the coating is accidentally ingested. With growing consumer demand for non-stick frying pans, developing non- or no-coating non-stick pans that are non-toxic, healthy, and offer excellent non-stick properties has become a pressing technical challenge in the field.

[0004] Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a 0-coating non-stick pan to overcome the problems of easy peeling of the coating and poor non-stick effect in the prior art.

[0006] In a first aspect, in order to achieve the above-mentioned object, the present invention provides the following technical solution: a non-stick pan, which is formed from the outside to the inside with: a base material layer, at least one base layer, and at least one surface layer;

[0007] The base layer is a transition metal layer, for example, a titanium metal layer, a chromium metal layer or a zirconium metal layer;

[0008] The surface layer is a multi-component alloy layer, which includes at least a transition metal multi-component alloy layer; the transition metal in the transition metal multi-component alloy layer includes at least one transition metal element in group IVB and at least one transition metal element in group VIB, and the atomic weight content of the transition metal element in group IVB is lower than the atomic weight content of the transition metal element in group VIB.

[0009] Compared to existing technologies, the present invention sequentially forms a base layer, at least one primer layer, and at least one surface layer from the outside inward. The primer layer serves as a transition layer between the base layer and the surface layer, ensuring bond strength between the base layer, primer layer, and surface layer. Furthermore, the surface layer comprises a multicomponent alloy layer of at least one transition metal. By forming the multicomponent alloy layer of transition metals, and particularly by limiting the atomic percentage of the transition metal element from Group IVB in the multicomponent alloy layer to less than the atomic percentage of the transition metal element from Group VIB, the resulting surface layer exhibits excellent anti-stick properties.

[0010] Furthermore, the transition metal element in Group IVB includes at least one of titanium and zirconium; and / or,

[0011] The transition metal element in Group VIB includes at least one of chromium, molybdenum and tungsten; and / or

[0012] In the multi-element alloy layer, the atomic percentage of the IVB group transition metal element is 20-45%, and the atomic percentage of the VIB group transition metal element is 55-80%.

[0013] Compared to the prior art, by limiting the Group IVB transition metal elements to include titanium and / or zirconium and the Group VIB transition metal elements to include at least one of chromium, molybdenum, and tungsten, the multi-element alloy layer formed from these different elements can not only form a good metallurgical bond with the base layer, but also have a synergistic effect between the selected different elements, enabling the surface layer to have excellent anti-stick properties. In particular, when the atomic percentage of the Group IVB transition metal elements is further limited to 20-45% and the atomic percentage of the Group VIB transition metal elements is further limited to 55-80%, the inventors' tests have found that under these conditions of the atomic weight ratio of the Group IVB transition metal elements to the Group VIB transition metal elements, the resulting surface layer has particularly excellent non-stick properties.

[0014] Furthermore, the multi-element alloy layer also includes any one or more of the transition metal elements of Group IB, Group IIB, Group VB and carbon elements; wherein, the transition metal elements in Group IB include at least one or more of copper and silver; the transition metal elements in Group IIB include zinc; and the transition metal elements in Group VB include Nb.

[0015] Compared with the prior art, the above-mentioned specific types of transition metal elements in Group IB, Group IIB and Group VB, together with Group IVB transition metal elements, Group VIB transition metal elements and carbon elements, can form a multi-component alloy, wherein the main part of the Group IVB transition metal elements and the Group VIB transition metal elements serve as matrix alloy elements, and the Group IB, Group IIB and Group VB and carbon elements, and sometimes also a small amount of Group VIB transition metal elements, form a carbide alloy, which can be uniformly dispersed in the multi-component alloy matrix and form a continuous carbide alloy phase in the multi-component alloy matrix. At the same time, the carbide alloy phase can further penetrate into the base layer, so that a stable metallurgical structure is formed between the surface layer and the base layer. The formation of this structure greatly improves the metallurgical bonding between the surface layer and the base layer, further improves the bonding strength between the non-stick surface layer of the cookware and the base layer, and greatly improves the non-stick property and service life of the cookware.

[0016] Furthermore, in the multi-element alloy layer, the atomic percentage of the transition metal element of group IB is 0-15%; the atomic percentage of the transition metal element of group IIB is 0-15%; the atomic percentage of the transition metal element of group VB is 0-10%; and the atomic percentage of carbon is 0-15%.

[0017] Compared to the prior art, the selective addition of the aforementioned specific amount of at least one transition metal element from Groups IB, IIB, VB, and carbon to the multi-element alloy layer can further enhance the metallurgical bonding between the surface layer and the base layer. In the multi-element alloy layer prepared within the aforementioned range, the primary components of the Group IVB and Group VIB transition metal elements form a multi-element alloy matrix, while the metal elements from Groups IB, IIB, and VB, along with carbon, and sometimes a small amount of the Group VIB transition metal element, form a carbide alloy. The carbide alloy is dispersed within the multi-element alloy matrix, and portions of the carbide alloy phase can further penetrate the base layer. This structure provides a surface layer with an appropriate hardness, ensuring excellent non-stick properties while maintaining a more stable metallurgical bond with the base layer, significantly extending the life of the cookware.

[0018] Furthermore, the multi-element alloy layer further includes at least one or more of aluminum, silicon and nitrogen; and / or,

[0019] Aluminum accounts for 0 to 25% of the total atomic percentage of the multi-element alloy layer; and / or,

[0020] The silicon element accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer, preferably 0 to 3%; and / or,

[0021] The nitrogen element accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer, preferably 0 to 5%.

[0022] Compared with the existing technology, the multi-element alloy layer further includes any one or more of aluminum, silicon and nitrogen elements, which together with any one or more of Group IB transition metal elements, Group IIB transition metal elements, carbon elements, and Group IVB transition metal elements and Group VIB transition metal elements form a multi-element alloy matrix, which can further improve the non-stick performance of the product.

[0023] Furthermore, the substrate layer includes a stainless steel material layer, a stainless steel composite material layer, a titanium material layer or a titanium composite material layer; and / or,

[0024] The thickness of the primer layer is 0.1μm to 3μm;

[0025] The surface layer thickness is 0.1μm to 5μm.

[0026] Furthermore, the non-stick pan is sequentially formed with: a base material layer, a first bottom layer, a second bottom layer, a first surface layer and a second surface layer from the outside to the inside;

[0027] The thickness of the first base layer is 0.5-3 μm, the thickness of the second base layer is 0.1-3 μm, the thickness of the first surface layer is 0.1-3 μm, and the thickness of the second surface layer is 0.3-5 μm.

[0028] Compared to the prior art, a first base layer is formed on the surface of the base layer, serving as a transition layer between the base layer and the second base layer, thereby improving the connection between the two layers. A first surface layer is then provided on the second base layer, serving as a transition layer between the second base layer and the second surface layer, thereby improving the connection between the second base layer and the second surface layer. In particular, the thicknesses of the first base layer, the second base layer, the first surface layer, and the second surface layer are further specified. At these specific thicknesses, the base layer and surface layer produced through the layered preparation process can reduce internal stress between adjacent layers, thereby improving the stability of the connection between the layers of the cookware.

[0029] Furthermore, the non-stick pan is sequentially formed with: a base material layer, a first bottom layer, a second bottom layer, a first surface layer and a second surface layer from the outside to the inside;

[0030] The first primer layer comprises a pure chromium layer or a pure titanium layer; the second primer layer comprises chromium nitride or titanium nitride;

[0031] The first surface layer is a transition layer, and the transition layer includes chromium nitride, titanium nitride, and aluminum nitride alloy elements;

[0032] The second surface layer includes a multi-element alloy layer of chromium, titanium, aluminum, copper and nitrogen. In the multi-element alloy layer of the second surface layer, the atomic percentage of chromium is 40-58%, the atomic percentage of titanium is 20-38%, the atomic percentage of aluminum is 0-15%, the atomic percentage of copper is 2-7%, and the atomic percentage of nitrogen is 3-15%. The sum of the atomic percentages of each element is 100%.

[0033] Compared to the prior art, a first base layer is formed on the surface of the substrate layer, a first surface layer is formed on the first base layer, and a second surface layer is formed on the first surface layer. The first base layer serves as a transition layer between the substrate layer and the second base layer, and the first surface layer serves as a transition layer between the second base layer and the second surface layer. The provision of each transition layer can improve the connection performance between the layers. In particular, the first base layer is further defined as a pure chromium layer or a pure titanium layer, and the second base layer is chromium nitride or titanium nitride; the first surface layer is a transition layer comprising chromium nitride, titanium nitride, and aluminum nitride alloy elements; and the second surface layer comprises a multi-element alloy layer of chromium, titanium, aluminum, copper, and nitrogen. Under these specific composition conditions, the internal stress between adjacent layers can be reduced, improving the metallurgical connectivity and joint strength between adjacent layers. Furthermore, the multi-element alloy layer formed by the specific composition of the surface layer can significantly improve the non-stick properties of the surface layer, giving the surface layer excellent anti-stick properties.

[0034] In a second aspect, the present invention further provides a process for preparing a non-stick pan, which uses the non-stick pan and comprises the following steps:

[0035] Substrate layer pretreatment;

[0036] forming at least one primer layer on the inner surface of the substrate layer, wherein the primer layer is a titanium metal layer and / or a chromium metal layer;

[0037] At least one surface layer is formed on the side of the base layer away from the substrate layer, and the surface layer is a multi-component alloy layer, and the multi-component alloy layer at least includes a transition metal multi-component alloy layer. The transition metal in the transition metal multi-component alloy layer includes at least one transition metal element in Group IVB and at least one transition metal element in Group VIB, and the atomic weight content of the transition metal element in Group IVB is lower than the atomic weight content of the transition metal element in Group VIB.

[0038] Compared with the prior art, the preparation process of the non-stick pan of the present invention has the same beneficial effects as the above-mentioned non-stick pan, which will not be described in detail here.

[0039] Furthermore, the base layer is prepared by a magnetron sputtering process or a multi-arc ion plating process, and the target material includes titanium, titanium alloy, chromium or chromium alloy; and / or,

[0040] The surface layer is prepared by magnetron sputtering or multi-arc ion plating, and the target material includes at least one metal or alloy of titanium and zirconium in group IVB, and at least one metal or alloy of chromium, molybdenum and tungsten in group VIB.

[0041] Furthermore, the magnetron sputtering process conditions are as follows: substrate bias voltage is 30-800 V, process gas is one or a mixture of Ar, N2, C2H2, and working gas pressure is 0.2-4 Pa; or,

[0042] The multi-arc ion plating process conditions are as follows: substrate bias voltage is 30-800V, process gas is one or a mixture of Ar, N2, C2H2, and working gas pressure is 0.2-4Pa. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] The present invention provides a non-stick pan, which is formed from the outside to the inside in the following order: a base layer, at least one base layer, and at least one surface layer. The base layer can be made of stainless steel, a stainless steel composite material, titanium, or a titanium alloy.

[0045] The base layer is a transition metal layer, for example, a titanium metal layer, a chromium metal layer or a zirconium metal layer;

[0046] The surface layer is a multi-component alloy layer, which includes at least a transition metal multi-component alloy layer. For example, the transition metal includes at least one transition metal element in Group IVB and at least one transition metal element in Group VIB.

[0047] In some embodiments, the transition metal element in Group IVB includes at least one of titanium and zirconium; the transition metal element in Group VIB includes at least one of chromium, molybdenum, and tungsten.

[0048] In some embodiments, the atomic weight content of the transition metal element of Group IVB is lower than the atomic weight content of the transition metal element of Group VIB. For example, the atomic percentage of the transition metal element of Group IVB can be 20-45%, for example, 20%, 35%, 40%, 45%, preferably 35-45%. The atomic percentage of the transition metal element of Group VIB can be 55-80%, for example, 55%, 60%, 65%, 80%, preferably 55-60%.

[0049] In some embodiments, the multi-element alloy layer further comprises any one or more of a Group IB transition metal element, a Group IIB transition metal element, a Group VB transition metal element, and carbon. For example, the Group IB transition metal element comprises at least one or more of copper and silver; the Group IIB transition metal element comprises zinc; and the Group VB transition metal element comprises niobium.

[0050] By adopting the above technical solution, any one or more of the above-mentioned specific amounts of Group IB, Group IIB, Group VB and carbon elements are selectively added to the multi-element alloy layer, and the main part of the Group IVB transition metal elements and Group VIB transition metal elements form a multi-element alloy matrix. The metal elements of Group IB, Group IIB and Group VB and carbon elements, and sometimes a small amount of Group VIB transition metal elements form a carbide alloy phase. On the one hand, the carbide alloy phase can be dispersed in the multi-element alloy matrix, and on the other hand, it can penetrate into the base layer, thereby further improving the metallurgical bonding between the surface layer and the base layer.

[0051] In some embodiments, the atomic percentage of the Group IB transition metal element in the multi-component alloy layer is 0-15%, for example, 0%, 4%, 6%, 7%, 10% or 15%, preferably 2-6%.

[0052] In some embodiments, the atomic percentage of the transition metal element of Group IIB in the multi-element alloy layer is 0-15%, for example, 0%, 3%, 11% or 15%, preferably 0-5%.

[0053] In some embodiments, the atomic percentage of the VB group transition metal element in the multi-element alloy layer is 0-10%, for example, 0%, 4%, 6% or 10%, preferably 4-6%.

[0054] In some embodiments, the atomic percentage of carbon in the multi-element alloy layer is 0-15%, for example, 0%, 3%, 5% or 15%, preferably 3-5%.

[0055] By adopting the above technical solution, the addition amount of transition metal elements from Group IB, Group IIB and Group VB is further limited. The above-mentioned specific addition amount of transition metal elements and carbon elements, and sometimes also a small amount of certain elements in the multi-component alloy matrix, form a carbide alloy phase, which can be evenly distributed in the multi-component alloy matrix and form a continuous carbide alloy phase in the multi-component alloy matrix. At the same time, the carbide alloy phase can further penetrate into the base layer, so that a stable metallurgical structure is formed between the surface layer and the base layer. The formation of this structure greatly improves the metallurgical bonding between the surface layer and the base layer, further improves the bonding strength between the non-stick surface layer of the cookware and the base layer, and greatly improves the non-stick property and service life of the cookware.

[0056] In some embodiments, the multi-element alloy layer further comprises at least one or more of aluminum, silicon, and nitrogen. For example, aluminum accounts for 0 to 25% of the total atomic percentage of the multi-element alloy layer, for example, 2%, 10%, 15%, 20%, or 25%, preferably 10 to 20%; silicon accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer, for example, 2%, 3%, 5%, 8%, 11%, or 15%, preferably 0 to 3%; and nitrogen accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer, for example, 2%, 3%, 5%, 8%, 11%, or 15%, preferably 0 to 3%.

[0057] By adopting the above technical solution, the multi-element alloy layer further includes any one or more of aluminum, silicon and nitrogen elements, which together with any one or more of Group IB transition metal elements, Group IIB transition metal elements, carbon elements, and Group IVB transition metal elements and Group VIB transition metal elements form a multi-element alloy matrix, which can further improve the non-stick performance of the product.

[0058] In some embodiments, the thickness of the base layer is 0.1 μm to 3 μm, preferably 0.5 μm to 1.5 μm; the thickness of the surface layer is 0.1 μm to 5 μm, preferably 1.0 μm to 2.0 μm.

[0059] In some embodiments, the base layer may include a first base layer and a second base layer, and the surface layer may include a first surface layer and a second surface layer. It should be understood that in this case, the cookware is formed from the outside to the inside with: a base layer, a first base layer, a second base layer, a first surface layer, and a second surface layer.

[0060] In some embodiments, the thickness of the first base layer is 0.5μm to 3μm, preferably 0.5μm to 1μm; the thickness of the second base layer is 0.1μm to 3μm, preferably 0.2μm to 0.5μm; the thickness of the first surface layer is 0.1μm to 3μm, preferably 0.2μm to 0.5μm; the thickness of the second surface layer is 0.3μm to 5μm, preferably 0.5μm to 1μm.

[0061] Using the above technical solution, a first base layer is formed on the surface of the base layer. The first base layer serves as a transition layer between the base layer and the second base layer, thereby improving the connection between the base layer and the second base layer. A first surface layer is then provided on the second base layer, serving as a transition layer between the second base layer and the second surface layer, thereby improving the connection between the second base layer and the second surface layer. In particular, the thicknesses of the first base layer, the second base layer, the first surface layer, and the second surface layer are further specified. At these specific thicknesses, the base layer and surface layer produced through the layered preparation process can reduce the internal stress between adjacent layers, thereby improving the stability of the connection between the interlayer structure of the cookware.

[0062] In some embodiments, the non-stick pan is formed from the outside to the inside with: a base layer, a first bottom layer, a second bottom layer, a first surface layer, and a second surface layer. For example, the first bottom layer includes a pure chromium layer or a pure titanium layer; the second bottom layer is chromium nitride or titanium nitride; the first surface layer is a transition layer, and the transition layer includes chromium nitride, titanium nitride, and aluminum nitride alloy elements; the second surface layer includes a multi-element alloy layer of chromium, titanium, aluminum, copper, and nitrogen, and the multi-element alloy layer of the second surface layer has an atomic percentage of chromium of 40-58%, an atomic percentage of titanium of 20-38%, an atomic percentage of aluminum of 0-15%, an atomic percentage of copper of 2-7%, and an atomic percentage of nitrogen of 3-15%, and the sum of the atomic percentages of each element is 100%.

[0063] Using the above technical solution, a base layer is formed on the surface of the substrate layer, a first surface layer is formed on the base layer, and a second surface layer is formed on the first surface layer. The first surface layer acts as a transition layer, which can improve the bonding performance between the base layer and the second surface layer. In particular, the base layer is further limited to a pure chromium layer or a pure titanium layer, the first surface layer is chromium nitride or titanium nitride, and the second surface layer is a multi-component alloy layer of chromium, titanium, aluminum, and copper. Under these specific composition conditions, the internal stress between the two adjacent layers can be reduced, improving the metallurgical connectivity and bond strength between the adjacent layers. Furthermore, the multi-component alloy layer formed by the specific composition of the above surface layer can significantly improve the non-stick properties of the surface layer, giving the surface layer excellent anti-stick properties.

[0064] In a second aspect, the present invention further provides a process for preparing a non-stick pan, which is applied to the above-mentioned non-stick pan and comprises the following steps:

[0065] S1. Pretreatment of the substrate layer. In this step, the pretreatment of the substrate layer includes constructing a micron-level rough surface on the surface of the substrate layer. The specific construction process can be referred to CN111493648B. Of course, the micron-level rough surface can also be constructed by commonly used sandblasting processes in the prior art.

[0066] S2. Form at least one primer layer on the inner surface of the substrate layer, wherein the primer layer is a titanium metal layer and / or a chromium metal layer.

[0067] In some embodiments, the base layer is formed by a magnetron sputtering process or a multi-arc ion plating process, and selectable target materials include titanium, chromium, zirconium, and the like, or alloys thereof;

[0068] S3. At least one surface layer is formed on the side of the base layer away from the substrate layer, the surface layer is a multi-component alloy layer, the multi-component alloy layer at least includes a transition metal multi-component alloy layer, the transition metal in the transition metal multi-component alloy layer includes at least one transition metal element in Group IVB and at least one transition metal element in Group VIB, and the atomic weight content of the transition metal element in Group IVB is lower than the atomic weight content of the transition metal element in Group VIB.

[0069] In some embodiments, the surface layer is prepared by a magnetron sputtering process or a multi-arc ion plating process, and the target material includes at least one metal or alloy of titanium and zirconium in group IVB, and at least one metal or alloy of chromium, molybdenum, and tungsten in group VIB.

[0070] In some embodiments, when the surface layer further includes any one or more of Group IB transition metal elements, Group IIB transition metal elements, and Group VB transition metal elements, as well as carbon, the target material may also include an alloy target material composed of Group IB, Group IIB, Group VB transition metal elements, and carbon. In specific applications, the target material may also be an alloy target material including copper, silver, zinc, niobium, and C. As another example, the target material may also include any one of copper, silver, zinc, niobium, or alloy targets of any one or more of these, as well as a graphite target material.

[0071] In some embodiments, the magnetron sputtering process conditions are as follows: substrate bias voltage is 30-800 V, process gas is one or a mixture of Ar, N2, C2H2, and working pressure is 0.2-4 Pa; or,

[0072] In some embodiments, the multi-arc ion plating process conditions are as follows: the substrate bias voltage is 30-800V, the process gas is one or a mixture of Ar, N2, C2H2, and the working gas pressure is 0.2-4Pa.

[0073] In order to better illustrate the technical solution of the present invention, the present invention also provides the following specific examples. It should be understood that the raw materials used in the following examples are all commercially available raw materials unless otherwise specified.

[0074] Example 1

[0075] An embodiment of the present invention provides a non-stick pan, which is formed from the outside to the inside with: a base layer, a base layer, and a surface layer; wherein the base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, and the base layer is a titanium metal layer; the surface layer is a carbonitride of a titanium-chromium alloy, and the titanium atomic percentage of the titanium-chromium alloy layer is 20%, the chromium atomic percentage is 78%, and the remainder is carbon and nitrogen elements. The base layer has a thickness of 0.8 μm and a thickness of 0.7 μm.

[0076] The non-stick pan in this embodiment is prepared using a magnetron sputtering process, which specifically includes the following steps:

[0077] S1. Install the target material. Install the target material required for pot coating in the vacuum coating chamber. The base target material is a titanium target and the surface target material is an alloy target composed of CrTi;

[0078] S2, vacuum wash the target. After installing the target, close the chamber door and vacuum, and the vacuum is pumped to 9×10 -3 Pa, start target washing. Introduce process gas into the chamber to make the working pressure in the chamber reach 1Pa, turn on the sputtering power supply to wash the target. The process gas for target washing is highly inert argon, and the target washing power supply is a sputtering DC power supply with a power density of 3W / cm 2 , target washing time is 60 minutes.

[0079] S3, coating of pots. After the target is washed, open the cavity to amplify the gas to break the vacuum, put the pot on the sample rack, introduce the process, and start vacuuming. The vacuum degree should not be less than 9ⅹ10 -3 Pa, the chamber is heated up, and the preset temperature is 220 ° C. When the substrate reaches the preset temperature and vacuum degree of the process, a certain amount of process gas is introduced to start coating. The specific coating process flow is as follows: first, plasma cleaning is performed, and then the base layer and the surface layer are formed in sequence on the substrate layer.

[0080] The plasma cleaning bias voltage is 600 V, the process gas is Ar, the working gas pressure is 1 Pa, and the plasma cleaning time is 15 minutes.

[0081] The base material is titanium. When the base material is plated, the substrate bias is 300V, the thickness of the plated film is controlled at 0.8μm, the process gas is Ar, and the working gas pressure is 1Pa.

[0082] The surface layer material is carbonitride of CrTi alloy. When coating the surface layer material, the substrate bias is 200V, the thickness of the plated film is controlled at 0.7μm, the process gas is Ar, N2, C2H2, and the working gas pressure is 2Pa.

[0083] S4. The pot is removed from the cavity. After the coating is completed, the cavity is cooled down, the cavity is opened and the pot is removed from the oven to obtain a non-stick pot.

[0084] Example 2

[0085] An embodiment of the present invention provides a non-stick pan, which is formed with: a base layer, a first base layer, a second base layer, a transition layer, and a surface layer in sequence from the outside to the inside; wherein the base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, and the first base layer is a chromium metal layer; the second base layer is a chromium nitride layer, and the transition layer is a chromium nitride, titanium nitride and aluminum nitride alloy layer; the surface layer is a titanium-chromium-aluminum-copper-nitrogen multi-element alloy layer, and the atomic percentage of titanium element in the titanium-chromium-aluminum-copper-nitrogen multi-element alloy layer is 25%, the atomic percentage of chromium element is 40%, the atomic percentage of aluminum element is 15%, the atomic percentage of copper element is 5%, and the atomic percentage of nitrogen element is 15%; the thickness of the first base layer is 0.4μm, the thickness of the second base layer is 0.2μm, the thickness of the transition layer is 0.3μm, and the thickness of the surface layer is 0.6μm.

[0086] The non-stick pan in this embodiment is prepared using a magnetron sputtering process, which specifically includes the following steps:

[0087] S1. Install the target materials. Install the target materials required for pot coating in the vacuum coating chamber. The first base layer target is a chromium target, the second base layer target is a chromium nitride target, the transition layer target is a chromium nitride, titanium nitride, aluminum nitride target, and the surface layer target is an alloy target composed of titanium, chromium, aluminum, copper and nitrogen.

[0088] S2, vacuum wash the target. After installing the target, close the chamber door and vacuum, and the vacuum is pumped to 9×10 -3 Pa, start target washing. Introduce process gas into the chamber to make the working pressure in the chamber reach 1Pa, turn on the sputtering power supply to wash the target. The process gas for target washing is highly inert argon, and the target washing power supply is a sputtering DC power supply with a power density of 3W / cm 2 , target washing time is 60 minutes.

[0089] S3, coating of pots. After the target is washed, open the cavity to amplify the gas to break the vacuum, put the pot on the sample rack, introduce the process, and start vacuuming. The vacuum degree should not be less than 9ⅹ10 -3 Pa, the chamber is heated up, and the preset temperature is 220 ° C. When the substrate reaches the preset temperature and vacuum degree of the process, a certain amount of process gas is introduced to start coating. The specific coating process flow is as follows: first, plasma cleaning is performed, and then the base layer and the surface layer are formed in sequence on the substrate layer.

[0090] The plasma cleaning bias voltage is 600 V, the process gas is Ar, the working gas pressure is 1 Pa, and the plasma cleaning time is 15 minutes.

[0091] When coating the first base material, the substrate bias voltage is 300 V, the thickness of the plated film is controlled at 0.4 μm, the process gas is Ar, and the working gas pressure is 1.2 Pa.

[0092] When coating the second base layer material, the substrate bias voltage is 200 V, the thickness of the plated film is controlled at 0.2 μm, the process gas is Ar, and the working gas pressure is 1.0 Pa.

[0093] When coating the transition layer material, the substrate bias voltage is 200 V, the thickness of the coated film is controlled at 0.3 μm, the process gas is Ar, and the working gas pressure is 2 Pa.

[0094] When coating the surface layer material, the substrate bias voltage is 300 V, the thickness of the coated film is controlled at 0.6 μm, the process gas is Ar, and the working gas pressure is 2.5 Pa.

[0095] S4. The pot is removed from the cavity. After the coating is completed, the cavity is cooled down, the cavity is opened and the pot is removed from the oven to obtain a non-stick pot.

[0096] Example 3

[0097] An embodiment of the present invention provides a non-stick pan, which is formed, from the outside to the inside, in the following order: a base layer, a base layer, and a surface layer; wherein the base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, the first base layer is a titanium metal layer; the second base layer is a titanium metal layer, and the first and second surface layers are both chromium-titanium-tungsten-copper-carbon (CrTiWCuC) multi-element alloy layers, wherein the chromium-titanium alloy in the alloy layer serves as a matrix alloy, and the tungsten-copper carbide alloy phase is continuously distributed in the matrix alloy as a carbide alloy phase. The multi-element alloy layer has an atomic percentage of titanium of 31%, an atomic percentage of chromium of 60%, and an atomic percentage of tungsten of 3%; an atomic percentage of copper of 3%, and an atomic percentage of carbon of 3%. The first base layer has a thickness of 1 μm, the second base layer has a thickness of 0.5 μm, the first surface layer has a thickness of 0.5 μm, and the second surface layer has a thickness of 1 μm.

[0098] The preparation process of the non-stick pan in this embodiment is different from that in Example 1 only in that:

[0099] In step S3, a first primer layer, a second primer layer, a first surface layer and a second surface layer are sequentially formed on the base material layer.

[0100] The first base material is titanium, the target material is titanium target, and when coating the base material, the substrate bias is 300V, the thickness of the plated film is controlled at 1μm, the process gas is Ar, and the working gas pressure is 1Pa.

[0101] The second base material is titanium, the target material is titanium target, the substrate bias is 200V, the thickness of the plated film is controlled at 0.5μm, the process gas is Ar, and the working gas pressure is 1Pa.

[0102] The first surface layer material is CrTiWCuC alloy film layer, the target material is titanium-chromium alloy target and carbon-copper-tungsten alloy target, the substrate bias is 300V, the plated film thickness is controlled at 0.5μm, the process gas is Ar, and the working gas pressure is 2Pa.

[0103] The second surface layer material is CrTiWCuC alloy film layer, the target material is titanium-chromium alloy target and carbon-copper-tungsten alloy target, the substrate bias is 200V, the plated film thickness is controlled at 1μm, the process gas is Ar, and the working gas pressure is 2Pa.

[0104] Example 4

[0105] An embodiment of the present invention provides a non-stick pan, which is formed, from the outside to the inside, in the following order: a base layer, a base layer, and a surface layer. The base layer is a titanium-aluminum-stainless steel three-layer composite plate, the first base layer is a titanium metal layer, and the second base layer is a titanium metal layer. The first and second surface layers are both chromium-titanium-silicon-copper-aluminum-carbon (CrTiSiCuAlC) multi-element alloy layers. The multi-element alloy layers comprise a chromium-titanium-aluminum-silicon alloy as a matrix alloy, and a carbon-aluminum-copper alloy as a carbide alloy phase continuously distributed within the matrix alloy. The atomic percentages of titanium, chromium, and silicon are 20%, 55%, and 3%, respectively; the atomic percentages of copper, aluminum, and carbon are 6%, 11%, and 5%, respectively. The first base layer is 1 μm thick, the second base layer is 0.5 μm thick, the first surface layer is 0.5 μm thick, and the second surface layer is 1 μm thick.

[0106] Compared with Example 3, the only difference in the preparation process is that the target materials for the first surface layer and the second surface layer in step S3 are both chromium-titanium-silicon alloy target materials and carbon-aluminum-copper alloy target materials, and the other preparation steps are the same. In addition, the thickness of the first base layer is 1 μm, the thickness of the second base layer is 0.5 μm, the thickness of the first surface layer is 0.5 μm, and the thickness of the second surface layer is 1 μm.

[0107] Example 5

[0108] An embodiment of the present invention provides a non-stick pan, which comprises, from the outside inward, a base layer, a base layer, and a surface layer. The base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, and both the first base layer and the second base layer are titanium metal layers. The first and second surface layers are both chromium-titanium-aluminum-copper (CrTiAlCu) multi-element alloy layers, wherein the atomic percentage of titanium, chromium, and aluminum is 25%, 55%, and 16%, respectively; and the atomic percentage of copper is 4%. The first base layer and the second base layer are 0.5 μm thick, the first surface layer is 0.3 μm thick, and the second surface layer is 1 μm thick.

[0109] Compared with Example 3, the only difference in the preparation process is that the target materials for the first surface layer and the second surface layer in step S3 are both CrTiAlCu alloy targets, and the other preparation steps are the same. In addition, the thickness of the first base layer is 0.5μm, the thickness of the second base layer is 0.5μm, the thickness of the first surface layer is 0.3μm, and the thickness of the second surface layer is 1μm.

[0110] Example 6

[0111] An embodiment of the present invention provides a non-stick pan, which is formed, from the outside to the inside, with: a base layer, a first base layer, a second base layer, a first surface layer, and a second surface layer; wherein the base layer is a stainless steel plate, and the first base layer and the second base layer are both zirconium metal layers; the first surface layer and the second surface layer are both multi-component alloy layers, and the multi-component alloy layer includes a chromium-titanium-silicon-aluminum-niobium (CrTiSiAlNb) alloy layer, wherein the atomic percentage of titanium in the multi-component alloy layer is 25%, the atomic percentage of chromium is 55%, and the atomic percentage of aluminum is 12%; the atomic percentage of niobium is 5%, and the atomic percentage of silicon is 3%, the thickness of the first base layer is 0.7μm, the thickness of the second base layer is 0.2μm, the thickness of the first surface layer is 0.5μm, and the thickness of the second surface layer is 0.7μm.

[0112] Compared with Example 2, the preparation process is different in that the embodiment of the present invention adopts a multi-arc ion plating process, and the specific steps are as follows:

[0113] S1. Install the target material. Install the target material required for pot coating in the vacuum coating chamber. The target material is an alloy target composed of Zr target and CrTiSiAlNb;

[0114] S2, vacuum wash the target. After installing the target, close the chamber door and vacuum, and the vacuum is pumped to 9×10 -3 At 1 Pa, target cleaning begins. A process gas is introduced into the chamber to bring the working pressure inside the chamber to 1 Pa, and the arc power supply is turned on to clean the target. The process gas for target cleaning is highly inert argon, the target cleaning power supply is a multi-arc power supply, the target cleaning current is 100A, and the target cleaning time is 5 minutes.

[0115] S3. Coating of pots. After the target is washed, the cavity is opened to release the gas and break the vacuum. After the pot is placed on the sample rack, the process is introduced and vacuum is started. The vacuum degree should not be less than 8×10 -3 Pa, the chamber is heated up, and the preset temperature is 220 ° C. When the substrate reaches the preset temperature and vacuum degree of the process, a certain amount of process gas is introduced to start coating. The specific coating process flow is as follows: first, plasma cleaning or plasma etching is performed, and then the first base layer, the second base layer, the first surface layer and the second surface layer are plated in sequence.

[0116] The plasma cleaning bias voltage is 600 V, the process gas is Ar, the working gas pressure is 1 Pa, and the plasma cleaning time is 15 minutes.

[0117] The first base layer material is Zr. When the base layer material is plated, the substrate bias is 300V, the thickness of the plated film is controlled at 0.7μm, the process gas is Ar, and the working gas pressure is 1Pa.

[0118] The second base material is Zr, the substrate bias is 200 V, the thickness of the plated film is controlled at 0.2 μm, the process gas is Ar, and the working gas pressure is 1 Pa.

[0119] The first surface layer is a CrTiSiAlNb alloy film layer, the substrate bias voltage is 200V, the plated film thickness is controlled at 0.5μm, the process gas is Ar, and the working gas pressure is 2Pa.

[0120] The second surface layer is a carbonitride of CrTiSiAlNb alloy. When coating the surface layer material, the substrate bias is 200V, the thickness of the plated film is controlled at 0.7μm, the process gas is Ar, N2, C2H2, and the working gas pressure is 2Pa.

[0121] S4. The pot is taken out of the cavity. After the coating is completed, the cavity is cooled down, the cavity is opened and the product is taken out of the oven.

[0122] The base layer target material is a chromium target material, and the surface layer target material is a CrTiSiAlNb alloy target material. The other preparation steps are the same. In addition, the base layer thickness is 3 μm and the surface layer thickness is 3 μm.

[0123] Example 7

[0124] An embodiment of the present invention provides a non-stick pan, which is formed from the outside to the inside with: a base layer, a base layer, and a surface layer; wherein the base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, and the base layer is a chromium metal layer; the surface layer is a multi-element alloy layer, which includes a chromium-titanium-silicon-aluminum-niobium (CrTiSiCuZn) alloy layer, wherein the atomic percentage of titanium in the multi-element alloy layer is 30%, the atomic percentage of chromium is 55%, and the atomic percentage of copper is 10%; the atomic percentage of zinc is 3%, and the atomic percentage of silicon is 2%. The base layer has a thickness of 1.5 μm, and the surface layer has a thickness of 1.5 μm.

[0125] Compared with Example 2, the preparation process is different only in that S1, the base layer target is a chromium target, and the surface layer target is a CrTiSiCuZn alloy target. The other preparation steps are the same. In addition, the base layer thickness is 1.5 μm and the surface layer thickness is 1.5 μm.

[0126] Example 8

[0127] An embodiment of the present invention provides a non-stick pan, which is formed from the outside to the inside with: a base layer, a base layer, and a surface layer; wherein the base layer is a stainless steel-aluminum-stainless steel three-layer composite plate, and the base layer is a chromium metal layer; the surface layer is a multi-element alloy layer, and the multi-element alloy layer includes a chromium-titanium-silicon-aluminum-niobium (CrTiSiAlN) alloy layer, wherein the atomic percentage of titanium in the multi-element alloy layer is 20%, the atomic percentage of chromium is 55%, the atomic percentage of silicon is 2%, and the atomic percentage of aluminum is 20%; the atomic percentage of nitrogen is 3%, the thickness of the base layer is 0.3μm, and the thickness of the surface layer is 0.5μm.

[0128] Compared with Example 2, the preparation process is different only in that the base layer target is a chromium target and the surface layer target is a CrTiSiAlN alloy target. The other preparation steps are the same. In addition, the base layer thickness is 1.5 μm and the surface layer thickness is 1.5 μm.

[0129] Comparative Example 1

[0130] Compared with Example 2, the difference is that the surface layer is a titanium-chromium binary alloy layer, and the atomic percentage of titanium element in the titanium-chromium binary alloy layer is 60% and the atomic percentage of chromium is 40%.

[0131] Comparative Example 2

[0132] Compared with Example 3, the difference is that the first surface layer and the second surface layer are both chromium-titanium-tungsten-copper alloy layers, and the atomic percentage of titanium element in the chromium-titanium-tungsten-copper alloy layer is 31%, the atomic percentage of chromium element is 60%, and the atomic percentage of tungsten element is 3%; the atomic percentage of copper element is 6%.

[0133] Comparative Example 3

[0134] Compared with Example 6, the difference is that the first surface layer and the second surface layer are both multi-component alloy layers, and the multi-component alloy layer includes a chromium-titanium-silicon-aluminum-niobium (CrTiSiAlNb) alloy layer, wherein the atomic percentage of titanium element in the multi-component alloy layer is 55%, the atomic percentage of chromium element is 30%, and the atomic percentage of aluminum element is 7%; the atomic percentage of niobium element is 5%, and the atomic percentage of silicon element is 3%.

[0135] Comparative Example 4

[0136] Compared with Example 3, the difference is that during the preparation of the first surface layer material and the second surface layer material, different target materials are selected, and the target material is a chromium-titanium-tungsten-copper-carbon (CrTiWCuC) alloy target.

[0137] Test Case

[0138] Furthermore, the present invention also provides a method for testing the non-stick properties and flat wear resistance of the non-stick pans prepared in Examples 1 to 8 and Comparative Examples 1 to 3. The specific testing methods are as follows:

[0139] 1. The specific test method for non-stick properties shall refer to the provisions of 4.2.1 of GB / T 32095.2-2015 "Performance and Test Specification for Non-stick Surfaces of Metal Cooking Utensils for Household Food".

[0140] The non-stick test method includes the following steps:

[0141] A: Pour an appropriate amount of vegetable oil on the surface of the substrate and wipe the non-stick surface with a soft cloth until it is evenly coated;

[0142] B: Wash with warm water above 60℃ and neutral detergent, then rinse with clean water and wipe dry;

[0143] C: Place the cooking appliance on an electric stove with a rated voltage of 220V and an output power of 1kW to heat it. Use a surface thermometer with an accuracy of not less than 2.5 to measure. When the surface temperature of the inner coating reaches 150℃-170℃, crack a fresh egg that meets the requirements of SB / T10277-1997, Grade 2 (weighing 50g-60g), and place it into the cooking appliance. Wait until the egg white is basically coagulated (during the entire cooking process, the surface temperature of the inner coating shall not exceed 210℃).

[0144] D: Use a plastic spatula with a 0.2mm-0.5mm edge thickness to remove the egg completely. If there is any egg residue attached, gently wipe it off with a wet sponge or gauze.

[0145] Test 1: Set up three experimental groups, repeat steps C and D, observe, and judge the non-stick effect according to Table 1.

[0146] Test 2: For the non-stick pans in each example, three experimental groups were set up, with 50 non-stick pans in each experimental group. Steps C and D were repeated to measure the number of eggs that could be fried continuously in the non-stick pan without oil, and the average number of eggs fried was calculated.

[0147] 2. The test method for flat surface wear resistance shall comply with 4.3.1 Flat surface wear resistance test in GB / T 32095.2-2015 "Performance and Test Specifications for Non-stick Surfaces of Metal Cooking Utensils for Household Food".

[0148] The grade judgment criteria are shown in Table 1.

[0149] 3. Perform a hardness test using the Vickers indentation method / Vickers microscopy method to determine the hardness test data and observe whether the film breaks or falls off. The test results are shown in Table 2.

[0150] Table 1 Fried egg non-stick test results and plane wear test structure evaluation

[0151] Table 2 Non-stick test results of Examples and Comparative Examples

[0152] It can be seen from Tables 1 to 2 that the non-stick grades of the non-stick pans prepared in Examples 1 to 8 of the present invention can all reach Grade I, while in Comparative Examples 1 and 3, after the atomic percentage of the Group IVB elements in the surface layer is adjusted to be higher than the atomic percentage of the Group VIB elements, the viscosity grade is significantly reduced.

[0153] In Example 2 of the present invention, a first base layer, a second base layer, a transition layer and a surface layer are provided. The first base layer serves as the base layer, and the material selected is a pure chromium layer. The second base layer serves as the transition layer of the base layer, and the material selected is a chromium nitride layer. The transition layer serves as the transition layer of the surface layer, and the materials selected are chromium nitride, titanium nitride and aluminum nitride. The surface layer material is a chromium-titanium-aluminum-copper-nitrogen multi-element alloy. The above-mentioned specific types of base layers, transition layers and surface layers can form a good metallurgical bond, so that the friction has the best and most suitable hardness and wear resistance. The surface layer material selects the above-mentioned specific proportion, that is, the atomic percentage of titanium is 25%, the atomic percentage of chromium is 40%, the atomic percentage of aluminum is 15%, the atomic percentage of copper is 5%, and the atomic percentage of nitrogen is 15%. The surface layer multi-element alloy layer determined under this specific content has particularly excellent non-stickiness.

[0154] In Examples 3 and 4 of the present invention, carbon is added to the multinary alloy layer of the surface layer, and by setting the target material as a titanium-chromium alloy target material of the matrix component and a carbon-copper-tungsten alloy target material of the carbide alloy, a PVD sputtering process is performed, and the non-stick grade of the prepared non-stick pan can reach Class I, and the wear resistance grade can also reach Class I. In Comparative Example 2, after the carbon element is removed, the carbide alloy component cannot be formed in the multinary alloy layer, resulting in the wear resistance grade of the non-stick pan being reduced to Class II. In Comparative Example 4, although carbon is added, the target material is selected as a chromium-titanium-tungsten-copper-carbon (CrTiWCuC) alloy target material. At this time, the wear resistance grade of the surface layer prepared by the sputtering process is also reduced to Class II. The reason for this may be that when the chromium-titanium-tungsten-copper-carbon (CrTiWCuC) alloy target material is used, the tungsten-copper carbide alloy phase cannot be formed in the multinary alloy layer formed and continuously distributed in the matrix alloy, resulting in a decrease in wear resistance.

[0155] The non-stick grade of the non-stick cookware prepared in Examples 6 to 8 of the present invention can all reach Level I, and the wear resistance grade can also reach Level I. The reason for this may be that the atoms in the crystal interface of the formed multi-element alloy layer are arranged in an orderly manner, forming a eutectic compound crystal, thereby increasing the hardness of the surface layer and reducing the surface energy of the surface layer, thereby greatly improving its wear resistance and non-stick performance.

[0156] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A non-stick pan, characterized in that: From the outside to the inside, there are formed: a base material layer, at least one base layer, and at least one surface layer; The bottom layer is a transition metal layer; The surface layer is a multi-component alloy layer, and the multi-component alloy layer includes at least a transition metal multi-component alloy layer; the transition metal in the transition metal multi-component alloy layer includes at least one transition metal element in Group IVB and at least one transition metal element in Group VIB, and the atomic weight content of the transition metal element in Group IVB is lower than the atomic weight content of the transition metal element in Group VIB.

2. The non-stick pan according to claim 1, characterized in that The transition metal element in Group IVB includes at least one of titanium and zirconium; and / or, The transition metal element in Group VIB includes at least one of chromium, molybdenum and tungsten; and / or In the multi-element alloy layer, the atomic percentage of the IVB group transition metal element is 20-45%, and the atomic percentage of the VIB group transition metal element is 55-80%.

3. The non-stick pan according to claim 1 or 2, characterized in that: The multi-element alloy layer further comprises any one or more of Group IB transition metal elements, Group IIB transition metal elements, Group VB transition metal elements and carbon elements; and / or, In the multi-element alloy layer, the atomic percentage of the transition metal element of group IB is 0-15%; the atomic percentage of the transition metal element of group IIB is 0-15%; the atomic percentage of the transition metal element of group VB is 0-10%; and the atomic percentage of the carbon element is 0-15%.

4. The non-stick pan according to claim 3, characterized in that The transition metal elements in Group IB include at least one or more of copper and silver; and / or, The transition metal element in Group IIB includes zinc; and / or The transition metal elements in Group VB include Nb.

5. The non-stick pan according to any one of claims 1 to 4, characterized in that: The multi-element alloy layer further includes at least one or more of aluminum, silicon and nitrogen; and / or, The aluminum element accounts for 0 to 25% of the total atomic percentage of the multi-element alloy layer; and / or, The silicon element accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer; and / or, The nitrogen element accounts for 0 to 15% of the total atomic percentage of the multi-element alloy layer.

6. The non-stick pan according to claim 1, characterized in that The substrate layer includes a stainless steel layer, a stainless steel composite layer, a titanium layer or a titanium composite layer; and / or, The thickness of the primer layer is 0.1 μm to 3 μm; The thickness of the surface layer is 0.1 μm to 5 μm.

7. The non-stick pan according to claim 1, characterized in that From the outside to the inside, the following are formed in sequence: a base material layer, a first base layer, a second base layer, a first surface layer and a second surface layer; The thickness of the first primer layer is 0.5 to 3 μm, the thickness of the second primer layer is 0.1 to 3 μm, the thickness of the first surface layer is 0.1 to 3 μm, and the thickness of the second surface layer is 0.3 to 5 μm.

8. The non-stick pan according to claim 1, characterized in that From the outside to the inside, the following are formed in sequence: a base material layer, a first base layer, a second base layer, a first surface layer and a second surface layer; The first primer layer comprises a pure chromium layer or a pure titanium layer; the second primer layer comprises chromium nitride or titanium nitride; The first surface layer is a transition layer, and the transition layer includes chromium nitride, titanium nitride, and aluminum nitride alloy elements; The second surface layer includes a multi-element alloy layer of chromium, titanium, aluminum, copper and nitrogen. In the multi-element alloy layer of the second surface layer, the atomic percentage of chromium is 40-58%, the atomic percentage of titanium is 20-38%, the atomic percentage of aluminum is 0-15%, the atomic percentage of copper is 2-7%, and the atomic percentage of nitrogen is 3-15%. The sum of the atomic percentages of each element is 100%.

9. A process for preparing a non-stick pan, applied to the non-stick pan according to any one of claims 1 to 8, characterized in that: The steps include: Substrate layer pretreatment; forming at least one primer layer on the inner surface of the substrate layer, wherein the primer layer is a titanium metal layer and / or a chromium metal layer; At least one surface layer is formed on the side of the base layer away from the substrate layer, and the surface layer is a multi-component alloy layer, and the multi-component alloy layer at least includes a transition metal multi-component alloy layer, and the transition metal in the transition metal multi-component alloy layer includes at least one transition metal element in Group IVB and at least one transition metal element in Group VIB, and the atomic weight content of the transition metal element in Group IVB is lower than the atomic weight content of the transition metal element in Group VIB.

10. The process for preparing a non-stick pan according to claim 9, characterized in that: The base layer is prepared by a magnetron sputtering process or a multi-arc ion plating process, and the target material includes titanium, titanium alloy, chromium or chromium alloy; and / or, The surface layer is prepared by a magnetron sputtering process or a multi-arc ion plating process, and the target material includes at least one metal or alloy of titanium and zirconium in the IVB group, and at least one metal or alloy of chromium, molybdenum, and tungsten in the VIB group.

11. The process for preparing a non-stick pan according to claim 10, characterized in that: The magnetron sputtering process conditions are as follows: substrate bias voltage is 30-800 V, process gas is one or a mixture of Ar, N2, C2H2, and working gas pressure is 0.2-4 Pa; or, The multi-arc ion plating process conditions are as follows: substrate bias voltage is 30-800V, process gas is one or a mixture of Ar, N2, C2H2, and working gas pressure is 0.2-4Pa.

Images