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1. 发明授权

US5346560A Process for the treatment of ferrous metal parts to improve their corrosion resistance and friction properties simultaneously 失效
标题翻译：用于处理黑色金属部件的工艺，以同时提高其耐腐蚀性和摩擦性能
公开(公告)号：US5346560A
公开(公告)日：1994-09-13
申请号：US896928
申请日：1992-06-11
申请人： Sylvie Mournet , Joseph Wawra
发明人： Sylvie Mournet , Joseph Wawra
IPC分类号： C23C8/58 , C23C8/80 , C23C8/40
CPC分类号： C23C8/80
摘要： Precision ferrous metal parts subject to severe friction and corrosion in e are nitrided, preferably in a bath of molten salts based on CNO.sup.- cyanate ions, oxidized, preferably in baths of molten oxidizing alkaline salts, and then impregnated with a hydrophobic wax. A layer after the nitriding and oxidation steps is formed of a close-packed deep sub-layer and a porous superficial sub-layer ranging in thickness between 5 and 25 .mu.m, and exhibiting through pores ranging between 0.2 and 3 .mu.m in diameter. The impregnation wax is an organic compound with a high molecular weight between 500 and 10,000, with a surface tension in the liquid state ranging between 10 and 73 mN/m, the contact angle between the solid phase of the superficial layer and the wax in the liquid state ranging between 0 and 75.degree. C.
摘要翻译：在使用中受到严重摩擦和腐蚀的精密黑色金属部件被氮化，优选在基于CNO-氰酸根离子的熔盐浴中被氧化，优选在熔融的氧化性碱性盐的浴中，然后用疏水性蜡浸渍。氮化和氧化步骤之后的层由紧密堆积的深子层和厚度在5至25μm之间的多孔表层子层形成，并且通过直径为0.2至3μm的孔。浸渍蜡是具有500至10,000之间高分子量的有机化合物，液态的表面张力范围为10至73mN / m，表面层固相与蜡之间的接触角为液态在0和75℃之间

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