A niobium-based bulk amorphous alloy and its preparation method

An amorphous alloy and niobium-based technology, applied in the field of niobium-based amorphous alloy materials, can solve problems such as weak forming ability and limited application fields, and achieve the effects of improving processing technology, expanding applications, and excellent corrosion resistance

Active Publication Date: 2017-07-21
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, so far, the research results of niobium-based amorphous alloy materials are limited to strips, and their forming ability is very weak, which seriously limits their application fields.
However, there has been no report on the successful preparation of niobium-based bulk amorphous alloys.
For example, the Inoue research group of Tohoku University in Japan has conducted research on niobium-based amorphous alloys and prepared niobium-based amorphous strips. However, this low-dimensional amorphous alloy does not have a supercooled liquid phase region, and its formation ability is very weak. , thus severely restricting its field of application

Method used

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  • A niobium-based bulk amorphous alloy and its preparation method
  • A niobium-based bulk amorphous alloy and its preparation method
  • A niobium-based bulk amorphous alloy and its preparation method

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Embodiment 1

[0045] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 39co 18 B 1 .

[0046] The preparation method of the niobium-based bulk amorphous alloy is as follows:

[0047] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:39:18:1; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; The suction casting device sucks the master alloy melt into the water-cooled copper mold to obtain the composition of Nb 42 Ni 39 co 18 B 1 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (a) shown.

[0048] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 In (a) s...

Embodiment 2

[0053] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 38 co 18 B 2 .

[0054] The preparation method of the niobium-based bulk amorphous alloy is as follows:

[0055] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:38:18:2; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; In the suction casting device, the master alloy melt is sucked into the water-cooled copper mold, and the composition is Nb 42 Ni 38 co 18 B 2 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (b) shown.

[0056] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 As s...

Embodiment 3

[0061] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 37 co 18 B 3 .

[0062] The preparation method of the niobium-based bulk amorphous alloy is as follows:

[0063] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:37:18:3; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; In the suction casting device, the master alloy melt is sucked into the water-cooled copper mold, and the composition is Nb 42 Ni 37 co 18 B 3 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (c) shown.

[0064] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 As s...

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Abstract

The invention provides a niobium-based bulk amorphous alloy, the molecular formula of which is Nb a Ni b co c m d , where the subscripts a, b, c, d represent the atomic content of the corresponding element, 40≤a≤50, 5≤b≤45, 5≤c≤30, 1≤d≤15, and a+b+c+d=100, M is selected from One or more of B, Si, C, Al, Cu, Ti, Zr, Pd, Ag, Au and other elements. The size of the niobium-based bulk amorphous alloy is equal to or not less than 1 mm in each dimension, so it has excellent glass forming ability, stability and mechanical properties, and has good application prospects. In addition, materials such as niobium-based amorphous wire can be produced by using the niobium-based bulk amorphous alloy, thereby further expanding the application field of the niobium-based amorphous alloy material.

Description

technical field [0001] The invention relates to the technical field of niobium-based amorphous alloy materials, in particular to a niobium-based bulk amorphous alloy and a preparation method thereof. Background technique [0002] Amorphous alloy is a new type of metal material in which atoms lose long-range order in three-dimensional space while maintaining short-range order. The prosperity of amorphous physics largely depends on the development of amorphous materials. In addition to the development of new processes for preparing amorphous alloys, the development of new bulk amorphous alloys with functional properties has become an important development goal in the field of amorphous alloys. one. Compared with crystalline materials, amorphous alloys have many unique physical, chemical and mechanical properties due to their unique structure. The potential application prospects of amorphous alloys in electronic power, national defense, aerospace and other high-tech and civil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C1/03
Inventor 霍军涛常春涛李润伟王新敏
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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