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Article: Japanese Inventors Develop Surface-Coated Cermet Cutting Tool
- Article from:
- US Fed News Service, Including US State News
- Article date:
- October 30, 2008
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ALEXANDRIA, Va., Oct. 30 -- Hisashi Honma, Akira Osada, Eiji Nakamura and Takuya Hayahi, all from Naka-gun, Japan, have developed a cermet cutting tool.
According to the abstract released by the U.S. Patent & Trademark Office: "A surface-coated cermet cutting tool is formed by depositing on a surface of a tool substrate a hard-coating layer composed of the following layers the lower layer is composed of one or more layers of TiC, TiN, TiCN, TiCO, and TiCNO and has a total average layer thickness in the range of 3 to 20 .mu.m, and (b) the upper layer is an aluminum oxide layer having an .alpha.-type crystal structure when chemically deposited and has an average layer thickness in the ...