The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 1990
Filed:
Nov. 02, 1988
Hironori Yoshimura, Tokyo, JP;
Mitsubishi Kinzoku Kabushiki, Tokyo, JP;
Abstract
A method of manufacturing a surface-coated TiCN-base cermet material for inserts of cutting tools. A substrate of a TiCN-base cermet is prepared. Then, a hard surface layer is coated over surfaces of the substrate, the layer being formed of one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group. In coating the hard surface layer, an ion plating method is applied under the conditions that the reaction temperature is 700.degree.-1000.degree. C., the voltage applied on the substrate (-)100-(-)1000 volts, and the pressure of the reaction atmosphere 1.times.10.sup.-5 -2.times.10.sup.-4 torr. The hard surface layer thus obtained has a mean thickness within a range from 0.5 to 10 microns and a mean grain size of not more than 0.05 microns.