| 摘要 |
<p>The present invention is applied to exterior and interior materials, external cases, housings, and bodies, etc., made of metal, in cellular phones, laptop computers, various electronic devices, vehicles, aircrafts, and ships, etc., and is capable of improving durability, corrosion resistance and coating adhesion, etc. while increasing metallic texture through surface treatment of forming a passivation layer, a heterogeneous metallic protective layer, and a coating protective layer, etc. on the surface and structure pattern of an easily oxidized metal base such as magnesium, magnesium alloy, aluminum, aluminum alloy, titanium, titanium alloy, copper, copper alloy, silver, silver alloy, etc. The present invention relates to a surface treatment method for a metal base made of any one among magnesium, magnesium alloy, aluminum, and aluminum alloy, the surface treatment method comprising the steps of: heating an alcohol-based or ketone-based passivation solution at a heat temperature for passivation treatment; and forming a passivation layer on the surface of the metal base through a reaction with the passivation solution in the state that the metal base is dipped into the alcohol-based or ketone-based passivation solution heated at the heat temperature for passivation treatment.</p> |
