Development and Oxidation of RexOy-Modified Aluminide Coating

Abstract:

Reactive reactive element oxide RexOy (Re=Ce, Y)-modified aluminide coatings have been developed by the first step of co-electrodeposition of Ni with CeO2 or Y2O3 particls on pure Ni and the subsequent step of diffusional aluminizing on electrodeposited Ni-CeO2/or Y2O3 composite films using pack cementation method at 1100OC for 4 hr. By comparison, aluminizing was also performed with the same condition on an as-deposited Ni film without RexOy particles. The oxidation in air at 900OC indicated that the RexOy (Re=Ce, Y)-modified aluminide coatings were profoundly oxidation resistance as compared to the RexOy (Re=Ce, Y)-free coatings. The effect of CeO2 or Y2O3 on the oxidation behavior is discussed in detail.

• Periodical: Advanced Materials Research (Volume 142)
• Pages: 274-278
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.142.274
• Online since: October 2010
• Authors: Jing Chong Zhang, Yue Bo Zhou
• Keywords: Annealing, Cyclic Oxidation, Electrodeposited

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