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:
Aug. 30, 2011
Filed:
Jun. 13, 2006
Tomoaki Shindo, Nagoya, JP;
Atsushi Komura, Kiyosu, JP;
Hiroaki Takashima, Komaki, JP;
Toshiyuki Taniuchi, Toride, JP;
Masafumi Fukumura, Toride, JP;
Kei Takahashi, Tsukuba, JP;
Tomoaki Shindo, Nagoya, JP;
Atsushi Komura, Kiyosu, JP;
Hiroaki Takashima, Komaki, JP;
Toshiyuki Taniuchi, Toride, JP;
Masafumi Fukumura, Toride, JP;
Kei Takahashi, Tsukuba, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A cermet insert having a structure composed of a hard phase and a binding phase and, as a sintered body composition, containing Ti, Nb and/or Ta, and W in a total amount of Ti in terms of carbonitride, Nb and/or Ta in terms of carbide and W in terms of carbide of 70 to 95 wt. % of an entirety of the microstructure, and containing W in terms of carbide in an amount of 15 to 35 wt. % of the entirety of the microstructure, the sintered body composition further containing Co and/or Ni. The hard phase has one or two or more of the phases: (1) a first hard phase of a core-having structure whose core portion contains a titanium carbonitride phase and a peripheral portion containing a (Ti, W, Ta/Nb)CN phase, (2) a second hard phase of a core-having structure whose core portion and peripheral portion both contain a (Ti, W, Ta/Nb)CN phase, and (3) a third hard phase of single-phase structure including a titanium cabonitride phase. Moreover, the titanium carbonitride phase includes a W-rich phase unevenly distributed in the titanium carbonitride phase.