Strong-oxidation-resistant zirconium-based amorphous alloy and preparation method therefor

Abstract

The present invention belongs to the technical field of amorphous alloys, and particularly relates to a strong-oxidation-resistant zirconium-based amorphous alloy and a preparation method therefor. The composition of the strong-oxidation-resistant zirconium-based amorphous alloy is: ZraCubNicMdNeRef, wherein M is one or more of Hf, Ti, Nb, V, Mo, W, Ta and Ag; N is one or more of Al, B, Ca, Mg and Be; Re is one or more of rare earth elements; and 50≤a≤70, 5≤b≤20, 5≤c≤20, 0≤d≤15, 0≤e≤15, 0≤f≤2, and the sum of a, b, c, d, e and f is 100. The strong-oxidation-resistant zirconium-based amorphous alloy provided in the present invention has very good corrosion resistance, is suitable for relatively complex working conditions, particularly industrial application scenarios where the alloy may come into contact with other materials, and has relatively good amorphous forming ability and mechanical properties.

Description

A strong oxidation-resistant zirconium-based amorphous alloy and preparation method thereof Technical Field

[0001] The present invention belongs to the technical field of amorphous alloys, and in particular relates to a strong oxidation-resistant zirconium-based amorphous alloy and a preparation method thereof. Background Art

[0002] Amorphous alloys are alloys that are rapidly cooled from liquid to solid, and still retain the disordered arrangement of liquid atoms at room temperature. Their internal atomic structure is extremely dense, without a crystal structure, and have good mechanical properties and corrosion resistance.

[0003] However, as the application of zirconium-based bulk amorphous alloys expands, the environment in which they serve becomes more complex, and the requirements for their corrosion resistance are constantly increasing. Zirconium-based amorphous alloys are used in industrial applications where they come into contact with other materials (such as stainless steel) and halogen ions, such as 84 disinfectant in daily life, Fe 3+ ions and Cl - Ions, strong oxidizing substances + acids, etc. are more prone to corrosion. Therefore, it is very necessary to improve the corrosion resistance of amorphous alloys without affecting their mechanical properties. Summary of the Invention

[0004] The purpose of the present invention is to provide a strong oxidation resistant zirconium-based amorphous alloy and a preparation method thereof.

[0005] In order to solve the above technical problems, the present invention provides a zirconium-based amorphous alloy with strong oxidation resistance, the composition of the amorphous alloy is: Zr a Cu b Ni c M d N e Re f ;in

[0006] M is one or more of Hf, Ti, Nb, V, Mo, W, Ta, and Ag;

[0007] N is one or more of Al, B, Ca, Mg, and Be;

[0008] Re is one or more rare earth elements; and

[0009] 50≤a≤70, 5≤b≤20, 5≤c≤20, 0≤d≤15, 0≤e≤15, 0≤f≤2, and the sum of a, b, c, d, e, and f is 100.

[0010] In one embodiment of the present application, 50≤a≤60, 11≤b≤18, 10≤c≤17, 0≤d≤10, 0≤e≤12, and 0≤f≤2.

[0011] Accordingly, the present invention provides a method for preparing a zirconium-based amorphous alloy with strong oxidation resistance, comprising:

[0012] Mixing industrial grade purity raw materials according to the composition of the amorphous alloy;

[0013] The alloy rods are prepared by arc melting or induction melting under argon protection.

[0014] In one embodiment of the present application, when arc melting the alloy, the alloy is turned over 2 to 3 times, and then the alloy rod is cast through a copper mold;

[0015] The diameter of the alloy rod is 4mm and the vacuum degree is less than 50Pa.

[0016] In one embodiment of the present application, the induction heating temperature during induction melting is about 1200°C.

[0017] Accordingly, the present invention provides an application of the strong oxidation-resistant zirconium-based amorphous alloy as described above, which can be applied to consumer electronics, medical equipment, aerospace industry, machinery and instrumentation industry, and automobile industry.

[0018] Accordingly, the present invention provides an application of the amorphous alloy as described above, and the amorphous alloy can be used as a wear-resistant and corrosion-resistant material.

[0019] The beneficial effect of the present invention is that the highly oxidizing zirconium-based amorphous alloy of the present invention has good corrosion resistance in general acidic and composite highly oxidizing acidic environments, is suitable for more complex working conditions, especially industrial application scenarios that come into contact with other materials, and has good amorphous forming ability and mechanical properties (tensile strength ≥1200MPa).

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purposes and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] FIG1 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0024] FIG2 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0025] FIG3 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0026] FIG4 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0027] FIG5 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0028] FIG6 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0029] FIG7 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Example 1;

[0030] FIG8 is a metallographic structure of the core of the cross section of the non-gold alloy prepared in Comparative Example 1;

[0031] FIG9 is a metallographic structure of the core of the cross section of the non-gold alloy prepared in Comparative Example 2;

[0032] FIG10 is a metallographic structure of the core of the cross section of the non-gold alloy prepared in Comparative Example 3;

[0033] FIG11 is a metallographic structure of the core of a cross section of a non-gold alloy prepared in Comparative Example 4;

[0034] FIG12 is the metallographic structure of the core of the cross section of the non-gold alloy prepared in Comparative Example 5. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Preparation process: All raw materials used are industrial-grade pure metals. After the raw materials are mixed according to atomic percentages, alloy rods are produced by arc melting or induction melting under argon protection. To ensure the uniformity of the alloy, the alloy is flipped 2-3 times during arc melting. It is then cast through a copper mold. The alloy rod diameter is 4 mm. The induction heating temperature is approximately 1200°C and the vacuum degree is less than 50 Pa. The alloy composition and tensile strength of each embodiment and comparative example are shown in the table below:

[0037] As can be seen from the table above, the tensile strengths of Examples 1-7 and Comparative Examples 1-5 are not very different and are relatively close. Referring to Figures 1 to 12, Examples 1-7 and Comparative Examples 1-5 are all amorphous alloys.

[0038] The corrosion resistance of each embodiment and comparative example was tested by immersion weight loss method: 10 pieces of amorphous silicon wafers with a diameter of 4 mm and a thickness of 20 mm were placed in a corrosion solution and immersed at room temperature for 24 hours. The test results are shown in the following table.

[0039] As can be seen from the above table, the corrosion resistance of Comparative Examples 1-5 and Examples 1-7 to HCl, HNO3, and H2SO4 is not very different. However, in the composite strong oxidizing acid solution, the corrosion rate of Example 1-7 is significantly lower, and the corrosion resistance is better.

[0040] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A zirconium-based amorphous alloy with strong oxidation resistance, characterized in that: The composition of the amorphous alloy is: Zr a Cu b Ni c M d N e Re f ;in M is one or more of Hf, Ti, Nb, V, Mo, W, Ta, and Ag; N is one or more of Al, B, Ca, Mg, and Be; Re is one or more rare earth elements; as well as 50≤a≤70, 5≤b≤20, 5≤c≤20, 0≤d≤15, 0≤e≤15, 0≤f≤2, and the sum of a, b, c, d, e, and f is 100.

2. The strong oxidation resistant zirconium-based amorphous alloy according to claim 1, characterized in that: 50≤a≤60,11≤b≤18,10≤c≤17,0≤d≤10,0≤e≤12,0≤f≤2.

3. A method for preparing a strong oxidation resistant zirconium-based amorphous alloy according to claim 1 or 2, characterized in that: include: Mixing industrial grade purity raw materials according to the composition of the amorphous alloy; The alloy rods are prepared by arc melting or induction melting under argon protection.

4. The method for preparing a strong oxidation resistant zirconium-based amorphous alloy according to claim 3, wherein: When the alloy is arc-melted, it is turned over 2 to 3 times and then cast into alloy rods through copper molds; The diameter of the alloy rod is 4mm and the vacuum degree is less than 50Pa.

5. The method for preparing a strong oxidation resistant zirconium-based amorphous alloy according to claim 3, wherein: The induction heating temperature during induction melting is about 1200℃.

6. An application of the strong oxidation resistant zirconium-based amorphous alloy according to any one of claims 1 or 2, characterized in that: The amorphous alloy can be applied to consumer electronic products, medical equipment products, aerospace industry, machinery and instrument industry, and automobile industry.

7. A use of the amorphous alloy according to any one of claims 1 or 2, characterized in that: The amorphous alloy can be used as a wear-resistant and corrosion-resistant material.