发明名称 |
Method and solution for coatiing metal surfaces with a phosphatiing solution containing water peroxide, produced metal object and use of said object |
摘要 |
The invention relates to a method for the treatment or pre-treatment of surfaces of metal objects by means of an acidic, aqueous solution containing zinc and phosphate. Said invention is characterised in that the phosphating solution contains between 0.1-10 g/L zinc, 4-50 g/L phosphate calculated as PO<SUB>4</SUB>, between 0.03-3 g/L of at least one guanidine compound comprising at least one nitro group calculated as nitroguanidine, and between 0.001-0.9 g/L hydrogen peroxide and has a temperature of less than 80° C. The invention also relates to a corresponding acidic, aqueous composition. |
申请公布号 |
ZA200509144(B) |
申请公布日期 |
2007.03.28 |
申请号 |
ZA20050009144 |
申请日期 |
2004.05.17 |
申请人 |
CHEMETALL GMBH. |
发明人 |
NITSCHKE, THOMAS;REIN, RUEDIGER;SCHOENFELDER, ECKART;SCHUBACH, PETER;SPECHT, JUERGEN |
分类号 |
C23C;C23C22/16;C23C22/18;C23C22/36;C23C22/73 |
主分类号 |
C23C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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