| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5440109 | Corrosion Science | 2016 | 10 Pages |
Abstract
A pure Al coating and Al-Si coating were prepared on the surface of the DZ125 superalloy by hot-dipping. The Al-Si coating provides better thermal oxidation resistance than that of the pure Al coating due to the formation of a more compact Al2O3 layer. The microstructure of the Al-Si coating shows a silicon-aluminium-based layer with Ta5Si3 and AlHfSi phase forms after heat treatment in argon at 850 °C. This layer is a barrier to the diffusion of oxygen and other metal elements during cyclic oxidation, which has a significant effect on the formation of the compact Al2O3 layer.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Junjie Zang, Peng Song, Jing Feng, Xiping Xiong, Rong Chen, Guangliang Liu, Jiansheng Lu,