Effect of Y2O3 on microstructure and oxidation of chromizing coating

A Y2O3-modified chromizing coating was produced by chromizing an as-electrodeposited Ni-Y2O3 composite film using pack cementation method at 1 100 ℃ for 3 h. For comparison, chromizing was also performed under the same condition on an asdeposited Ni film without Y2O3 particles. Oxidation at 900 ℃ fo...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2008-10, Vol.18 (5), p.1122-1127
Main Author: 周月波 张海军 王永东
Format: Article
Language:English
Subjects:
氧化条件
电沉积
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Summary:A Y2O3-modified chromizing coating was produced by chromizing an as-electrodeposited Ni-Y2O3 composite film using pack cementation method at 1 100 ℃ for 3 h. For comparison, chromizing was also performed under the same condition on an asdeposited Ni film without Y2O3 particles. Oxidation at 900 ℃ for 120 h indicates that although on both two chromizing coatings chromia scales grow during oxidation, the Y2O3-modified chromizing coating exhibits an increased oxidation resistance due to the formation of thinner, denser and finer-grain scale. The effect of Y2O3 on the coating formation and the coating oxidation behavior was discussed in detail.
ISSN:1003-6326
DOI:10.1016/S1003-6326(08)60192-2