Hot corrosion behavior of LaTi2Al9O19 ceramic exposed to vanadium oxide at temperatures of 700–950 °C in air
作者： Xin Zhou , Zhenhua Xu , Limin He , Jiaying Xu , Binglin Zou
DOI: 10.1016/J.CORSCI.2015.12.024
关键词:
摘要: Abstract Hot corrosion behavior of LaTi2Al9O19 ceramic exposed to V2O5 at 700–950 °C were investigated in order better understand the resistance as a promising thermal barrier coating material. Results indicate that degradation processes significantly temperature dependent. At 700 °C, AlVO4, LaVO4 and TiO2 main products, while AlVO4 partially decomposed 800 °C form θ-Al2O3 α-Al2O3. After exposure 950 °C, V2O5 reacted with LaVO4, α-Al2O3 final products. The hot mechanisms further discussed based on phase diagrams V2O5–Al2O3, V2O5–La2O3 V2O5–TiO2 systems.
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