Invention Grant
- Patent Title: Cermet and coated cermet
- Patent Title (中): 金属陶瓷和涂层金属陶瓷
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Application No.: US13255597Application Date: 2010-03-10
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Publication No.: US08765272B2Publication Date: 2014-07-01
- Inventor: Keitaro Tamura , Daisuke Takesawa , Hiroki Hara , Kozo Kitamura , Yasuro Taniguchi , Koji Hayashi , Akihiro Matsumoto , Sung-Pyo Cho
- Applicant: Keitaro Tamura , Daisuke Takesawa , Hiroki Hara , Kozo Kitamura , Yasuro Taniguchi , Koji Hayashi , Akihiro Matsumoto , Sung-Pyo Cho
- Applicant Address: JP Fukushima
- Assignee: Tungaloy Corporation
- Current Assignee: Tungaloy Corporation
- Current Assignee Address: JP Fukushima
- Agency: Womble Carlyle
- Priority: JP2009-056653 20090310
- International Application: PCT/JP2010/053941 WO 20100310
- International Announcement: WO2010/104094 WO 20100916
- Main IPC: B23B9/00
- IPC: B23B9/00

Abstract:
A cermet has a hard phase which contains W and nitrogen, and includes at least one selected from a carbide, nitride and carbonitride of a metal having Ti as a main component, and a binder phase having an iron group metal as a main component. A W amount contained in the whole cermet is 5 to 40% by weight, an interfacial phase including a complex carbonitride with a larger W amount than a W amount of the hard phase being present between grains of the hard phase, and when a W amount contained in the interfacial phase based on the whole metal element is represented by Wb (atomic %), and a W amount contained in the hard phase based on the whole metal element is represented by Wh (atomic %), then, an atomic ratio of Wb to Wh (Wb/Wh) is 1.7 or more. The cermet is excellent in fracture resistance and wear resistance.
Public/Granted literature
- US20120003466A1 Cermet and Coated Cermet Public/Granted day:2012-01-05
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