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:
Oct. 31, 1995
Filed:
May. 20, 1994
Akira Egami, Akashi, JP;
Masaya Ehira, Akashi, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
A cermet sintered body excellent in wear resistance, oxidation resistance and toughness, which is suitable for cutting tools. The cermet sintered body includes: a hard dispersion phase in an amount of from 70 to 95 wt. %, which contains TiC and/or Ti(C, N) and carbides (excluding TiC) and/or nitrides of one or more kinds selected from a group consisting of elements in IVa, Va, and VIa groups of the periodic system, and a binder phase in an amount of from 5 to 30 wt. %, which contains one kind or two or more kinds of iron family elements. Moreover, the average particle size of a raw powder of TiC and/or Ti(C, N) is in the range of 1.0 .mu.m or less, and TiC and/or Ti(C, N) are directly dissolved in a solid state in the carbides (excluding TiC) and/or nitrides during sintering, to form a hard dispersion phase. The hard dispersion phase thus obtained mainly contains solid-solutions without any structure having a core, and which has a uniform distribution of composition.