A multilayer metal coating logo and a method for manufacturing the same

Abstract

The application relates to the field of coating technology, and particularly discloses a multilayer metal coating logo and a preparation method thereof. The multilayer metal coating logo comprises a non-metal substrate, a wear-resistant coating, a first metal layer and a second metal layer, the first metal layer comprises a Ti layer, a W layer, a Zr layer and a Cr layer, the second metal layer comprises a Ti layer and a Cu layer, the non-metal substrate is a glass ceramic substrate, and the wear-resistant coating is a ceramic and lubricating phase composite coating. The preparation method comprises the following steps: firstly, depositing metal layers on the surface of the glass ceramic substrate in sequence; secondly, forming a logo pattern by silk printing ink, and then removing the multilayer metal coating and the ink which are not covered by the ink pattern in sequence; and thirdly, spraying the ceramic and lubricating phase composite coating on the surface of the substrate material to obtain the multilayer metal coating logo. The multilayer metal coating logo can be used in electronic devices and has the advantages of good wear resistance. In addition, the preparation method has the advantage of easy operation.

Description

Technical Field

[0001] This application relates to the field of coating technology, and more specifically, to a multilayer metal coating logo and its preparation method. Background Technology

[0002] Logos play a very important role. In media promotion and advertising, logos can be used to establish the brand of a company's products. People can usually tell which company makes the product through the logo, giving them a sense of security and credibility. It also allows for quick identification of product quality in the market. Logos are generally very distinctive and have a strong visual impact, making them easier for people to recognize and understand. Many big brands use their logos very well.

[0003] Currently, the process for forming the logo of electronic equipment products is as follows: First, aluminum sheets with a metallic luster are used to form a blank through an extrusion molding process. Then, the extruded blank is subjected to processes such as sandblasting, oxidation, polishing, and secondary oxidation to finally obtain a logo with a visual effect.

[0004] Most electronic devices use metal coatings as logos, but these coatings are prone to wear and tear during use, which can affect the overall appearance of the device. Summary of the Invention

[0005] To improve the wear resistance of the logo metal coating, this application provides a multi-layer metal coating logo and its preparation method.

[0006] Firstly, this application provides a multi-layered metallic coating logo, employing the following technical solution:

[0007] A multi-layer metal-coated logo includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer. The second metal layer includes a Ti layer and a Cu layer. The non-metallic substrate is a glass-ceramic substrate, and the wear-resistant coating is a composite coating of ceramic and lubricating phase.

[0008] By adopting the above technical solution, due to the use of Ti, W, Zr and Cr layers, the inner Ti layer can significantly enhance the adhesion performance with the substrate, and the various metal layers are more tightly bonded by the ionic bonds between the metals. Different metal layers have different metallic luster and metallic color, so that the coating of different colored logos can achieve the target color by adjusting the different thicknesses of each layer.

[0009] The coating uses a Ti layer and a Cu layer. The Cu layer is a film formed of metallic copper. The color of the film is adjusted by the a value in the Lab value of the copper material. A positive a value results in a reddish color, and a negative a value results in a greenish color. The coating has good adhesion to the logo, stable hardness and stress chemical properties, and is less affected by the environment. Reliability tests have confirmed that the product has significant improvements in strength, aging resistance and corrosion resistance, thus extending the lifespan of the logo.

[0010] When using non-metallic substrates as glass-ceramic substrates, and tailings and slag glass-ceramics as conveying pipes and pipelines in the chemical and metallurgical fields, corrosion resistance is a key factor determining their performance and service life. Therefore, improving the corrosion resistance of glass-ceramics requires clarifying their corrosion mechanisms, thereby enhancing the corrosion resistance of the logo, making the bond between the substrate and the coating more stable, and improving the logo's wear resistance.

[0011] Plasma spraying technology is used to apply a wear-resistant coating that is a composite coating of ceramic and lubricating phases, thereby improving the corrosion resistance, wear resistance, and high-temperature resistance of the material. Plasma spraying technology can effectively improve the wear resistance of mechanical parts and extend their service life without altering the microstructure of the base material. The working gas in plasma spraying is typically argon or nitrogen, with a small amount of hydrogen. These gases are heated and dissociated by an electric arc during operation, forming ultra-high-temperature plasma gas, reaching temperatures as high as 14,000°C. This plasma gas is then compressed into a plasma jet and accelerated outwards. The coating material is rapidly melted into small droplets by the high-temperature plasma gas and sprayed at high speed onto the base material, where it diffuses and spreads to form a dense coating layer, thus improving the wear resistance of the metal coating.

[0012] Preferably, the ceramic-lubricating phase composite coating is a nanostructured TiO2-CNT coating prepared by plasma spraying.

[0013] By adopting the above technical solutions, plasma spraying technology is widely used in the preparation of wear-resistant coatings, mainly because it has advantages such as ultra-high temperature characteristics, good coating tightness, good oxidation resistance and strong controllability. CNT has the effect of fine grain strengthening and has good wettability with TiO2 interface, which can absorb external heat and reduce internal stress. The bridging phenomenon of CNT improves the cohesive strength of the coating and inhibits the initiation and propagation of cracks. The reason why the ceramic coating with added CNT is less prone to crack propagation and has less surface damage is that the internal bridging connection phenomenon improves the fracture toughness.

[0014] Preferably, the glass-ceramic substrate comprises the following raw materials in parts by weight: 12-18 parts of Baotou Steel blast furnace slag, 21-26 parts of quartz sand, 8-12 parts of alumina, 3-8 parts of magnesium oxide, 2-10 parts of anhydrous sodium carbonate, 1-3 parts of chromium oxide, and 5-15 parts of cerium oxide.

[0015] By adopting the above technical solution, the addition of blast furnace slag alters the structure of the glass network. For glass preparation, the phase transition that occurs during the preparation process is a typical process controlled by long-range diffusion. In this process, any factor affecting particle (atom, ion) migration plays an important role in glass nucleation and crystallization, and the potential barrier for particle diffusion is closely related to the connectivity of the glass matrix. With the increase of blast furnace slag content, the content of alkali metal and alkaline earth metal ions, as well as symbiotic rare earth Ce4+ and Ti4+ ions, which act as network modifiers, also increases, resulting in greater stability of the glass ceramic.

[0016] Preferably, the glass-ceramic substrate is prepared by the following steps:

[0017] (1) The above raw materials are batched, mixed, melted, clarified and homogenized to obtain a mixture;

[0018] (2) Then pour the mixture into a mold;

[0019] (3) The mixture is annealed, nucleated and crystallized to finally obtain a blast furnace slag glass ceramic substrate.

[0020] By adopting the above technical solution, the glass-ceramic process is divided into two parts: preparing the base glass and heat-treating the glass samples. First, the composition range of the base glass is determined based on the composition of the blast furnace slag. Next, the raw materials are batched, mixed, melted, and cast. A small portion of the water-quenched glass samples are taken, and the optimal heat treatment regime is determined through thermodynamic analysis. The remaining samples are annealed and then subjected to nucleation and crystallization treatment according to the determined heat treatment regime, ultimately obtaining pyroxene-based blast furnace slag glass-ceramics containing symbiotic rare earth cerium elements. By incorporating different mass fractions of CeO2 into the raw materials, and preparing CeO2-containing blast furnace slag glass-ceramics after high-temperature melting, annealing, and heat treatment, since glass-ceramics are composite materials of crystalline and glassy phases, and the type and degree of crystallinity of the crystalline phase have a significant impact on their corrosion characteristics, the heat treatment regime directly determines the crystal characteristics of the glass-ceramic, achieving better corrosion resistance.

[0021] Preferably, the thickness of the first metal layer is 12-35 nm, and the thickness of the second metal layer is 25-38 nm.

[0022] By adopting the above technical solution, the titanium film significantly enhances the adhesion performance of the titanium material to the substrate, while also exhibiting good bonding with other metals, thus improving the adhesion of the film. Tungsten, a non-ferrous metal and an important strategic metal, possesses extremely high strength and hardness. Due to these characteristics, it exhibits high hardness and strong wear resistance. Zirconium readily forms an oxide film on its surface, giving it a glossy appearance similar to steel. It is corrosion-resistant, soluble in hydrofluoric acid and aqua regia, and at high temperatures, it can react with non-metallic elements and many metallic elements to form solid solutions. The thinner the metal layer and the more metal layers, the better the layering and the more aesthetically pleasing the metal coating.

[0023] Preferably, the thickness of the glass-ceramic substrate is 0.1 to 1.5 mm.

[0024] By adopting the above technical solutions, the glass-ceramic substrate has good thermal stability. The microstructure of glass ceramics has a great influence on its mechanical properties. The performance can be improved by controlling the structure. For example, the interwoven structure can improve strength and toughness. Composite materials are another effective way to improve the mechanical properties of glass ceramics. Fibers, whiskers or microparticles with different mechanical properties from the glass ceramic matrix can be combined with it, or other materials such as metals can be combined with it.

[0025] Preferably, the wear-resistant coating has a thickness of 5-20 nm.

[0026] By adopting the above technical solutions, adding a hard phase to a multiphase composite coating can reduce wear by increasing the coating hardness, while adding TiO2 can improve the coating toughness and reduce the friction coefficient. Although adding a single lubricating phase can reduce wear, it is limited by the temperature range. Adding CNTs can not only ensure lubrication effect in all temperature ranges, but also exhibit synergistic lubrication effect, improving the coating wear condition; the toughening effect of the lubricating phase inhibits the initiation and propagation of cracks through internal bridging.

[0027] Secondly, this application provides a method for preparing a multi-layer metal coating logo, employing the following technical solution:

[0028] A method for preparing a multi-layered metal-coated logo includes the following steps:

[0029] S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass ceramic substrate;

[0030] S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence;

[0031] S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.

[0032] By adopting the above technical solutions, the cleanliness of the substrate can be ensured through pretreatment, and the adhesion of the multi-layer metal coating logo can be improved. The composite coating of ceramic and lubricating phase is applied using plasma spraying technology, which allows the coating surface to better protect the metal coating, thereby improving wear resistance. The coating uses a combination of multiple metals to achieve the coating of logos in different colors. By adjusting the different thicknesses of each layer, the target color can be achieved, so that the appearance can meet the customer's personalized requirements for logos on glass substrates and other surfaces.

[0033] In summary, this application has the following beneficial effects:

[0034] 1. Because this application uses Ti, W, Zr and Cr layers, the inner Ti layer can significantly enhance the adhesion performance with the substrate. The various metal layers are more tightly bonded by the ionic bonds between the metals. Different metal layers have different metallic luster and metallic color, so that the coating of different colored logos can achieve the target color by adjusting the different thicknesses of each layer.

[0035] 2. In this application, glass-ceramic substrates are preferred because they have good thermal stability. The microstructure of glass-ceramics has a great influence on their mechanical properties. The performance can be improved by controlling the structure. For example, interwoven structures can improve strength and toughness. Composite materials are another effective way to improve the mechanical properties of glass-ceramics. Fibers, whiskers or microparticles with mechanical properties different from those of the glass-ceramic matrix can be combined with it, or other materials such as metals can be combined with it.

[0036] 3. The method of this application, by pre-treating the substrate, can ensure the cleanliness of the substrate and improve the adhesion of the multi-layer metal coating logo. The composite coating of ceramic and lubricating phase is applied using plasma spraying technology, which allows the coating surface to better protect the metal coating, thereby improving wear resistance. The coating uses a combination of multiple metals to achieve the coating of logos of different colors. By adjusting the different thicknesses of each layer, the target color can be achieved, so that the appearance can meet the customer's personalized requirements for logos on glass substrates and other surfaces. Detailed Implementation

[0037] The following detailed description of this application is provided in conjunction with the embodiments. It should be noted that: unless otherwise specified, the conditions in the following embodiments are performed under conventional conditions or conditions recommended by the manufacturer. Unless otherwise specified, the raw materials used in the following embodiments are all from commercially available sources.

[0038] The blast furnace slag of Baogang is the No. 7 blast furnace slag of Baogang.

[0039] Preparation examples of raw materials and / or intermediates

[0040] Preparation Example 1

[0041] A glass-ceramic substrate includes the following preparation steps:

[0042] (1) 12kg of Baotou Steel blast furnace slag, 21kg of quartz sand, 8kg of alumina, 3kg of magnesium oxide, 2kg of anhydrous sodium carbonate, 1kg of chromium oxide and 5kg of cerium oxide are batched, mixed, melted, clarified and homogenized to obtain a mixture.

[0043] (2) Then pour the mixture into a mold;

[0044] (3) The mixture is annealed, nucleated and crystallized to finally obtain blast furnace slag glass ceramic.

[0045] Preparation Example 2

[0046] A glass-ceramic substrate includes the following preparation steps:

[0047] (1) The raw materials 15kg of Baotou Steel blast furnace slag, 24kg of quartz sand, 10kg of alumina, 5kg of magnesium oxide, 5kg of anhydrous sodium carbonate, 2kg of chromium oxide and 10kg of cerium oxide are batched, mixed, melted, clarified and homogenized to obtain a mixture.

[0048] (2) After the raw material is melted at 1450℃ and kept at that temperature for 5 hours, a portion of it is poured into a preheated mold for casting.

[0049] (3) The formed glass is placed in a preheated muffle furnace for annealing (600°C), kept at the temperature for 3 hours and then cooled to room temperature with the furnace. After being taken out, it undergoes nucleation and crystallization treatments to finally obtain blast furnace slag glass ceramics.

[0050] Preparation Example 3

[0051] A glass-ceramic substrate includes the following preparation steps:

[0052] (1) The raw materials 18kg of Baotou Steel blast furnace slag, 26kg of quartz sand, 12kg of alumina, 8kg of magnesium oxide, 10kg of anhydrous sodium carbonate, 3kg of chromium oxide and 15kg of cerium oxide are batched, mixed, melted, clarified and homogenized to obtain a mixture.

[0053] (2) After the raw material is melted at 1450℃ and kept at that temperature for 5 hours, a portion of it is poured into a preheated mold for casting.

[0054] (3) The formed glass is placed in a preheated muffle furnace for annealing (600°C), kept at the temperature for 3 hours and then cooled to room temperature with the furnace. After being taken out, it undergoes nucleation and crystallization treatments to finally obtain blast furnace slag glass ceramics.

[0055] Comparative Preparation Example 1

[0056] A glass-ceramic substrate includes the following preparation steps:

[0057] (1) The raw materials 26kg of quartz sand, 12kg of alumina, 8kg of magnesium oxide, 10kg of anhydrous sodium carbonate, 3kg of chromium oxide and 15kg of cerium oxide are batched, mixed, melted, clarified and homogenized to obtain a mixture;

[0058] (2) After the raw material is melted at 1450℃ and kept at that temperature for 5 hours, a portion of it is poured into a preheated mold for casting.

[0059] (3) The formed glass is placed in a preheated muffle furnace for annealing (600°C), kept at the temperature for 3 hours and then cooled to room temperature with the furnace. After being taken out, it undergoes nucleation and crystallization treatments to finally obtain blast furnace slag glass ceramics.

[0060] Example

[0061] Example 1

[0062] A multilayer metal-coated logo includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer, with a thickness of 12 nm. The second metal layer includes a Ti layer and a Cu layer, with a thickness of 25 nm. The non-metallic substrate is a glass-ceramic substrate prepared in Preparation Example 2, with a thickness of 0.1 mm. The wear-resistant coating is a composite coating of ceramic and lubricating phases, with a thickness of 5 nm. The composite coating of ceramic and lubricating phases is a nanostructured TiO2-CNT coating prepared by plasma spraying.

[0063] A method for preparing a multi-layer metal coating logo includes the following steps:

[0064] S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass-ceramic substrate prepared in Example 2;

[0065] S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence;

[0066] S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.

[0067] Example 2

[0068] A multilayer metal-coated logo includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer, with a thickness of 25 nm. The second metal layer includes a Ti layer and a Cu layer, with a thickness of 31 nm. The non-metallic substrate is a glass-ceramic substrate prepared in Preparation Example 2, with a thickness of 0.8 mm. The wear-resistant coating is a composite coating of ceramic and lubricating phases, with a thickness of 15 nm. The composite coating of ceramic and lubricating phases is a nanostructured TiO2-CNT coating prepared by plasma spraying.

[0069] A method for preparing a multi-layer metal coating logo includes the following steps:

[0070] S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass-ceramic substrate prepared in Example 2.

[0071] S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence;

[0072] S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.

[0073] Example 3

[0074] A multilayer metal-coated logo includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer, with a thickness of 12-35 nm. The second metal layer includes a Ti layer and a Cu layer, with a thickness of 38 nm. The non-metallic substrate is a glass-ceramic substrate prepared in Preparation Example 2, with a thickness of 1.5 mm. The wear-resistant coating is a composite coating of ceramic and lubricating phases, with a thickness of 20 nm. The composite coating of ceramic and lubricating phases is a nanostructured TiO2-CNT coating prepared by plasma spraying.

[0075] A method for preparing a multi-layer metal coating logo includes the following steps:

[0076] S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass-ceramic substrate prepared in Example 2.

[0077] S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence;

[0078] S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.

[0079] Example 4

[0080] A multilayer metal-coated logo includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer, with a thickness of 12-35 nm. The second metal layer includes a Ti layer and a Cu layer, with a thickness of 38 nm. The non-metallic substrate is a glass-ceramic substrate prepared in Comparative Preparation Example 1, with a thickness of 1.5 mm. The wear-resistant coating is a composite coating of ceramic and lubricating phases, with a thickness of 20 nm. The composite coating of ceramic and lubricating phases is a nanostructured TiO2-CNT coating prepared by plasma spraying.

[0081] A method for preparing a multi-layer metal coating logo includes the following steps:

[0082] S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass-ceramic substrate prepared in Comparative Preparation Example 1.

[0083] S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence;

[0084] S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.

[0085] Comparative Example

[0086] Comparative Example 1

[0087] A multi-layer metal coating logo, which differs from Example 1 in that no first metal layer is added to the metal coating.

[0088] Comparative Example 2

[0089] A multi-layer metal coating logo differs from Example 1 in that only a first metal layer exists in the metal coating.

[0090] Comparative Example 3

[0091] A multi-layer metal-coated logo, which differs from Example 1 in that the metal coating does not include a non-metallic substrate.

[0092] Comparative Example 4

[0093] A multi-layer metal-coated logo differs from Example 1 in that the non-metallic base glass-ceramic substrate in the metal coating is replaced with a glass substrate.

[0094] Comparative Example 5

[0095] A multi-layer metal-coated logo differs from Example 1 in that the non-metallic base glass-ceramic substrate in the metal coating is replaced with a glass substrate.

[0096] Comparative Example 6

[0097] A multi-layer metal-coated logo, which differs from Example 1 in that the metal coating does not include a wear-resistant coating.

[0098] Comparative Example 7

[0099] A multi-layer metal coating logo differs from Example 1 in that the wear-resistant ceramic and lubricating phase composite coating nanostructure TiO2-CNT coating in the metal coating is replaced with a NiCrBSi coating.

[0100] Comparative Example 8

[0101] A multi-layer metal-coated logo differs from Example 1 in that the composite coating of the grinding ceramic and the lubricating phase in the metal coating is applied by vapor deposition technology.

[0102] Performance testing

[0103] The hardness and wear resistance of the multilayer metal coating logos obtained in Examples 1-4 and Comparative Examples 1-8 were tested.

[0104] The hardness test method was as follows: An HVS-1000 Vickers hardness tester was used to measure the microhardness distribution, with a normal load of 300g and a loading time of 15s. Measurements were taken at 100μm intervals along the laser cladding interface from the surface to the substrate. To ensure data accuracy, three measurements were taken at the same depth, and the average value was taken as the microhardness value of the cladding layer at that depth. The measured Vickers hardness values ​​are shown in Table 1 below.

[0105] The wear resistance testing method was as follows: An MRH-3W high-speed ring-block friction and wear testing machine was used. The wear resistance of the cladding layer was tested according to GB / T12444-2006 "Metallic Materials Wear Test Methods - Test Ring-Block Sliding Wear Test". The test parameters were: applied load 150N, grinding time 60min, and rotation speed 200r / min. The test sample size was 19 × 12 × 12mm³. GCr15 steel with a Rockwell hardness of 62.5HRC was selected for the grinding pair. Before testing, the sample surface was machined to ensure similar surface finish. The samples were cleaned and dried before and after testing. The weight loss was then calculated using an analytical balance (weight loss = weight before wear - weight after wear). The accuracy of the analytical balance was 0.0001g. The measurement results are shown in Table 1 below.

[0106] Detection methods / test methods

[0107] project Hardness / Hv Wear loss (mg) Example 1 899 3.6 Example 2 885 4.1 Example 3 879 4.5 Example 4 764 8.1 Comparative Example 1 732 6.8 Comparative Example 2 729 7.2 Comparative Example 3 718 7.7 Comparative Example 4 736 6.9 Comparative Example 5 723 6.7 Comparative Example 6 701 9.8 Comparative Example 7 741 8.3 Comparative Example 8 756 7.5

[0108] Combining Examples 1-4 and Comparative Examples 1-8 with Table 1, it can be seen that the multilayer metal coating in Example 1 has relatively high hardness and low wear weight loss, indicating that the use of Ti and Cu layers (Cu layer refers to a film layer formed by metallic copper) results in good coating adhesion, stable hardness and stress chemical properties, and minimal environmental influence. Furthermore, reliability testing has confirmed that the product's strength, aging resistance, and corrosion resistance are significantly improved. The wear-resistant coating applied using plasma spraying technology is a composite coating of ceramic and lubricating phases, which improves the material's corrosion resistance, wear resistance, and high-temperature resistance.

[0109] As can be seen from Example 4 and Table 1, the absence of blast furnace slag from Baotou Steel in the glass-ceramic substrate reduces the hardness of the glass-ceramic and results in insufficient bonding between the glass-ceramic substrate and the metal coating, thus reducing wear resistance.

[0110] Based on Comparative Examples 1-2 and Table 1, it can be seen that the metal coating includes a first metal layer and a second metal layer. The entire metal coating has better hardness and better wear resistance.

[0111] Based on Comparative Examples 3-5 and Table 1, it can be seen that non-metallic glass-ceramic substrates have better hardness and wear resistance compared to metal coatings.

[0112] As can be seen from Comparative Examples 6-8 and Table 1, the metal coating applied by plasma spraying technology with the composite coating of wear-resistant ceramic and lubricating phase forms a protective film on the metal coating, making the chemical properties more stable and the wear resistance stronger.

[0113] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A multi-layered metallic coating logo, characterized in that, It includes a non-metallic substrate, a wear-resistant coating, a first metal layer, and a second metal layer. The first metal layer includes a Ti layer, a W layer, a Zr layer, and a Cr layer. The second metal layer includes a Ti layer and a Cu layer. The non-metallic substrate is a glass-ceramic substrate, and a first metal layer and a second metal layer are sequentially deposited on the surface of the glass-ceramic substrate, and then a wear-resistant coating is sprayed on. The wear-resistant coating is a composite coating of ceramic and lubricating phase, and the composite coating of ceramic and lubricating phase is a nanostructured TiO2-CNT coating prepared by plasma spraying; The glass-ceramic substrate is made from the following raw materials in parts by weight: 12-18 parts Baotou Steel blast furnace slag, 21-26 parts quartz sand, 8-12 parts alumina, 3-8 parts magnesium oxide, 2-10 parts anhydrous sodium carbonate, 1-3 parts chromium oxide and 5-15 parts cerium oxide. The thickness of the first metal layer is 12-35 nm, and the thickness of the second metal layer is 25-38 nm.

2. The multi-layer metal coating logo according to claim 1, characterized in that: The glass-ceramic substrate is prepared by the following steps: (1) The above raw materials are batched, mixed, melted, clarified and homogenized to obtain a mixture; (2) Then cast the mixture into a mold; (3) The cast mixture is annealed, nucleated and crystallized to finally obtain blast furnace slag glass ceramic.

3. The multi-layer metal coating logo according to claim 1, characterized in that: The thickness of the glass-ceramic substrate is 0.1-1.5 mm.

4. A multi-layer metal coating logo according to claim 1, characterized in that: The wear-resistant coating has a thickness of 5-20 nm.

5. A method for preparing a multi-layered metal coating logo as described in any one of claims 1-4, comprising the following preparation steps: S1: First, deposit the first metal layer Ti layer, W layer, Zr layer and Cr layer and the second metal layer Ti layer and Cu layer sequentially on the surface of the glass ceramic substrate; S2: Then screen print ink to form a logo pattern, and then remove the multi-layer metal coating and ink that are not covered by the ink logo pattern in sequence; S3: The ceramic and lubricating phase composite coating is then sprayed onto the surface of the substrate material using plasma spraying technology to form a surface coating, thus creating a multi-layer metal coating logo.