Materials Transactions Online

Transactions of the Japan Institute of Metals, Vol. 14 No. 4 (1973) pp.267-272
© 1973 The Japan Institute of Metals

Bilayered Qxide Scales Formed on Nickel

Tokihiro Ueno*

Bilayered scale of NiO is formed on not only impure but high-purity nickel by heating in air at temperatures of 900 to 1200°C for times up to 72 hr. It is found that scales consist of two layers which are metallographically and/or crystallographically different from each other. They can be classified into several types according to their metallographic and crystallographic structures.

(Received September 18, 1972)

* Department of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Japan.

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