Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy

A technology of zirconium-based amorphous alloy and amorphous alloy, which is applied in the field of amorphous alloys, can solve problems such as the limitation of amorphous forming ability, and achieve the effect of large width, high amorphous forming ability and high quality

Inactive Publication Date: 2013-02-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The purpose is to solve the problem that the size of the existing bulk amorphous alloys is limited by the ability of amorphous formation, and to provide a combination of g

Method used

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  • Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy
  • Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy
  • Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy

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Experimental program
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Embodiment

[0027] Example Large size block Zr 61 Cu 15 Ni 12.5 Al 10 Y 1.5 Preparation of Amorphous Alloys

[0028] 1. Preparation of amorphous alloy powder by gas atomization method

[0029] (1) Prepare raw materials according to the element mass ratio of the amorphous alloy to be prepared, and place them in the melting crucible of the gas atomization powder making equipment;

[0030] (2) Vacuumize the gas atomization powder making equipment to 10 -3 Pa, and then rush into argon as a protective gas for protection;

[0031] (3) Melting the raw materials by induction heating until the composition of the alloy solution is uniform;

[0032] (4) Pour the smelted alloy solution into the heat preservation bag that has been heated to 1000°C. The solution is atomized into alloy droplets through the nozzle under the action of argon gas not greater than 5MPa, and cooled into powder.

[0033] 2. Preparation of bulk amorphous alloy by spark plasma sintering

[0034] (1) The obtained powder ...

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Abstract

The invention relates to a preparation method for a zirconium-based amorphous alloy as well as powder and a large-sized block of the zirconium-based amorphous alloy, which belongs to the field of amorphous alloys, and is characterized by comprising the component of Zr61(Cu, Ni)27.5Al10Re1.5(at%), wherein Re is Y, La, Ce, Nd, Gd and Er, and adopting a manner of combination of the gas atomization powder milling technology and the spark plasma sintering technology. The preparation method comprises the following steps: preparing raw materials according to components of the amorphous alloy, and placing the raw materials into an induction crucible of gas atomization powder milling equipment; vacuumizing and filling inert gas for shielding; smelting to obtain an alloy solution with uniform components under the action of induction heating; pouring the alloy solution after smelting into an insulation bag at a constant speed slowly, and filling high-pressure inert gas as an atomizing medium at the same time; atomizing the alloy solution flow into small droplets under the impact of high-pressure airflow, and finally cooling to form amorphous alloy powder; collecting and screening the amorphous alloy powder; and under the protection of the inert gas, utilizing the spark plasma sintering technology to perform sintering on the amorphous alloy powder at different temperatures and pressure to obtain an amorphous alloy block.

Description

technical field [0001] The invention belongs to the field of amorphous alloys, and in particular relates to a method for preparing zirconium-based amorphous alloys, powders and large-sized blocks thereof. Background technique [0002] Amorphous alloys, also known as metallic glasses, refer to metallic materials with short-range order and long-range disorder in the arrangement of atoms in the solid state. In 1934, Kramer first reported the successful preparation of amorphous thin films by vapor deposition. In 1960, Duwez of California Institute of Technology prepared Au-Si amorphous thin strips by rapid quenching. Until the 1970s, although people did a lot of research on amorphous alloys, many alloy systems that could be prepared from amorphous alloys were found. However, it can only produce amorphous alloys in the form of thin strips, wires, and powders, which limits the application range of amorphous alloys in structural materials. [0003] Generally, amorphous materials ...

Claims

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Application Information

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IPC IPC(8): C22C45/10B22F9/08B22F3/105
Inventor 惠希东宋京国斯佳佳赵岩峰
Owner UNIV OF SCI & TECH BEIJING
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