Method for preparing beryllium-copper alloy sheet by adopting continuous magnetron sputtering physical-vapor deposition method

Abstract

The invention relates to a method for preparing a beryllium-copper alloy sheet, and particularly relates to a method for preparing the beryllium-copper alloy sheet by adopting a continuous magnetron sputtering physical-vapor deposition method. The method for preparing the beryllium-copper alloy sheet by adopting the continuous magnetron sputtering physical-vapor deposition method comprises the following steps: depositing a pure Be or Be-rich membrane with good combination on the single surface or both surfaces of a pure copper strip by taking a pure Be metal target or a beryllium-copper alloy target with high beryllium content as a cathode and the pure copper strip as an anode and adopting the magnetron sputtering physical-vapor deposition method; and then carrying out diffusion treatment at high temperature to enable Be atoms to be diffused inwards and permeated into a pure copper base body till the content of Be contained in the pure copper strip reaches 1-3 percent by weight so as to obtain a Cu-Be alloy strip, which is excellent in mechanical property and conductive property, with the Be content of 1-3 percent by weight. The method disclosed by the invention has the advantages of simplicity, easiness for operation, high work efficiency, energy-saving and environment-friendly preparation process, controllable quality and great suitability for industrialized application.

Description

technical field

[0001] The present invention relates to a method for preparing a beryllium-copper alloy sheet, more particularly, a method for preparing a high-performance Cu-1-3wt.%Be alloy sheet by continuous magnetron sputtering physical vapor deposition. Background technique

[0002] Beryllium-copper alloy is a typical precipitation-strengthened alloy, which has a series of advantages such as high elasticity, high strength, high conductivity, corrosion resistance, fatigue resistance, small elastic hysteresis, non-magnetism, and no sparks during impact. It is widely used It is used in aerospace, aviation, electronics, communication, machinery, petroleum, chemical industry, automobile and home appliance industries, and has broad application prospects.

[0003] At present, beryllium-copper alloy sheets and strips are basically prepared by rolling method, mainly including semi-continuous casting ingot + milling skin + heating + rough rolling + quenching + secondary rolling +...