发明名称 |
Stainless steel acid treatment |
摘要 |
The invention includes a method for cleaning and passivating a stainless steel surface comprising: 1) contacting the surface with 1548 ml/liter of an acid formulation comprising between about 1 and 60% acid component, about 1-15% surfactant, and between about 39 and 98% water; 2) maintaining contact to dislodge and remove residue from the surface; 3) continuing contact to complex free iron ions liberated from the surface to form an oxide film on the surface; and 4) continuing contact to precipitate the complexed ions into the oxide film.
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申请公布号 |
US5766684(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19970843727 |
申请日期 |
1997.04.21 |
申请人 |
CALGON VESTAL, INC. |
发明人 |
SHAH, SADIQ;KIRCHNER, FRED |
分类号 |
B05D1/18;C23C22/50;C23G1/08;H01L21/304;(IPC1-7):B05D3/00 |
主分类号 |
B05D1/18 |
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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