| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10668114 | Surface and Coatings Technology | 2011 | 7 Pages |
Abstract
⺠Study of alumina scale formed after exposure (100 h/1100 °C) on bare and coated CMSX4 and modified CMSX4 with La + Y. ⺠On bare superalloys only Hf was found at the alumina grain boundaries near the metal-scale interface (no Ti). ⺠Only single Al2O3 layer formed on all coated superalloys with Hf and Y presents within the grain boundary scale. ⺠No La segregation on alumina grain boundaries on either bare or coated superalloy. ⺠Ti-rich oxide precipitates in Al2O3 scale in coated superalloys suggesting interdiffusion through the coating.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
K.A. Unocic, C.M. Parish, B.A. Pint,