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1050 °C isothermal oxidation behavior of detonation gun sprayed NiCrAlY coating
- Source :
-
Surface & Coatings Technology . Dec2002, Vol. 161 Issue 2/3, p302. 4p. - Publication Year :
- 2002
-
Abstract
- NiCrAlY coating was deposited on a single crystal Ni-base superalloy by detonation gun spraying. By means of XRD, SEM and EDS, isothermal oxidation behavior of the coatings at 1050 °C were studied. The results showed that detonation gun sprayed NiCrAlY coatings held a favorable oxidation resistance. Their oxidation kinetics at 1050 °C obeyed the parabolic law. α-Al2O3 scale was formed on the coating surface and kept almost intact after oxidation for 300 h. Internal oxidation led to the formation of Al2O3 at the coating/substrate interface, and needlelike (Al, N) compounds appeared in the undersurface area of the substrate. [Copyright &y& Elsevier]
- Subjects :
- *NICKEL-chromium-aluminum alloys
*HEAT resistant alloys
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 02578972
- Volume :
- 161
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Surface & Coatings Technology
- Publication Type :
- Academic Journal
- Accession number :
- 7911160
- Full Text :
- https://doi.org/10.1016/S0257-8972(02)00468-1