Method for preparing high-purity superfine zirconium boride powder by high-frequency plasma

A high-frequency plasma and plasma technology is applied in the field of preparing high-purity ultrafine zirconium boride powder, which can solve the problems of low activity, low cost of raw materials, and high process cost, and achieve good particle dispersibility, strong adaptability of raw materials, and high preparation technology. simple effect
CN102464323AInactive Publication Date: 2012-05-23INST OF PROCESS ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2012-05-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a high-purity superfine zirconium boride powder by high-frequency plasma. A superhigh temperature heat source provided by a high-frequency plasma arc provides enough high temperature and energy for synthetic reaction; the electrodeless heating characteristic of the high-frequency plasma guarantees the high-purity quality of the product; particles freely deposit and grow in an airflow to obtain superfine particles with good dispersibility; and a reactor is designed to achieve a purpose of regulating product particle size. The zirconium boride powder prepared by the method provided by the invention has the advantages of high purity, good dispersibility and nano-scale size and is suitable for preparing high-temperature ceramic and compound material. The high-frequency plasma technology has a short flow and is suitable for large-scale production.
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Description

technical field

[0001] The invention relates to a method for preparing high-purity ultrafine zirconium boride powder. More specifically, the invention relates to a method for preparing high-purity ultrafine zirconium boride powder by using a high-frequency plasma process. Background technique

[0002] With the development of modern technologies such as aviation, atomic energy, and new smelting technologies, more and more stringent requirements are put forward for high-temperature structural materials, requiring materials to have good high-temperature performance to adapt to harsh operating environments, such as thermal shock resistance, high-temperature strength, Corrosion resistance, oxidation resistance, etc. As a special high-temperature ceramic material, zirconium boride has high melting point, high strength, high hardness, good electrical and thermal conductivity, good flame retardancy, heat resistance, oxidation resistance, corrosion resistance and neutron capture, et...

Claims

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