| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9803973 | Journal of Alloys and Compounds | 2005 | 5 Pages |
Abstract
The aluminized and pre-oxidized + aluminized Ti alloys, oxidized at 600 °C in air for 50 h, are studied by SEM and XRD, respectively. The results show that before oxidation the aluminide coating is composed of Al3Ti phase, but the pre-oxidation + aluminide coating consists of Al2TiO5, Al5Ti3 and Al3Ti phases. After oxidation they are both composed of Al2O3 and TiO2. A comparison study has been carried out between two samples to determine the influence of pre-oxidation upon the properties of aluminizing and oxidation resistance. The oxidation kinetics shows that the weight change of pre-oxidized + aluminized sample is less than that of the aluminized sample. The whole thickness of the pre-oxidation + aluminide scale is about half of that of the aluminide scale. The pre-oxidation affects not only the aluminizing but also the adherence between the scale and the substrate. So the pre-oxidation + aluminizing is an effective method to improve the oxidation resistance of Ti alloy.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Y.G. Zhao, W. Zhou, Q.D. Qin, Y.H. Liang, Q.C. Jiang,