发明授权
- 专利标题： Process for increasing the corrosion resistance of nitrided structural parts made of iron material
- 专利标题（中）： 提高由铁材制成的氮化结构件的耐腐蚀性的工艺
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申请号： US177797申请日： 1980-08-13
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公开(公告)号： US4292094A公开(公告)日： 1981-09-29
- 发明人: Helmut Kunst , Christian Scondo
- 申请人： Helmut Kunst , Christian Scondo
- 申请人地址： DEX Frankfurt
- 专利权人： Degussa Aktiengesellschaft
- 当前专利权人： Degussa Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt
- 优先权： DEX2934113 19790823
- 主分类号： C23C8/34
- IPC分类号： C23C8/34 ; C23C8/26 ; C23C8/58 ; C23C22/02 ; C23C22/72 ; C23F7/04
摘要：
To increase the corrosion resistance of nitrided structural parts made of iron materials which are useful for all types of iron and steel there is carried out an oxidation treatment in connection with the nitriding process. The oxidation treatment is carried out for 15 to 50 minutes in an oxidizing salt bath. The salt bath preferably consists of alkali hydroxides with 2 to 20% of alkali nitrates.
公开/授权文献
- US6129966A Image-receiving sheet 公开/授权日：2000-10-10
信息查询
IPC分类:
