アルミニウムの硫酸浴陽極酸化における増粘剤添加の影響
1994 年 45 巻 5 号 p. 515-518
詳細
1994 年 45 巻 5 号 p. 515-518
Baths composed of sulfuric acid (1.5M) were prepared on containing alcohols, ketones and aldehydes as viscosity improvers in amounts ranging from 50∼150mL/L. Anodization was carried out for 30min at a current density of 2A/dm2 at 10°C.
It was found that sulfate mobility and the incorporation of sulfate in the coatings decreased with increasing concentration of the viscosity improvers. The coatings formed in baths containing were harder than those formed in baths without viscosity improvers.
The C. R. value was higher for coatings formed in baths containing alcohols than for coatings formed in H2SO4, solution, but lower for coatings formed in baths containing ketones or aldehydes.
