Superfine multi-component composite ceramic powder and preparation method thereof

A multi-component composite, ceramic powder technology, applied in the field of ceramic powder materials, can solve the problems of long reaction time, difficult ultra-fine or nano product powder, and high reaction temperature, achieve short holding time, improve driving force and diffusion capacity , the effect of low synthesis temperature
CN107282937AActive Publication Date: 2017-10-24HAINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HAINAN UNIVERSITY
Publication Date
2017-10-24

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Abstract

The invention provides a preparation method of superfine multi-component composite ceramic powder. The preparation method comprises the following steps: (A) mixing a Ti source, an M source and a carbon source, and carrying out high-energy ball milling to obtain activated nano-crystalline raw material powder; and (B) subjecting the prepared activated nano-crystalline raw material powder to a carbothermal reduction reaction, so as to obtain the superfine multi-component composite ceramic powder. According to the preparation method provided by the invention, raw materials are pretreated by utilizing the ball milling operation, thereby obtaining the uniformly-mixed activated nano-crystalline raw material powder; meanwhile, the technical characteristics of spark plasma sintering are sufficiently utilized; compared with a conventional carbothermal reduction reaction, the carbothermal reduction reaction involved in the invention has the advantages that the temperature rise rate is very high, the synthesis temperature is relatively low, the heat preservation period is very short, and a powder product of which the particle size is relatively small can be easier to obtain; and the ball milling operation and the spark plasma sintering operation are ingeniously combined, thereby improving the raw material reaction driving force and diffusivity, enhancing the component reactivity, greatly lowering the synthesis temperature, and shortening the reaction period.
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Description

technical field

[0001] The invention relates to the technical field of ceramic powder materials, in particular to an ultrafine multi-component composite ceramic powder and a preparation method thereof. Background technique

[0002] Ti(C,N)-based cermet is a new type of cemented carbide material with excellent performance and a wide range of uses developed on the basis of TiC-based cermet. The tool made of this material has good hardness and wear resistance, excellent red hardness and high temperature creep resistance, and the friction coefficient between the same metal is very low, low density, good chemical stability and oxidation resistance, Suitable for high-speed cutting and dry cutting of cast iron, ordinary steel and high-hardness steel. Therefore, Ti(C,N)-based cermets can successfully replace WC-based cemented carbide in many processing situations. However, there is still a gap between the strength and toughness of Ti(C,N)-based cermets and WC-based cemented carbid...

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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