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Zinc-based massive amorphous alloy and preparation method thereof

An amorphous alloy and bulk technology, applied in the field of zinc-based bulk amorphous alloys, can solve the problems of high glass transition temperature, high energy consumption, and unfavorable processing of iron-cobalt-zirconium-based alloys, and achieve good oxidation resistance and low cost , the effect of strong antioxidant capacity

Inactive Publication Date: 2011-11-09
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In recent years, bulk amorphous alloys have attracted much attention due to their excellent properties in the supercooled liquid region, but there are various problems in the bulk amorphous alloy systems that have been developed so far, which limit their extensive research and application, such as gold / platinum / palladium The cost of the metal glass based on the base is too high, the rare earth base is too active, and the glass transition temperature of the iron-cobalt-zirconium base is high, which is not conducive to processing and consumes a lot of energy

Method used

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  • Zinc-based massive amorphous alloy and preparation method thereof
  • Zinc-based massive amorphous alloy and preparation method thereof
  • Zinc-based massive amorphous alloy and preparation method thereof

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Embodiment 1

[0030] Embodiment 1, zinc-based bulk amorphous alloy Zn 40 Mg 11 Ca 35 Yb14 preparation of

[0031] After the four components of Zn, Mg, Yb with a purity of not less than 99.9wt% and Ca with a purity of not less than 99wt% are prepared in a molar ratio of 40:11:14:35, the raw materials are placed in a quartz tube and placed in a high frequency induction furnace. Use a vacuum pump to evacuate to 5.0×10 -4 Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, it is spray-cast into a copper mold cooled with liquid nitrogen, and the composition is Zn 40 Mg 11 Ca 35 Yb 14 , a bulk amorphous alloy with a diameter of 1 mm.

[0032] Its X-ray diffraction (XRD) as figure 1 As shown, it can be seen that the alloy is a completely amorphous alloy.

[0033] The Zn 40 Mg 11 Ca 35 Yb 14 Thermal analysis (DSC) of zinc-based bulk amorphous alloys ...

Embodiment 2

[0034] Embodiment 2, zinc-based bulk amorphous alloy Zn 40 Mg 11 Ca 31 Yb 18 preparation of

[0035] After the four components of Zn, Mg, Yb with a purity of not less than 99.9wt% and Ca with a purity of not less than 99wt% are prepared in a molar ratio of 40:11:18:31, the raw materials are placed in a quartz tube , into a high-frequency induction furnace. The raw material is placed in a quartz tube and placed in a high frequency induction furnace. Use a vacuum pump to evacuate to 5.0×10 -4 Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, it is spray-cast into a copper mold cooled with liquid nitrogen, and the composition is Zn 40 Mg 11 Ca 31 Yb 18 , a bulk amorphous alloy with a diameter of 2 mm.

[0036] Its X-ray diffraction (XRD) as image 3 As shown, it can be seen that the alloy is a completely amorphous alloy.

[0037] T...

Embodiment 3

[0038] Embodiment 3, zinc-based bulk amorphous alloy Zn 45 Mg 11 Ca 25 Yb 15 Sr 4 preparation of

[0039] After the five components of Zn, Mg, Yb with a purity of not less than 99.9wt% and Ca and Sr with a purity of not less than 99wt% are prepared in a molar ratio of 45:11:15:25:4, the raw materials are placed In the quartz tube, put into a high-frequency induction furnace. The raw material is placed in a quartz tube and placed in a high frequency induction furnace. Use a vacuum pump to evacuate to 5.0×10 -4 Above Pa, after filling with an appropriate amount of high-purity argon, heat it with a high-frequency coil and small current until it melts. When the electromagnetic stirring is uniform, it is spray-cast into a copper mold cooled with liquid nitrogen, and the composition is Zn 45 Mg 11 Ca 25 Yb 15 Sr 4 , a bulk amorphous alloy with a diameter of 3 mm.

[0040] Its X-ray diffraction (XRD) as Figure 5 As shown, it can be seen that the alloy is a completely a...

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Abstract

The invention relates to a zinc-based massive amorphous alloy and application thereof. Zinc is a main component of the alloy, and the composition of the alloy is represented by the following formula: ZnaMgbCacYbdXe, wherein subscripts represent atom ratios (molar ratios), a is more than or equal to 36 and less than or equal to 60, b is larger than or equal to 9 and less than or equal to 15, c is larger than or equal to 5 and less than or equal to 39, d is larger than or equal to 0 and less than or equal to 19, e is more than or equal to 0 and less than or equal to 25, and a+b+c+d+e=100; and the element X is one or more elements selected from Sr, Ba, La, Ce, Pr, Nd, Sm, Sc, Li, Ga, Sn, Ni, Cu, Ag and Al. The alloy contains at least 50% of amorphous phase in volume percent. Because of good inoxidability, low cost, low glass transformation temperature, wide supercooling liquid phase zone and the like, the alloy is extremely suitable for micro-nano scale formation.

Description

technical field [0001] The invention relates to an alloy, in particular to a zinc-based bulk amorphous alloy with zinc as the main component, an appropriate amount of alloy elements added, and at least 50% of the amorphous phase (volume percentage). Background technique [0002] Amorphous alloys show a highly disordered state in structure, which makes amorphous have some characteristics superior to crystals, such as high strength and good elasticity (the elastic limit is about 2%, while the general crystalline metal is about 0.2%). Corrosion, high magnetic permeability, radiation resistance, fatigue resistance, wear resistance, and excellent processing ability in the supercooled liquid phase region, etc. Since Duwez et al. prepared amorphous Au-Si alloys by rapid cooling of melts in 1960, amorphous alloys have been active in the frontier field of material physics, especially since the end of the 1980s. Electric arc furnaces have produced materials with diameters up to milli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00
Inventor 焦维赵德乾郗学奎汪卫华潘明祥
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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