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公开(公告)号:US4169741A
公开(公告)日:1979-10-02
申请号:US884871
申请日:1978-03-09
申请人: Karl Lampatzer , Werner Rausch
发明人: Karl Lampatzer , Werner Rausch
CPC分类号: C23C22/08 , C23C2222/10
摘要: An aqueous acidic composition free of hexavalent chromium is employed to treat a metal surface. The composition contains trivalent chromium, phosphate ion and dispersed silica.
摘要翻译: 使用不含六价铬的水性酸性组合物处理金属表面。 组合物含有三价铬,磷酸根离子和分散二氧化硅。
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公开(公告)号:US4264378A
公开(公告)日:1981-04-28
申请号:US121569
申请日:1980-02-14
申请人: Dieter Oppen , Karl Lampatzer
发明人: Dieter Oppen , Karl Lampatzer
IPC分类号: B05D3/02 , C23C22/08 , C23C22/12 , C23C22/18 , C23C22/20 , C23C22/22 , C23C22/42 , C23C22/44 , C23F7/10 , C23F7/14
摘要: A chromium-free process for phosphatizing a metal surface provides for applying to the surface an aqueous acidic solution having pH 1.5 to 3.0 and containing phosphate; a metal cation of valence two or greater; molybdate, tungstate, vanadate, niobate or tantalate ions; and drying the solution on the surface without rinsing.
摘要翻译: 用于磷酸化金属表面的无铬方法提供向表面施加pH为1.5至3.0并含有磷酸盐的酸性水溶液; 化合价为2价以上的金属阳离子; 钼酸盐,钨酸盐,钒酸盐,铌酸盐或钽酸盐离子; 并在表面上干燥溶液而不冲洗。
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