Manufacturing method of ultra-thin rhenium foil

Abstract

The invention relates to a manufacturing method of ultra-thin rhenium foil. The manufacturing method comprises the following steps that rhenium powder with the particle size ranging from -100 meshes to -300 meshes and the purity being 4 N or above is placed in a press machine, and a pure rhenium pressed blank with the thickness being 10 mm is prepared under the pressure ranging from 100 Mpa to 200 Mpa; the pure rhenium pressed blank is placed in a vacuum furnace or a high-temperature furnace to be subjected to high-temperature sintering, and a pure rhenium plate blank uniform in crystallization is prepared; the pure rhenium plate blank is continuously rolled by adopting a multi-roll mill and annealing linkage, and continuous rolling and annealing are carried out until a rhenium sheet is obtained; and the rhenium sheet is subjected to a combined rolling process in which chemical etching thinning and multi-roll mill finish rolling are carried out in parallel, and finally the ultra-thin rhenium foil with the target product thickness being 9-11 microns is obtained. The method has the advantages of high efficiency, good surface quality, low equipment investment and the like.

Description

technical field [0001] The invention belongs to the field of powder metallurgy preparation, in particular to a method for manufacturing an ultra-thin rhenium foil with a thickness of only about 10 microns. Background technique [0002] Ultra-thin metal rhenium foil is mainly used as a variety of precision resistors, precision temperature fields, high-temperature precision precision parts in harsh and long-lasting environments, etc., and is widely used in cutting-edge fields such as aviation, aerospace, atomic energy, ultra-high temperature alloys, and semiconductor vacuum coating. [0003] Metal rhenium has the characteristics of high density, high melting point, excellent high-temperature strength and high-temperature plasticity, and no high-temperature brittle transition. When making metal rhenium sheets, due to its high melting point, large elastic aftereffect, fast hardening speed, and particularly difficult processing, It is not easy to process a metal sheet with a thic...

AI Technical Summary

Problems solved by technology

In the development of science and technology and engineering applications around the world, the thickness of rhenium sheets is required to be thinner and thinner. For example, the thickness of rhenium foil used in mass spectrometer resistors should be less than 0.03mm. Many sophisticated equipment are designed with higher performance. When, it cannot be realized because the thickness of the rhenium foil cannot reach

The production of rhenium sheets with a thickness of less than 0.01 mm is limited by the mechanical characteristics of rolling equipment, the annealing efficiency is low, and the production efficiency is too low to achieve industrial mass production.