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High temperature corrosion behaviour of a gradient NiCoCrAlYSi coating I: Microstructure evolution
- Source :
-
Corrosion Science . May2010, Vol. 52 Issue 5, p1746-1752. 7p. - Publication Year :
- 2010
-
Abstract
- Abstract: A gradient NiCoCrAlYSi coating was prepared by a combined method of arc ion plating and subsequent diffusion treatment. The microstructure of the gradient coating was investigated in the as-annealed condition and after oxidation at 1000°C. During the oxidation, an in situ diffusion barrier composed of Cr(W)-rich σ phases was formed in the interdiffusion zone, resulting in an effective inhibition of inward diffusion of Al. The formation of the in situ diffusion barrier layer is also discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0010938X
- Volume :
- 52
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Corrosion Science
- Publication Type :
- Academic Journal
- Accession number :
- 48730038
- Full Text :
- https://doi.org/10.1016/j.corsci.2010.01.025