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A kind of tantalum-based bulk amorphous alloy and preparation method thereof

A technology of amorphous alloys and large blocks, which is applied in the field of tantalum-based bulk amorphous alloys and its preparation, can solve the problems of small size of amorphous metals or alloys, and achieve good thermal stability, excellent corrosion resistance, and corrosion resistance The effect of superior performance

Active Publication Date: 2015-09-09
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain such a high cooling rate, the molten metal or alloy can only be sprayed onto a conductive substrate that conducts heat very well, and the size of the amorphous metal or alloy obtained in this way is very small

Method used

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  • A kind of tantalum-based bulk amorphous alloy and preparation method thereof
  • A kind of tantalum-based bulk amorphous alloy and preparation method thereof
  • A kind of tantalum-based bulk amorphous alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This example is used to illustrate the preparation of the tantalum-based amorphous alloy provided by the present invention.

[0033] Use the raw materials Ta, Ni and Co with a purity of more than 99.5%, prepare the raw materials at a molar ratio of 42:40:18, put them into an electric arc furnace with an argon atmosphere adsorbed by titanium, and smelt them 3 times to make the composition of the master alloy Evenly, after cooling, the master alloy ingot of Ta-Ni-Co ternary alloy is obtained; then the master alloy ingot is re-melted, and the master alloy melt is sucked into the water-cooled copper mold by using the suction casting device in the electric arc furnace to obtain the composition For Ta 42 Ni 40 co 18 , A cylindrical amorphous alloy with a diameter of 2 mm and a length of 5 cm.

[0034] The X-ray diffraction (XRD) result of this amorphous alloy is as follows figure 1 Shown (Ta 42 Ni 40 co 18 Corresponding curves), proving that the alloy is completely amo...

Embodiment 2

[0039] This example is used to illustrate the preparation of the tantalum-based amorphous alloy provided by the present invention.

[0040] Use the raw materials Ta, Ni, Co and Cu with a purity of more than 99.5%, and prepare the raw materials in a molar ratio of 42:38:18:2, put them into an electric arc furnace with an argon atmosphere adsorbed by titanium, and smelt 5 times. Make the composition of the master alloy uniform, and obtain the master alloy ingot of Ta-Ni-Co-Cu quaternary alloy after cooling; then re-melt the master alloy ingot, and use the suction casting device in the electric arc furnace to suck the master alloy melt Water-cooled copper mold, obtained composition is Ta 42 Ni 38 co 18 Cu 2 , A cylindrical amorphous alloy with a diameter of 2 mm and a length of 5 cm.

[0041] The X-ray diffraction (XRD) result of this amorphous alloy is as follows figure 1 Shown (Ta 42 Ni 38 co 18 Cu 2 Corresponding curves), proving that the alloy is completely amorphous...

Embodiment 3

[0045] This example is used to illustrate the preparation of the tantalum-based amorphous alloy provided by the present invention.

[0046] Use raw materials Ta, Ni, Co, and Pd with a purity of more than 99.5%, and prepare the raw materials at a molar ratio of 42:36:18:4, put them into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 6 times. Ensure that the composition of the master alloy is uniform, and obtain a master alloy ingot of Ta-Ni-Co-Pd quaternary alloy after cooling; then re-melt the master alloy ingot, and use the suction casting device in the electric arc furnace to suck the master alloy melt Water-cooled copper mold, obtained composition is Ta 42 Ni 38 co 18 PD 4 , A cylindrical amorphous alloy with a diameter of 2 mm and a length of 5 cm.

[0047] The X-ray diffraction (XRD) result of this amorphous alloy is as follows figure 1 Shown (Ta 42 Ni 38 co 18 PD 4 Corresponding curves), proving that the alloy is completely a...

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Abstract

The invention provides tantalum-based bulk amorphous alloy and a preparation method thereof. The tantalum-based bulk amorphous alloy contains the components in the following general formula: TaaNibCocMd, wherein a+b+c+d=100, a=40-60, b=5-45, c=5-30 and d=0-20; and M is one or more selected from Al, Si, Nb, B, Cu, Ti, Zr, Pd, Ag and Au. The tantalum-based bulk amorphous alloy has good heat stability, good mechanical property and good resistance to corrosion.

Description

technical field [0001] The invention relates to a tantalum-based bulk amorphous alloy and a preparation method thereof, in particular to a tantalum-based bulk amorphous alloy with tantalum as the main component and containing at least 50% volume percentage of amorphous phase. Background technique [0002] High-temperature liquid metals or alloys usually crystallize into crystals under equilibrium cooling conditions. Since the 1960s, it has been found that some metals or alloys (such as Au-Si, etc.) are cooled at a high speed under non-equilibrium conditions, such as reaching 10 per second. 4 ~10 6 In the order of K, it will maintain an extremely viscous state when it is solidified, thereby inhibiting crystallization and obtaining an amorphous metal or alloy. However, in order to obtain such a high cooling rate, the molten metal or alloy can only be sprayed onto a conductive substrate with very good thermal conductivity, and the size of the obtained amorphous metal or alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10
Inventor 孟栋易军丁大伟赵德乾汪卫华潘明祥
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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