发明名称 |
AQUEOUS REACTION SOLUTION AND METHOD OF PASSIVATING WORKPIECES HAVING ZINC OR ZINC ALLOY SURFACES |
摘要 |
For producing corrosion resistant yellow passivate layers on zinc and zinc alloy surfaces, an aqueous reaction solution is utilized that contains trivalent chromium ions, at least one acid as well as at least one heteroaromatic compound selected from the group comprising nicotinic acid, the salts and derivatives thereof.
|
申请公布号 |
CA2624215(C) |
申请公布日期 |
2013.07.02 |
申请号 |
CA20072624215 |
申请日期 |
2007.01.23 |
申请人 |
ATOTECH DEUTSCHLAND GMBH |
发明人 |
CAPPER, LEE;NOACK, ANDREAS |
分类号 |
C23C22/53;C23C22/17;C23C22/34;C23C22/84 |
主分类号 |
C23C22/53 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|