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Hot corrosion behavior of LaTi2Al9O19 ceramic exposed to V2O5 at 700–950°C were investigated in order to better understand the corrosion resistance of LaTi2Al9O19 as a promising thermal barrier coating material. Results indicate that the degradation processes were significantly temperature dependent. At 700°C, AlVO4, LaVO4 and TiO2 were the main corrosion products, while AlVO4 partially decomposed...
Hot corrosion studies of La2(Zr0.7Ce0.3)2O7 (LZ7C3) thermal barrier coating (TBC) ceramics by calcium magnesium aluminosilicate (CMAS) glass were conducted at temperatures ranging from 1200 to 1300°C. Results indicate that CMAS rapidly dissolves LZ7C3 and precipitates apatite phase based on (La,Ca)4(La, Ce)6(SiO4)6O2, fluorite ZrO2 and other crystalline phases. Those reaction products tend to form...
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