不同Y2O3含量的YSZ块体材料在模拟海洋环境下的腐蚀行为研究

宋健, 周文晖, 王金龙, 孙文瑶, 陈明辉, 王福会

Corrosion Behavior of Block Materials of Yttria Stabilized Zirconia with Different Content of Y2O3 in Marine Environment

SONG Jian, ZHOU Wenhui, WANG Jinlong, SUN Wenyao, CHEN Minghui, WANG Fuhui

图5 YSZ在低温水蒸气环境中的腐蚀过程示意图

Fig.5 Schematic diagram of the corrosion process of YSZ in low temperature vapor environment: (a) in the prepared YSZ block, Y atoms dissolve into ZrO2 crystals and forming a stable structure. The surrounding crystals of ZrO2 are stabilized in the form of t-phase; (b) as the LTD experiments process, the water vapor induced the stable structure of YSZ to fail and the surrounded crystals of ZrO2 change to m-phase; (c) with the extension of corrosion time, almost all phase transformation processes are close to the end. Most of the crystals of ZrO2 present with m-phase