Ceramic cathode composite material and preparation method thereof

Abstract

The invention relates to a ceramic cathode composite material and a preparation method thereof. The ceramic cathode composite material is prepared from, by mass, 3-6% of chromic oxide, 1-6% of aluminum oxide, 2-6% of sodium fluoride, 3-5% of albite powder, 0.1-0.45% of lanthanum oxide, 2-6% of graphite, 2-5% of cullet and the balance silicon carbide. The preparation method of the ceramic cathode composite material includes the steps of ball milling, pressing on a tablet press, sintering in a resistance furnace and the like. According to the material, silicon carbide serves as a matrix, various conductive ions such as lanthanum, chromium and aluminum are distributed on the matrix, the uniform conductive structure is achieved, and the strong structure is achieved. Graphite and silicon carbide are matched, the antifriction performance of the material can be improved, and the conductivity of an electrode is also guaranteed. The material has good stability and practicality, and can be widely applied to the fields of batteries and the like.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a ceramic cathode composite material and a preparation method. Background technique [0002] Materials made of metal and ceramic raw materials have some advantages of both metal and ceramics, such as the toughness, high thermal conductivity and good thermal stability of metals, and the high temperature resistance, corrosion resistance and wear resistance of ceramics and other characteristics. [0003] The preparation method of the ceramic cathode composite material currently disclosed in the prior art, such as the preparation method of the titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material in the patent CN201410328041.3, relates to a preparation method of the cathode material, which solves the existing The technical problem of the poor electrical conductivity of the cathode prepared by using ceramic powder is to mix the ceramic phase with the metal...

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Problems solved by technology

[0003] The preparation method of the ceramic cathode composite material currently disclosed in the prior art, such as the preparation method of the titanium aluminum metal-hexagonal boron nitride ceramic conductive cathode material in the patent CN201410328041.3, relates to a preparation method of the cathode material, which solves the existing The technical problem of the poor electrical conductivity of the cathode prepared by using ceramic powder is to mix the ceramic phase with the metal phase, pour it into the mold, heat the mold, press and form it, and obtain a metal-ceramic composite billet. After cooling with the air, use a forging press. The ceramic composite billet is taken out from the mold, air-cooled to room temperature, then placed in a vacuum brazing furnace, and then turned to a billet with a diameter of 43 mm, and the billet is put into the mold again, and held on a 200T forging press for 20 minutes. Titanium Aluminum Metal-Hexagonal Boron Nitride Ceramic Conductive Cathode Material

However, the friction coefficient of the material prepared by this invention is not small enough, so it is necessary to design an improved method for preparing ceramic cathode composite materials

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