不同Y_(2)O_(3)含量的YSZ块体材料在模拟海洋环境下的腐蚀行为研究  

Corrosion Behavior of Block Materials of Yttria Stabilized Zirconia with Different Content of Y_(2)O_(3) in Marine Environment

作　　者：宋健[1] 周文晖 王金龙[1] 孙文瑶 陈明辉[1] 王福会[1] SONG Jian;ZHOU Wenhui;WANG Jinlong;SUN Wenyao;CHEN Minghui;WANG Fuhui(Corrosion and Protection Division,Shenyang National Laboratory for Materials Science,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学沈阳材料科学国家研究中心东北大学联合研究分部,沈阳110819

出　　处：《中国腐蚀与防护学报》2023年第2期359-364,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51801021);工业和信息技术部民机专项(MJ-2017-J-99);教育部中央高校基本科研业务费(N2102015)。

摘　　要：针对钇稳定氧化锆(YSZ)材料在海洋环境中易腐蚀的问题,使用放电等离子烧结技术分别制备了5%和12%(质量分数) Y2O_(3)稳定的YSZ块体材料,并对块体材料在高低温交替的水蒸气环境中进行腐蚀实验,模拟其作为热障涂层面层材料在海洋环境下使用时的腐蚀情况。分析了YSZ在低温水蒸气老化和高温烧结的交替腐蚀过程中,力学性能的变化以及裂纹的形成和扩展行为。结果表明:对于5%Y_(2)O_(3)含量的5YSZ在模拟海洋环境下抗弯强度损失严重,14 d的腐蚀实验使得抗弯强度下降了91.4%。然而对于高Y2O_(3)含量的12YSZ材料,其在相同环境下腐蚀相同时间,抗弯强度未有明显变化。Y2O_(3)含量高的YSZ具有更强的稳定性,更适合在海洋环境使用。In order to solve the corrosion troubles of Yttria Stabilized Zirconia(YSZ) materials in the marine environment, two YSZ block materials with 5% and 12%(mass fraction) Y_(2)O_(3)were prepared by powder metallurgy with a discharge plasma sintering furnace, and their corrosion performance was assessed via alternative high-and low-temperature water vapor corrosion test, aiming to simulate the marine corrosive environment, encountered for thermal barrier coatings of aero engine in service. The mechanical properties and crack formation and propagation behavior of YSZ during the alternating corrosion process of low temperature steam aging and high temperature sintering were analyzed. The results of bending strength curve show that the bending strength of 5YSZ decreases by 91.4% after 14 d of corrosion test. However, for YSZ with higher Y_(2)O_(3)content of 12%, its bending strength does not change significantly after tested in the same environment for the same time. Therefore, the YSZ with high Y_(2)O_(3)content has stronger stability and is more suitable for marine environment.

关 键 词：钇稳定氧化锆(YSZ) ZrO_(2) 热障涂层(TBCs) 低温老化 氧空位 

分 类 号：TG172[金属学及工艺—金属表面处理]