| 发明名称 |
CONTROLLED TRIVALENT CHROMIUM PRETREATMENT |
| 摘要 |
A method for forming a trivalent chromium coating on an aluminum alloy substrate includes adding a chromium-containing solution to a vessel, immersing the aluminum alloy substrate in the chromium-containing solution, immersing a counter electrode in the chromium-containing solution, and applying an electrical potential bias to the aluminum alloy substrate with respect to its equilibrium potential to form a trivalent chromium coating on an outer surface of the aluminum alloy substrate. A method for forming a trivalent chromium coating on a metal substrate includes adding a chromium-containing solution to a vessel, immersing the metal substrate in the chromium-containing solution, immersing a counter electrode in the chromium-containing solution, and modulating an electrical potential difference between the metal substrate and the counter electrode to form a trivalent chromium coating on an outer surface of the metal substrate. |
| 申请公布号 |
US2015101934(A1) |
申请公布日期 |
2015.04.16 |
| 申请号 |
US201314052719 |
申请日期 |
2013.10.12 |
| 申请人 |
Hamilton Sundstrand Corporation |
发明人 |
Dardona Sameh;Jaworowski Mark R.;Burlatsky Sergei F.;Novikov Dmitri;Chen Lei |
| 分类号 |
C25D3/06;C25D21/12;C25D5/18 |
主分类号 |
C25D3/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for forming a trivalent chromium coating on an aluminum alloy substrate, the method comprising:
adding a chromium-containing solution to a vessel; immersing the aluminum alloy substrate in the chromium-containing solution; immersing a counter electrode in the chromium-containing solution; and applying an electrical potential bias to the aluminum alloy substrate with respect to its equilibrium potential to form a trivalent chromium coating on an outer surface of the aluminum alloy substrate. |
| 地址 |
Windsor Locks CT US |
