Thermostable polycrystalline diamond body, method and mold for producing same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4643741
SERIAL NO

06681549

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Abstract

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A thermostable polycrystalline diamond body is produced by pre-treating the diamond crystals with molten base or salt, mixing the pre-treated diamond crystals with silicon powder or a blend of silicon and one or more substances, subjecting the mixture to a combination of high-pressure and high-temperature and maintaining the pressure and temperature for a period of time. The thermostable polycrystalline diamond body is characterized in having diamond crystals uniformly distributed in the body. The diamond crystals are covered by .beta.-silicon carbide and that the diamond crystals together with .beta.-silicon carbide form an uninterrupted framework throughout the entire body, the interstices of which are filled with elemental silicon or silicon-containing refractory phases. A polygonal graphite mold having walls of equal thickness useful in the production of said thermostable polycrystalline diamond body is also provided.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ZHENGZHOU RESEARCH INSTITUTE FOR ABRASIVES & GRINDING STATE COMMISSIONOF MACHINERY INDUSTRYZHENGZHOU HENAN0

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Chaodong Research Institute for Abrasives & Grinding, Ministry of Machine Building, Zhengzhou, Henan, CN 2 30
Yang, Zhen Research Institute for Abrasives & Grinding, Ministry of Machine Building, Zhengzhou, Henan, CN 52 513
Yu, Hongchang Research Institute for Abrasives & Grinding, Ministry of Machine Building, Zhengzhou, Henan, CN 2 38
Zai, Zhongqing Research Institute for Abrasives & Grinding, Ministry of Machine Building, Zhengzhou, Henan, CN 1 30

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