| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1474123 | Journal of the European Ceramic Society | 2015 | 10 Pages |
Abstract
Plasma sprayed lanthanum magnesium hexaluminate (LaMgAl11O19, LaMA) coating degraded by molten V2O5 at 710–1050 °C was studied. LaVO4, Mg0.388Al2.408O4 and γ-Al2O3 were the main corrosion products at 710 °C and 800 °C, while the corrosion products were LaVO4, MgAl2O4, α-Al2O3 at 950 °C and 1050 °C. AlVO4 as an important intermediate corrosion product had strong influences on the formations of γ- or α-Al2O3 at different temperature regions. Recrystallization and hot corrosion happened to LaMA coating simultaneously at 950 °C and 1050 °C. However, at 800 °C, LaMA coating underwent the most serious degradation along the coating thickness direction due to the presence of amorphous phase.
Related Topics
Physical Sciences and Engineering
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Ceramics and Composites
Authors
Xiaolong Chen, Xueqiang Cao, Binglin Zou, Jun Gong, Chao Sun,