High-temperature crack resistance of yttria-stabilized zirconia coatings enhanced by interfacial stress transfer

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2024-11-02 DOI:10.1016/j.apsusc.2024.161688

Zhichen Meng , Weifeng Qian , Bingkun Ning , Shuang Wang , Yongnan Chen , Yong Zhang , Nan Wang , Yanchao Li , Wen Zhang , Guangrui Gao

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Abstract

This study investigated the high-temperature crack resistance properties of yttria-stabilized zirconia (YSZ) coatings prepared in electrolytes with varying amounts of Y³⁺ addition, within a temperature range from 800 °C to 1000 °C. The flexibility-enhanced YSZ coating enabled by obtaining tetragonal zirconia (t-ZrO₂) and cubic zirconia (c-ZrO₂) coherent interfaces with high stress transfer efficiency, which is achieved by adjusting the phase composition in ZrO₂ coatings. The high-quality toughened YSZ coating with 59 % lower crack density compared with traditional ZrO₂ coating. This phenomenon is attributed to the c-ZrO₂/t-ZrO₂ coherent interface alleviates interfacial deformation at high temperatures and maintains a good stress transfer capability through its stable structure, which helps to disperse the thermal stress within the coating and inhibits crack propagation. This work provides a straightforward strategy for tailoring ZrO₂ coatings crack propagation resistance property at high temperatures by interface enhancement.

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通过界面应力传递增强钇稳定氧化锆涂层的高温抗裂性

本研究探讨了在不同Y3+添加量的电解质中制备的钇稳定氧化锆（YSZ）涂层在800 ℃至1000 ℃温度范围内的高温抗裂性能。通过调整 ZrO2 涂层中的相组成，获得了具有高应力传递效率的四方氧化锆（t-ZrO2）和立方氧化锆（c-ZrO2）相干界面，从而实现了柔韧性增强的 YSZ 涂层。与传统的 ZrO2 涂层相比，高质量增韧 YSZ 涂层的裂纹密度降低了 59%。这一现象归因于 c-ZrO2/t-ZrO2 相干界面可减轻高温下的界面变形，并通过其稳定的结构保持良好的应力传递能力，这有助于分散涂层内的热应力并抑制裂纹扩展。这项工作为通过界面增强来定制 ZrO2 涂层在高温下的抗裂纹扩展性能提供了一种直接的策略。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.