| 发明名称 |
Selective etching of nickle/iron alloys |
| 摘要 |
The present invention provides a novel method of etching nickle/iron alloy which employs a novel etchant. The novel etchant, which etches nickle/iron alloy but not copper, comprises an aqueous solution of ferric ammonium sulfate, and an acid selected from the group consisting of: sulfuric acid; phosphoric acid; and mixtures thereof.
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| 申请公布号 |
US5560840(A) |
申请公布日期 |
1996.10.01 |
| 申请号 |
US19940359218 |
申请日期 |
1994.12.19 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
COVERT, KATHLEEN L.;JIMAREZ, LISA J.;SEMKOW, KRYSTYNA W. |
| 分类号 |
C23F1/28;C23F1/44;H05K3/06;H05K3/44;(IPC1-7):C23F1/00 |
主分类号 |
C23F1/28 |
| 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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