窒化ケイ素焼結体の模擬粒界相としてのY2O3-Al2O3-SiO2ガラスの特性 (第2報)
耐高温高圧水特性
1991 年 99 巻 1155 号 p. 1150-1152
詳細
1991 年 99 巻 1155 号 p. 1150-1152
The leaching behavior of Y2O3-Al2O3-SiO2 glasses was studied in connection with the hydrothermal corrosion of Si3N4-Y2O3/Al2O3 ceramics. Leaching tests were conducted with the glass blocks under hydrothermal conditions at 300°C for 1 to 10 days. It was found that the weight loss of the glasses is less than 0.8mg/cm2 after 10 days and the durability of the glasses is higher than that of SiO2 glass, Corning-1723 glass and Si3N4-Y2O3/Al2O3 ceramics. It was considered that the higher durability of the glass under hydrothermal conditions is due to the lower leach rates of Y2O3 and Al2O3.
