Atomic-scale flattening of Ni–Cr alloy surfaces by electrochemical passivation treatments

Ni–Cr alloys were electrochemically passivated in sulphuric acid solutions, generating atomically flat oxide surfaces on the terraces of the resulting passive films. High resolution ex-situ scanning tunnelling microscopy revealed a nanocrystalline structure for the passive film, with a tendency for...

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Bibliographic Details
Published in:Current applied physics 2004-04, Vol.4 (2), p.156-159
Main Authors: Nanjo, H., Laycock, N.J., Deng, H., Ishikawa, I., Sanada, N.
Format: Article
Language:English
Subjects:
Atomic scale
Electrochemical passivation
Flat
Ni–Cr
Oxide
Scanning tunnelling microscopy
Surface structure
Terrace
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Summary:Ni–Cr alloys were electrochemically passivated in sulphuric acid solutions, generating atomically flat oxide surfaces on the terraces of the resulting passive films. High resolution ex-situ scanning tunnelling microscopy revealed a nanocrystalline structure for the passive film, with a tendency for the grain size to decrease with increasing Cr content in the alloy.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2003.10.020