Preparation method of spongy tantalum sheets

Abstract

The invention belongs to the technical field of tantalum sheet preparation and discloses a preparation method of spongy tantalum sheets. The preparation method comprises the steps that an ethanol solution is prepared, a conductive agent, namely tetraethylammonium chloride, is added into the ethanol solution to prepare an electrolyte solution; tantalum sheets are adopted as an anode electrode, platinum is adopted as a cathode electrode, and the anode electrode and the cathode electrode are placed in an electrolytic cell; the prepared electrolyte solution is placed in the electrolytic cell, theelectrode spacing between the anode electrode and the cathode electrode is well adjusted, and the anode electrode and the cathode electrode are fixed; the anode electrode and the cathode electrode areconnected to the positive pole and the negative pole of a direct-current power source separately, electrolytic corrosion is started, and the spongy tantalum sheets are obtained. No indissolvable matter is generated to deposit on the spongy tantalum sheets in the electrolytic corrosion process. The prepared spongy tantalum sheets are single in composition, high in purity, high in porosity and large in specific surface area. The electrolyte solution is simple in composition and easy to control, compositions are unlikely to be decomposed, and the process is stable.

Description

technical field [0001] The invention relates to the technical field of tantalum sheet preparation, in particular to a method for preparing a sponge-like tantalum sheet. Background technique [0002] Metal tantalum has a series of excellent properties such as high melting point, good cold working performance, high chemical stability, strong resistance to liquid metal corrosion, and large dielectric constant of the surface oxide film. It is widely used in electronics, metallurgy, steel, chemical industry, hard alloy, atomic energy, It has important applications in high-tech fields such as superconducting technology, automotive electronics, aerospace, medical and health care, and scientific research. However, due to the high melting point of tantalum, the prepared material has low porosity, uneven pore size and high closed porosity, and the produced tantalum sheet has low porosity, uneven pore size, and small specific surface area, which affects normal use. . [0003] At pres...

AI Technical Summary

Problems solved by technology

Among them, the spongy tantalum sheet prepared by vapor deposition has the characteristics of high volume porosity, low elastic modulus and high surface friction coefficient, but the process requires strict operating conditions, slow deposition speed, and high production cost. Soluble metal, its evaporation is very difficult

In addition, the manufacturing method of laser cladding of sponge-like tantalum sheet workpieces has the advantages of high energy controllability, narrow processing heat-affected zone, and high processing efficiency, which can better adapt to the flexible manufacturing environment, but it requires laser cladding and cutting, resulting in cost greatly increased, limiting its wide application

Images