| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1471255 | Corrosion Science | 2009 | 8 Pages |
Abstract
A gradient NiCoCrAlSiY coating consisting of Al-enriched outer zone and Cr-enriched internal zone was prepared using arc ion plating method and subsequent annealing treatment. Isothermal oxidations were performed at 1000 °C and 1100 °C in static air. The results confirmed an enhanced performance for the gradient NiCoCrAlSiY coating in contrast to the conventional NiCoCrAlSiY, due to the high-Al content and the in-situ Cr(Re, W)-rich diffusion barrier which exists in the gradient coating. The degradation mechanisms for the two coatings and the formation mechanism for the diffusion barrier are discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
C.Z. Xu, S.M. Jiang, Z.B. Bao, J. Gong, C. Sun,