Method for producing micro-nanoscale carbide ceramics by carbon coating

A carbide, micro-nano technology, applied in the fields of carbon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of low production efficiency and high reaction temperature, and achieve large correlation, high reaction efficiency, and uniform and controllable scale. Effect
CN103449435AInactive Publication Date: 2013-12-18HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2013-12-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for producing micro-nanoscale carbide ceramics by carbon coating, relates to a method for generating the carbide ceramics by carbon thermal reduction reaction and aims at solving the problems of high reaction temperature and low production efficiency of the existing production method of the carbide ceramics. The production method of the carbide ceramics comprises the following steps: (1) fully mixing oxide raw materials with resin, performing ball milling in an alcohol type solvent, drying, and then pressing and curing to form a mixture; (2) placing the mixture into a carbonization furnace, performing heating reaction, and carbonizing and decomposing the resin to get carbon-coated oxide powder; (3) performing solid phase carbonization reaction under the protection of inert gas; (4) performing oxidation treatment on carbide powder obtained in the step (3); (5) performing acid washing treatment on the carbide powder obtained in the step (4), and then drying to get the micro-nanoscale carbide ceramics. The method for producing the micro-nanoscale carbide ceramics, disclosed by the invention, has the advantages of high reaction efficiency and lower reaction temperature, and the scale of the obtained carbide powder is uniform and controllable.
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Description

technical field

[0001] The invention relates to a method for generating carbide ceramics by carbothermal reduction reaction. Background technique

[0002] Carbide ceramic series, such as titanium carbide, tungsten carbide, boron carbide and other materials have the characteristics of stable structure, high melting point, high hardness, good chemical stability, etc., and are mainly used to manufacture cermet composite materials, heat-resistant alloys and hard alloys. The usual carbide ceramics have the characteristics of good wear resistance, good thermal conductivity, high thermal shock resistance, good chemical stability, no hydrolysis, good high temperature oxidation resistance and no reaction with acid at room temperature, and are widely used as cutting materials. Tools, polishing pastes, abrasives, anti-fatigue materials and reinforcements for composite materials. For example, 6%-30% TiC is added to WC-Co cemented carbide to form a TiC-WC solid solution with WC, which c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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