发明授权
- 专利标题: Method for forming a colored coating on aluminous materials
- 专利标题(中): 在铝材上形成有色涂层的方法
-
申请号: US27582172申请日: 1972-07-27
-
公开(公告)号: US3860503A公开(公告)日: 1975-01-14
- 发明人: IKEGAYA MASASHI , SHIGETA FUMIO
- 申请人: RIKEN LIGHT METAL IND CO
- 专利权人: Riken Light Metal Ind Co
- 当前专利权人: Riken Light Metal Ind Co
- 优先权: JP5734871 1971-07-30; JP6333771 1971-08-21; JP6333871 1971-08-21; JP6333971 1971-08-21
- 主分类号: C25D11/14
- IPC分类号: C25D11/14 ; C23B9/02
摘要:
Colored oxide coatings from yellow to brown on aluminum or aluminum alloy are formed by an anodic oxidation with an aqueous solution of 0.5 - 10.0 percent by weight of oxalic acid and 0.05 - 4.0 percent by weight of an ammonium salt, a metal acetate or a metal nitrate.
信息查询