Amorphous alloy with high frictional wear resistance as well as preparation method and application of amorphous alloy

Abstract

The invention discloses an amorphous alloy with high frictional wear resistance and a preparation method and application thereof, and relates to the technical field of amorphous alloys, in particular to (Zr 41.2. 2, Ti 13.8, Cu 12.5, Ni 10Be 22.5) (100-x) CoxNay. Wherein x is smaller than or equal to 10, y is larger than 0 and smaller than 0.2, x is the atomic number percentage of Co accounting for 41.2% of Zr, 13.8% of Ti, 12.5% of Cu, 10% of Ni and 22.5% of Be, and y is the adding mass percentage of the sodium-containing compound. The high-friction-wear-resistance amorphous alloy has the effect of remarkably improving the hardness and strength of the high-friction-wear-resistance amorphous alloy, so that the high-friction-wear-resistance amorphous alloy has excellent mechanical properties when the harmonic flexible gear is prepared on the basis of the friction-wear resistance, and the high-friction-wear-resistance amorphous alloy has a wide application scene under the wear-resistance working condition.

Description

Technical Field

[0001] The present application relates to the technical field of amorphous alloys, and in particular to a highly friction- and wear-resistant amorphous alloy and a preparation method and application thereof. Background Art

[0002] Metal products are subject to various forms of direct or indirect damage during use, the most common of which are wear and corrosion. Wear refers to the gradual deterioration of metal components due to mechanical friction between them, such as the wear between locomotive wheels and rails. Corrosion refers to the gradual deterioration or deterioration of metal materials under the influence of environmental media, with rust being one of the most common corrosion phenomena. Metal materials are found in every aspect of production and life, from daily life to industrial systems. Wherever metal materials are used, wear and corrosion are inevitable. Consequently, these problems not only cause economic losses but can even lead to catastrophic accidents.

[0003] In modern industry, a large amount of research has been conducted on the problems of metal wear and corrosion. How to obtain wear-resistant and corrosion-resistant metal materials has become one of the key directions of current materials research. For example, the Chinese patent application document with publication number CN116855791A discloses a method for improving the forming ability and corrosion and wear resistance of zirconium-based amorphous materials. The method for improving the forming ability and corrosion and wear resistance of zirconium-based amorphous materials uses a high-zirconium-based amorphous material composed of 40-45% Zr, 10-14% Ti, 10-15% Cu, 8-10% Ni, 20-25% Be, and 0.5-3% rare earth elements (Y, Gd, and Sc) by mass.

[0004] However, in this method of improving the glass-forming ability and corrosion and wear resistance of zirconium-based amorphous materials, the high content of Zr provides a large atomic skeleton for the glass-forming ability of high zirconium-based amorphous materials, Be lowers the melting point and stabilizes the supercooled liquid phase, and rare earth elements further optimize the thermodynamic and kinetic conditions of amorphous formation through microalloying. However, it is still impossible to achieve a higher amorphous glass-forming ability, which leads to insufficient wear resistance for use in scenarios with high wear resistance requirements, and needs to be improved. Summary of the Invention

[0005] In view of this, the first object of this application is to provide a highly friction- and wear-resistant amorphous alloy to achieve the purpose of significantly improving wear resistance. The specific solution is as follows: A highly friction-wear-resistant amorphous alloy is represented by the following formula (1): (Zr41.2Ti13.8Cu12.5Ni10Be22.5) （100-x） Co x Na y ; Wherein, x≤10, 0<y<0.2, and x is the atomic number percentage of Co in Zr41.2Ti13.8Cu12.5Ni10Be22.5, and y is the added mass percentage of the sodium-containing compound.

[0006] Preferably, the sodium-containing compound is NaCl.

[0007] Preferably, the glass forming ability of the highly friction and wear resistant amorphous alloy is greater than 30 mm, and the Rockwell hardness is greater than 55.5.

[0008] Preferably, the high friction and wear resistant amorphous alloy has a wear loss of less than 0.1 g after being worn on a single-sided flexspline for 24 hours.

[0009] Preferably: x is preferably 1-9; y is preferably 0.01-0.08.

[0010] A second object of the present invention is to provide a method for preparing a highly friction-resistant and wear-resistant amorphous alloy, which is used to prepare the highly friction-resistant and wear-resistant amorphous alloy as described above, comprising the following steps: Step 1: Use Zr41.2Ti13.8Cu12.5Ni10Be22.5 as the main material, Co as the auxiliary material, and the sodium-containing compound as an additive; Step 2: Melt and mix the main material and the auxiliary material uniformly, control the melting and mixing temperature to 850-1500° C., and obtain a molten mixed alloy liquid; Step 3: Adding a sodium-containing compound to the molten mixed alloy liquid, mixing uniformly and cooling to obtain a highly friction-resistant and wear-resistant amorphous alloy.

[0011] Preferably, the main material is obtained by surface peeling, ultrasonic cleaning and smelting zirconium, titanium, copper, nickel and beryllium in corresponding mass ratios, the zirconium is sponge zirconium and the titanium is sponge titanium.

[0012] Preferably: the melting temperature is 850-1500℃, the vacuum degree is 10 -3 -10 -4 Pa.

[0013] The third object of the present invention is to provide an application of a highly friction- and wear-resistant amorphous alloy, comprising using the highly friction- and wear-resistant amorphous alloy as described above and applying it to wear-resistant materials.

[0014] Preferably, the wear-resistant material is an amorphous flexible wheel, and the preparation method of the amorphous flexible wheel includes using a vacuum argon protected die casting device to melt a high friction and wear resistant amorphous alloy and forming a mold cavity, and the vacuum degree of the die casting device is pre-drawn to 10 -2 -10 -3Pa, after pre-evacuation, fill with argon to -0.06MPa, melting temperature is 850-1200℃, cooling rate is 10-10 2 K / s.

[0015] From the above scheme, it can be seen that the present application provides a highly friction-resistant and wear-resistant amorphous alloy and its preparation method and application. The highly friction-resistant and wear-resistant amorphous alloy has the following beneficial effects: 1. By introducing active metal sodium into the amorphous alloy using chloride, the risk of the active metal being contaminated by oxygen and other substances, which would damage the glass-forming ability of the amorphous alloy, is avoided; 2. By using industrial-grade titanium sponge and zirconium sponge as raw materials, the material cost of amorphous alloys is reduced, and it has a wide range of industrial application scenarios; 3. The hardness and strength of the highly friction- and wear-resistant amorphous alloy of the present application are significantly improved, and it is friction- and wear-resistant, so that it has excellent mechanical properties when preparing a harmonic flexible wheel, and thus has a wide range of application scenarios under wear-resistant working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0017] Figure 1 This is a diagram showing the wear volume and Rockwell hardness at different sodium contents in this application; Figure 2 This application is based on the X-ray diffraction spectra of amorphous alloys with different sodium contents cast into 30 mm diameter rods. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] The following is a detailed description of a highly friction and wear resistant amorphous alloy of the present application and its preparation method and application.

[0020] A highly friction-wear-resistant amorphous alloy is represented by the following formula (1): (Zr41.2Ti13.8Cu12.5Ni10Be22.5) （100-x）Co x Na y ; Wherein, x≤10, 0<y<0.2, and x is the atomic number percentage of Co in Zr41.2Ti13.8Cu12.5Ni10Be22.5, and y is the added mass percentage of the sodium-containing compound.

[0021] In the examples of this application, NaCl was used as the sodium-containing compound based on its melting and decomposition temperatures. Testing showed that the high-friction and wear-resistant amorphous alloy of this application exhibited a glass-forming ability greater than 30 mm and a Rockwell hardness greater than 55.5. Furthermore, the wear loss of this high-friction and wear-resistant amorphous alloy after 24 hours of wear on a single-sided flexspline was less than 0.1 g.

[0022] Of course, in order to further improve the hardness and wear resistance of the highly friction and wear resistant amorphous alloy, x is preferably 1-9, and y is preferably 0.01-0.08.

[0023] A method for preparing a highly friction-resistant and wear-resistant amorphous alloy, for preparing the highly friction-resistant and wear-resistant amorphous alloy as described above, comprises the following steps: Step 1: Use Zr41.2Ti13.8Cu12.5Ni10Be22.5 as the main material, Co as the auxiliary material, and the sodium-containing compound as an additive; Step 2: Melt and mix the main material and the auxiliary material uniformly, control the melting and mixing temperature to 850-1500° C., and obtain a molten mixed alloy liquid; Step 3: Adding a sodium-containing compound to the molten mixed alloy liquid, mixing uniformly and cooling to obtain a highly friction-resistant and wear-resistant amorphous alloy.

[0024] The main materials are zirconium, titanium, copper, nickel and beryllium in corresponding mass ratios, which are obtained by surface peeling, ultrasonic cleaning and smelting. The zirconium is industrial-grade sponge zirconium and the titanium is industrial-grade sponge titanium. The smelting temperature is 850-1500℃ and the vacuum degree is 10 -3 -10 -4 In the process of melting and mixing the main material and the auxiliary material in step 2, sodium chloride is decomposed by applying electricity, and the formed chloride ions are removed from the molten mixed alloy liquid under a vacuum state, thereby avoiding the influence of chloride ions.

[0025] An application of a highly resistant amorphous alloy, comprising using the highly resistant amorphous alloy as described above and applying it to a wear-resistant material. The wear-resistant material is an amorphous flexible wheel, and the preparation method of the amorphous flexible wheel comprises using a vacuum argon-protected die-casting device to melt the highly resistant amorphous alloy and forming a mold cavity, wherein the die-casting device is pre-evacuated to a vacuum degree of 10 -2 -10 -3Pa, after pre-evacuation, fill with argon to -0.06MPa, melting temperature is 850-1200℃, cooling rate is 10-10 2 K / s.

[0026] In the hardness and wear resistance tests, the present invention employed an amorphous flexspline fabricated from a highly wear-resistant amorphous alloy, which was then loaded into a harmonic reducer for life testing. Specifically, the test recorded the pre-assembly weight of the amorphous flexspline. After the harmonic reducer operated for 24 hours, the amorphous flexspline was removed and its post-test weight recorded. The weight difference was then measured and recorded as wear.

[0027] Example 1 A highly friction-resistant amorphous alloy is represented by the following formula (1): (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 93 Co7Na 0.01 ; The high-friction and wear-resistant amorphous alloy has a glass forming ability greater than 30 mm and a Rockwell hardness greater than 55.5. Furthermore, the wear loss of the high-friction and wear-resistant amorphous alloy after 24 hours of wear on a single-sided toothed flexible gear is less than 0.1 g.

[0028] A method for preparing a highly friction-resistant and wear-resistant amorphous alloy, for preparing the highly friction-resistant and wear-resistant amorphous alloy as described above, comprises the following steps: Step 1: Use Zr41.2Ti13.8Cu12.5Ni10Be22.5 as the main material, Co as the auxiliary material, and the sodium-containing compound as an additive; Step 2: Melt and mix the main material and the auxiliary material uniformly, control the melting and mixing temperature to 850° C., and obtain a molten mixed alloy liquid; Step 3: Adding a sodium-containing compound to the molten mixed alloy liquid, mixing uniformly and cooling to obtain a highly friction-resistant and wear-resistant amorphous alloy.

[0029] The main material is obtained by surface peeling, ultrasonic cleaning and smelting of zirconium, titanium, copper, nickel and beryllium in corresponding mass ratios. The zirconium is industrial-grade sponge zirconium and the titanium is industrial-grade sponge titanium. The smelting temperature is 1400°C and the vacuum degree is 10 -3 -10 -4 Pa. The vacuum degree is the control range. As the smelting progresses, the vacuum degree changes continuously and is replenished until the vacuum degree meets the set threshold.

[0030] An application of a highly resistant amorphous alloy, comprising using the highly resistant amorphous alloy as described above and applying it to a wear-resistant material. The wear-resistant material is an amorphous flexible wheel, and the preparation method of the amorphous flexible wheel comprises using a vacuum argon-protected die-casting device to melt the highly resistant amorphous alloy and forming a mold cavity, wherein the die-casting device is pre-evacuated to a vacuum degree of 10 -2 -10 -3 Pa, after pre-evacuation, argon is filled to -0.06MPa, the melting temperature is 950℃, and the cooling rate is 30K / s.

[0031] Example 2 The difference between Example 2 and Example 1 is that the added mass percentage of sodium in Example 2 is 0.03%.

[0032] Example 3 The difference between Example 3 and Example 1 is that the added mass percentage of sodium in Example 3 is 0.05%.

[0033] Example 4 The difference between Example 4 and Example 1 is that the mass percentage of added sodium in Example 4 is 0.08%.

[0034] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that no sodium-containing compound is added in Comparative Example 1.

[0035] Comparative Example 2 The difference between Comparative Example 2 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 2 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 99 As shown in Co1.

[0036] Comparative Example 3 The difference between Comparative Example 3 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 3 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 97 As shown in Co3.

[0037] Comparative Example 4 The difference between Comparative Example 4 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 4 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 95 As shown in Co5.

[0038] Comparative Example 5 The difference between Comparative Example 5 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 5 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 91 As shown in Co9.

[0039] Comparative Example 6 The difference between Comparative Example 6 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 6 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 59 Co 11 shown.

[0040] Comparative Example 7 The difference between Comparative Example 7 and Comparative Example 1 is that the high friction and wear resistant amorphous alloy in Comparative Example 7 is represented by the formula (Zr41.2Ti13.8Cu12.5Ni10Be22.5) 87 Co 13 shown.

[0041] Performance tests were conducted on the above-mentioned Examples 1 to 4 and Comparative Examples 1 to 7, and the test results are shown in Table 1 below.

[0042] Table 1 Performance test results

[0043] It can be seen from Table 1 above that by adding Co and sodium metal elements, the wear resistance can be improved while ensuring the hardness of the highly friction and wear resistant amorphous alloy. When the addition amount of sodium is 0.01-0.08 mass percent, the alloy has the best wear resistance and can achieve a glass forming ability greater than 30 mm.

[0044] In summary, the present application provides a highly friction-resistant and wear-resistant amorphous alloy, and its preparation method and application. The highly friction-resistant and wear-resistant amorphous alloy introduces active metal sodium into the amorphous alloy by using chloride, thereby avoiding the risk of active metal being contaminated by oxygen and the like, thereby damaging the glass-forming ability of the amorphous alloy. At the same time, by using industrial-grade sponge titanium and industrial-grade sponge zirconium as raw materials, the material cost of the amorphous alloy is reduced, and it has a wide range of industrial application scenarios. Therefore, the hardness and strength of the highly friction-resistant and wear-resistant amorphous alloy of the present application are significantly improved, and it is resistant to friction and wear, so that it has excellent mechanical properties when preparing a harmonic flexible wheel, thereby having a wide range of application scenarios under wear-resistant working conditions.

[0045] References to "first," "second," "third," "fourth," and the like (if any) herein are intended to distinguish similar objects and are not necessarily intended to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, or apparatus.

[0046] It should be noted that the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A highly friction-wear-resistant amorphous alloy, characterized in that: As shown in the following formula (1): (Zr41.2Ti13.8Cu12.5Ni10Be22.5) （100-x） Co x Na y ; Wherein, x≤10, 0<y<0.2, and x is the atomic number percentage of Co in Zr41.2Ti13.8Cu12.5Ni10Be22.5, and y is the added mass percentage of the sodium-containing compound.

2. The highly friction-wear-resistant amorphous alloy according to claim 1, characterized in that: The sodium-containing compound is NaCl.

3. The highly friction-wear-resistant amorphous alloy according to claim 1, characterized in that: The high friction and wear resistant amorphous alloy has a glass forming ability greater than 30 mm and a Rockwell hardness greater than 55.

5.

4. The highly friction-wear-resistant amorphous alloy according to claim 1, characterized in that: The high friction and wear resistance amorphous alloy is subjected to 24-hour wear of a single-sided toothed flexible gear, and the loss is measured to be less than 0.1 g.

5. The highly friction-wear-resistant amorphous alloy according to claim 1, characterized in that: x is preferably 1-9; y is preferably 0.01-0.

08.

6. A method for preparing a highly friction-resistant and wear-resistant amorphous alloy, for preparing a highly friction-resistant and wear-resistant amorphous alloy as claimed in any one of claims 1 to 5, characterized in that: The steps include: Step 1: Use Zr41.2Ti13.8Cu12.5Ni10Be22.5 as the main material, Co as the auxiliary material, and the sodium-containing compound as an additive; Step 2: Melt and mix the main material and the auxiliary material uniformly, control the melting and mixing temperature to 850-1500° C., and obtain a molten mixed alloy liquid; Step 3: Adding a sodium-containing compound to the molten mixed alloy liquid, mixing uniformly and cooling to obtain a highly friction-resistant and wear-resistant amorphous alloy.

7. The method for preparing a highly friction-wear-resistant amorphous alloy according to claim 6, wherein: The main material is obtained by surface peeling, ultrasonic cleaning and smelting zirconium, titanium, copper, nickel and beryllium in corresponding mass ratios. The zirconium is sponge zirconium and the titanium is sponge titanium.

8. The method for preparing a highly friction-wear-resistant amorphous alloy according to claim 7, wherein: The smelting temperature is 850-1500°C and the vacuum degree is 10 -3 -10 -4 Pa.

9. An application of a highly friction and wear resistant amorphous alloy, characterized by: The invention comprises adopting a high friction and wear resistant amorphous alloy as claimed in any one of claims 1 to 5 and applying the alloy to wear resistant materials.

10. The use of a highly friction and wear resistant amorphous alloy according to claim 7, characterized in that: The wear-resistant material is an amorphous flexible wheel, and the preparation method of the amorphous flexible wheel includes using a vacuum argon protected die casting device to melt a high friction and wear resistant amorphous alloy and mold cavity molding, and the vacuum degree of the die casting device is 10 -2 -10 -3 Pa, melting temperature is 850-1200℃, cooling rate is 10-10 2 K / s.

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