Patent ID: 8642187
Filing Date: 2014-02-04
Classification: C23C,C25D,H05K,Y10T

Abstract:
1. A structural member comprising: a metal base member comprising aluminum, an aluminum film having a purity of 99.99 wt % or more, the film formed to a thickness of 0.2 μm to 1.0 μm on a surface of the metal base member by CVD or sputtering, and a nonporous amorphous aluminum oxide passivation film formed by anodizing the aluminum film, wherein the nonporous amorphous aluminum oxide passivation film is formed by anodizing a surface of the aluminum film in an anodizing solution of pH 4 to 10 which comprises a nonaqueous solvent that dissolves water and that has a dielectric constant less than a dielectric constant of water.