No.3（2000）5.Heat-induced cracking of anodic oxide films on aluminum - An in situ measurement of the cracking temperature -

Masashi KAYASHIMA, Masakatsu MUSHIRO

Anodic oxide films formed on aluminum, which give the material good corrosion resistance, surface hardness, and feasibility for decoration, are apt to crack on heating. This study is concerned with an in situ measurement of the cracking temperature using an acoustic emission (AE) sensor, which reveals a rise in the cracking temperature, accompanied by shortening of sealing time, lowering of bath temperature, thinning of the oxide films, and heightening of impressed voltage in the bath.

Keywords
crack, alminum, anodic coating, in situ measurement, sealing

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