In situ observation and strain distribution measurements of atmospheric plasma-sprayed mullite and Si multilayered coatings on SiC substrates

In situ observation and strain distribution measurements of atmospheric plasma-sprayed mullite and Si multilayered coatings on SiC substrates
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SiC基体上大气等离子喷涂莫来石和Si多层涂层的原位观察和应变分布测量

DOI:
10.1007/s10853-018-3080-z
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发表时间:
2019
影响因子:
4.5
通讯作者:
Hideki Kakisawa
Hideki Kakisawa
中科院分区:
材料科学3区
文献类型:
--
作者:
Ryo Inoue;Yutaro Arai;Hideki Kakisawa

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使用大气等离子喷涂在 SiC 基底上沉积莫来石/Si 多层涂层。使用高温观测系统(HTOS)检查保护表面莫来石层的泥裂。还使用数字图像相关(DIC)方法测量了面内表面应变分布。实验结果表明,加热过程中莫来石层中出现泥裂纹,主要是由于莫来石结晶过程中的收缩造成的。通过绘制最大主应变分布图可以检测到开裂事件。我们清楚地证明了 HTOS 和 DIC 是研究高温下厚涂层降解机制的有效工具。
A mullite/Si multilayer coating was deposited on a SiC substrate using atmospheric plasma spraying. Mud cracking of the protective surface mullite layer was examined using a high-temperature observation system (HTOS). In-plane surface strain distributions were also measured using the digital image correlation (DIC) method. The experimental results showed that mud cracks nucleated in the mullite layer during heating, primarily due to shrinkage of the mullite during crystallization. The cracking event was detectable by mapping the maximum principal strain distribution. We clearly demonstrated that HTOS and DIC are effective tools for investigating the degradation mechanisms of thick coatings at high temperatures.
热暴露对3Al2O3·2SiO2/Si/SiC涂层体系微观结构和力学性能的影响
DOI: 10.1002/9781119407270.ch41
发表时间: 2017
期刊: --
影响因子: --
作者:
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通讯作者: H. Kakisawa
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发表时间: 2008-03
期刊: Physical Review B
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