发明申请
- 专利标题： HIGH-TOUGHNESS COBALT-BASED ALLOY AND ENGINE VALVE COATED WITH SAME
- 专利标题（中）： 高韧性钴基合金和发动机阀盖
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申请号： US13881362申请日： 2011-05-23
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公开(公告)号： US20130306019A1公开(公告)日： 2013-11-21
- 发明人: Katsunori Otobe , Shinichi Nishimura , Kazunori Kurahashi
- 申请人： Katsunori Otobe , Shinichi Nishimura , Kazunori Kurahashi
- 优先权： JP2010-250597 20101109
- 国际申请： PCT/JP2011/061747 WO 20110523
- 主分类号： F01L3/02
- IPC分类号： F01L3/02 ; C22C19/07
摘要：
A surface hardening material being excellent in impact resistance and having abrasion resistance is provided. Provided are: a high-toughness cobalt-based alloy containing 25.0 to 40.0 mass % of Cr, 0.5 to 12.0 mass % of a sum of W and/or Mo, 0.8 to 5.5 mass % of Si, and 0.5 to 2.5 mass % of B, 8.0 mass % or less of each of Fe, Ni, Mn, and Cu, and 0.3 mass % or less of C, the sum amount of Fe, Ni, Mn, and C being 10.0 mass % or less, and the remainder comprising 48.0 to 68.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.
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