发明名称 |
Protective coating having adhesion improving characteristics |
摘要 |
There is provided a method of treating a copper or copper alloy substrate to provide improved resistance to both oxidation and to chemical attack. The substrate is immersed in an aqueous solution containing both chromium (VI) ion and phosphate ions. The treatment is particularly effective for protecting imaged printed circuit boards during storage, handling and use. |
申请公布号 |
US5300158(A) |
申请公布日期 |
1994.04.05 |
申请号 |
US19920889036 |
申请日期 |
1992.05.26 |
申请人 |
OLIN CORPORATION |
发明人 |
CHEN, SZUCHAIN;YUKOV, NINA |
分类号 |
C23C22/33;H01L23/495;H05K3/28;H05K3/38;(IPC1-7):C25D7/06 |
主分类号 |
C23C22/33 |
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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