Anodizing of magnesium alloy in KOH-Al(OH)3 solutions

Matsufumi TAKAYA
1987 Keikinzoku/Journal of Japan Institute of Light Metals  
Anodic polarization behaviors of magnesium in KOH solutions containing Al (OH) 3, KF and Na3PO4 were examined by the use of potentiostat technique. The depth profile of aluminum distribution in coatings was investigated by secondary ion mass spectrometry. Film composition was measured by X-ray diffraction. Formation of passive coatings in KF added solution requires lower current density. Aluminum distribution in coatings with break down is denser than that in passive coatings. The coating with
more » ... . The coating with break down is composed of a mixture of MgO and MgAl2O4.
doi:10.2464/jilm.37.581 fatcat:w57uzplbkrfvjlhsizdbx3ehki