CERAMIC COATED METAL MATERIAL AND PRODUCTION METHOD THEREOF

摘要

[Problem] To enable film formation of an extremely-smooth and high-strength plasma electrolytic oxide film (ceramics film) not only on an Al-based metal, but also on a substrate of an Mg-based metal and a Ti-based metal. [Means for Solution] A power distribution pattern disposing an alternating pulse mode in which, before or after one or more positively-polarized anode-type pulse mode or one or more negatively-polarized cathode-type pulse mode, one above described anode-type pulse mode and one above described cathode-type pulse mode alternately appear is used as a pulse mode. A deformed sine waveform in which a peak position of the current waveform of the pulse mode is shifted from the pulse center position is used.