公开(公告)号：US20120028031A1

公开(公告)日：2012-02-02

申请号：US13186589

申请日：2011-07-20

申请人： Shizuka YAMAGUCHI ,  Kazutaka Okamoto ,  Noboru Baba ,  Yuji Yamanishi ,  Tadayuki Tsutsui

发明人： Shizuka YAMAGUCHI ,  Kazutaka Okamoto ,  Noboru Baba ,  Yuji Yamanishi ,  Tadayuki Tsutsui

IPC分类号： B32B3/26

CPC分类号： C22C38/12 ,  B22F7/06 ,  C21D1/06 ,  C21D1/74 ,  C21D2251/02 ,  C22C33/02 ,  C22C38/04 ,  C22C38/08 ,  C23C14/024 ,  C23C14/025 ,  C23C14/0605 ,  C23C16/0218 ,  C23C16/0272 ,  C23C16/0281 ,  C23C16/26 ,  Y10T428/24999

摘要： The present invention provides an iron-based sintered material in which a rolling contact fatigue strength is improved. In an iron-based sintered material used in such an environment that a lubricating oil is sufficiently fed, a hard carbon coating is provided on a surface of a base material constructed by an iron-based sintered material alloy having a pore via a surface layer hardened by diffusion and an interlayer, and a part of the pore is not covered with the surface layer hardened by diffusion, the interlayer and the hard carbon coating, but is formed in a state of being open to the surface of the surface layer hardened by diffusion.

摘要翻译： 本发明提供了一种提高滚动接触疲劳强度的铁基烧结材料。 在用于充分进料润滑油的环境中使用的铁基烧结材料中，在由具有孔的铁基烧结材料合金构成的基体材料的表面上设置硬质碳涂层，所述铁基烧结材料合金经由表面层硬化 通过扩散和中间层，并且一部分孔不被被扩散硬化的表面层，中间层和硬碳涂层覆盖，而是以通过扩散硬化的表面层的表面开放的状态形成 。