发明名称 |
Verfahren zur Herstellung einer dekorativen Oberfläche |
摘要 |
Production of a decorative surface comprises processing a metallic base material forming a submicroscopic thin oxide layer by etching; and deforming and heat treating to cause a specific recrystallization behavior with a corresponding grain growth. Preferred Features: The surface is mechanically sealed before etching. A mixture of concentrated H2SO4 and 40 % HF is used as the etchant at a temperature of 25 deg C for 4 minutes. An aluminum oxide protective layer is applied and post-sealed with water vapor. |
申请公布号 |
DE10049579(B4) |
申请公布日期 |
2006.09.14 |
申请号 |
DE2000149579 |
申请日期 |
2000.10.06 |
申请人 |
AUDI AG |
发明人 |
KLOSE, PETER;WETZEL, PETER |
分类号 |
B44C1/22;C22F1/04;C23C14/08;C23F1/00;C23F1/02;C23F17/00;C25D11/18 |
主分类号 |
B44C1/22 |
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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