TY - JOUR
T1 - Effects of Y2O3 addition on the sinterability and microstructure of mullite (part 1) - phase transformation and sinterability -
AU - Hwang, Chii Shyang
AU - Fang, Der Yang
PY - 1992
Y1 - 1992
N2 - The effect of addition of Y2O3 on the sinterability and microstructure of mullite was studied by differential thermal analysis, X-ray powder diffraction, scanning and transmission electron microscopy, and dilatometry. The mullite powder compacts containing 2-10 wt% Y2O3 were sintered at 1500°C in air. The solid state reaction of Y2O3 and mullite during the sintering process produced some crystalline phases of yittrium silicates and α-Al2O3. The product phases were dependent on the amount of Y2O3 addition. The yittrium silicate and Al2O3 melted into a liquid phase at higher sintering temperature, which enhanced the sinterability of mullite powders. During the furnace cooling process, the liquid phase crystallized, and different crystalline phases were obtained depending on the amount of Y2O3.
AB - The effect of addition of Y2O3 on the sinterability and microstructure of mullite was studied by differential thermal analysis, X-ray powder diffraction, scanning and transmission electron microscopy, and dilatometry. The mullite powder compacts containing 2-10 wt% Y2O3 were sintered at 1500°C in air. The solid state reaction of Y2O3 and mullite during the sintering process produced some crystalline phases of yittrium silicates and α-Al2O3. The product phases were dependent on the amount of Y2O3 addition. The yittrium silicate and Al2O3 melted into a liquid phase at higher sintering temperature, which enhanced the sinterability of mullite powders. During the furnace cooling process, the liquid phase crystallized, and different crystalline phases were obtained depending on the amount of Y2O3.
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U2 - 10.2109/jcersj.100.1159
DO - 10.2109/jcersj.100.1159
M3 - Article
AN - SCOPUS:0026923007
VL - 100
SP - 1159
EP - 1164
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1165
ER -