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AssigneeAgency of Industrial Science & Technology, Ministry of International Trade & Industry
InventorsShoichi Kume, Haruo Yoshida, Kazutaka Suzuki, Yoshio Tasaki, Shiro Ikuta, Masamitu Ishikawa, Michihide Machida
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A sintered article of diamond is obtained by coating the surface of diamond particles with 30 to 0.1% by volume, based on the total volume of the diamond particles and aids, of at least one member selected from the group consisting of the transition metals of Groups 4a, 5a, and 6a in the Periodic Table of Elements and boron and silicon, and sintering the coated diamond particles under conditions of high pressure and high temperature, which sintered article consists of 70 to 99.8% by volume of diamond and 30 to 0.2% by volume of the carbide of the coating substance. A method for the production of the sintered article of diamond is also disclosed.
A method for the production of a sintered article of diamond, which comprises (i) uniformly coating, by one method selected from the group consisting of ion sputtering and ion plating, the surface of diamond particles with at least one member selected from the group consisting of the transition metals of Groups 4a, 5a, and 6a in the Periodic Table of Elements, boron, and silicon, to obtain coated diamond particles provided with 30 to 0.1% by volume of a coating layer;
Dependencies are inferred from the claim text.