| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1472091 | Corrosion Science | 2007 | 9 Pages |
Abstract
High purity, dense Cr2AlC compounds were synthesized via a powder metallurgical route, and their oxidation behavior was investigated at 1300 °C in air for up to 336 h. A thin external oxide layer formed, which consisted primarily of not Cr2O3 but Al2O3. Since Al was consumed to produce the Al2O3, Al-depletion and Cr-enrichment occurred underneath the Al2O3 layer. This led to the formation of a Cr7C3 layer containing voids. These grew during oxidation, eventually destroying the Cr7C3 layer formed on the unoxidized Cr2AlC matrix.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
D.B. Lee, Thuan Dinh Nguyen, J.H. Han, S.W. Park,