发明授权
US4230751A Treating composition, forming a mixed-carbide layer of Va-Group elements
and of chromium on a ferrous-alloy surface and resulting product
失效
处理组合物，在铁合金表面上形成Va族组分和铬的复合碳化物层和所得产物
- 专利标题： Treating composition, forming a mixed-carbide layer of Va-Group elements and of chromium on a ferrous-alloy surface and resulting product
- 专利标题（中）： 处理组合物，在铁合金表面上形成Va族组分和铬的复合碳化物层和所得产物
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申请号： US931953申请日： 1978-08-08
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公开(公告)号： US4230751A公开(公告)日： 1980-10-28
- 发明人: Noboru Komatsu , Tohru Arai , Hironori Fujita
- 申请人： Noboru Komatsu , Tohru Arai , Hironori Fujita
- 申请人地址： JPX Nagoya JPX Aichi
- 专利权人： Kabushiki Kaisha Toyota,Chuo Kenkyusho
- 当前专利权人： Kabushiki Kaisha Toyota,Chuo Kenkyusho
- 当前专利权人地址： JPX Nagoya JPX Aichi
- 优先权： JPX52-95571 19770811
- 主分类号： C23C10/26
- IPC分类号： C23C10/26 ; C23C9/16 ; B32B15/18 ; C25D3/66
摘要：
A method and treating material are presented for forming a mixed-carbide layer of at least one Va-Group element and of chromium on the surface of a carbon-containing ferrous-alloy material. A molten treating bath is prepared by introducing one or more Va-Group elements in oxide form and chromium in metal or alloy form or by introducing one or more Va-Group elements in metal or alloy form and at least one chromium oxide into a molten bath composed of boric acid, of at least one borate or of a mixture thereof. An article of carbon-containing ferrous alloy is immersed and maintained in the molten treating bath until a mixed-carbide layer is formed on its surface. The mixed-carbide layer formed on the surface of the article is very smooth, wear resistant and high-temperature-oxidation resistant.
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