不同Y<sub>2</sub>O<sub>3</sub>含量的YSZ块体材料在模拟海洋环境下的腐蚀行为研究

doi:10.11902/1005.4537.2022.070

中国腐蚀与防护学报

2023, Vol. 43

Issue (2): 359-364 CSTR: 32134.14.1005.4537.2022.070 DOI: 10.11902/1005.4537.2022.070

中国腐蚀与防护学报编委、青年编委专栏

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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

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

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

Corrosion and Protection Division, Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China

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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) Y₂O₃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%Y₂O₃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Y₂O₃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。Y₂O₃含量高的YSZ具有更强的稳定性，更适合在海洋环境使用。

关键词 ：钇稳定氧化锆 (YSZ), ZrO₂, 热障涂层 (TBCs), 低温老化, 氧空位

Abstract：

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) Y₂O₃ 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 Y₂O₃ 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 Y₂O₃ content has stronger stability and is more suitable for marine environment.

Key words： YSZ ZrO₂ TBCs Low temperature degradation (LTD) oxygen vacancy

收稿日期: 2022-03-14 32134.14.1005.4537.2022.070

ZTFLH:

TG172

基金资助: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)

作者简介: 宋健，男，1997年生，硕士生

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引用本文:

宋健, 周文晖, 王金龙, 孙文瑶, 陈明辉, 王福会. 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[J]. 中国腐蚀与防护学报, 2023, 43(2): 359-364.
Jian SONG, Wenhui ZHOU, Jinlong WANG, Wenyao SUN, Minghui CHEN, Fuhui WANG. Corrosion Behavior of Block Materials of Yttria Stabilized Zirconia with Different Content of Y₂O₃ in Marine Environment. Journal of Chinese Society for Corrosion and protection, 2023, 43(2): 359-364.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2022.070 或 https://www.jcscp.org/CN/Y2023/V43/I2/359

图1 不同Y2O3含量的YSZ在高低温交替水蒸气环境下腐蚀后的抗弯强度变化曲线

图2 5YSZ和12YSZ在高低温交替水蒸气环境下腐蚀不同时间后的XRD结果

图3 5YSZ和12YSZ腐蚀时间同m相体积占比关联曲线

表1 两种YSZ在高低温交替水蒸气环境下腐蚀不同次数后m相含量体积占比

图4 不同成分的YSZ在高低温交替水蒸气环境下腐蚀不同时间的扫描微观形貌

图5 YSZ在低温水蒸气环境中的腐蚀过程示意图

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