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

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 ...

AI Technical Summary

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 gas atomization pulverization technology and spark plasma sintering technology to prepare powder and large-size bulk zirconium-based amorphous alloys. crystal alloy method

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