Diamond tool and method of producing the same

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United States of America Patent

PATENT NO 5209613
SERIAL NO

07772241

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A diamond tool which generates little vibrations, can be used in high temperature environments and can be produced with excellent yield has at least a shank portion (2) in contact with a diamond chip (1) and formed from a reaction-sintered silicon carbide material having a thermal expansion coefficient close to that of the diamond chip by using a diamond granule, and a method for producing the diamond tool which comprises contacting a diamond chip with an ingredient layer mixed with a diamond granule and a carbonaceous source, placing a metallic silicon powder on the surface of the layer, and then reaction-sintering it in vacuum or in a non-oxidizing atmosphere by heating, thereby forming a reaction-sintered silicon carbide material having a coefficient of thermal expansion close to that of a diamond chip, at least, in the shank portion at which a diamond chip is in contact.

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Patent Owner(s)

Patent OwnerAddress
NIHON CEMENT CO LTD (50%) A CORPORATION OF JAPAN6-1 1-CHOME OHTEMACHI CHIYODA-KU TOKYO
NIHON CERATEC CO LTD (50%) A CORPORATION OF JAPAN5 AKE-DORI 3-CHOME IZUMI-KU SENDAI CITY MIYAGI-PREF 981-31

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishio, Noriyuki Sendai, JP 1 5

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