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1mol% Gd2O3 and 1mol% Yb2O3 co-doped 3.5mol% Y2O3 stabilized ZrO2 (GdYb-YSZ) ceramics in metastable tetragonal (t′) structure were fabricated, and their hot corrosion behaviors were evaluated. The corrosion tests were performed at 700°C, 800°C, 900°C and 1000°C for 4h in the presence of Na2SO4+V2O5 molten salt. After corrosion, t′ phase could still be detected on the corroded surfaces and its content...
A novel molten-salt-mediated magnesiothermic reduction method was used to prepare 2H-SiC ultrafine powders by using silicon dioxide, active carbon and magnesium powders as raw materials. Phase compositions in the SiO2-2Mg-C system were thermodynamically evaluated by using the FactSage 6.2 package, and the effects of firing temperature, molar ratio of n(C)/n(Si) and amount of Mg on the synthesis of...
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