Acoustic emission monitoring and damage mode discrimination of APS thermal barrier coatings under high temperature CMAS corrosion
文献类型：期刊论文
| 作者 | Yang L; Yang TT; Zhou YC; Wei YG(魏悦广) ; Wu RT; Wang NG
|
| 刊名 | SURFACE & COATINGS TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 304页码:272-282 |
| 通讯作者邮箱 | lyang@xtu.edu.cn ; zhouyc@xtu.edu.cn |
| 关键词 | Thermal barrier coatings Acoustic emission Wavelet packet transform CMAS corrosion Damage mode |
| ISSN号 | 0257-8972 |
| 产权排序 | [Yang, L.; Yang, T. T.; Zhou, Y. C.; Wang, N. G.] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan P, Xiangtan 411105, Hunan, Peoples R China; [Yang, L.; Yang, T. T.; Zhou, Y. C.; Wang, N. G.] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China; [Wei, Y. G.] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Wu, R. T.] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan |
| 通讯作者 | Yang, L ; Zhou, YC (reprint author), Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan P, Xiangtan 411105, Hunan, Peoples R China. |
| 中文摘要 | Molten calcium-magnesium-alumino-silicate (CMAS) corrosion is the most dangerous failure mode for thermal barrier coatings (TBCs). The real-time monitoring and mode discrimination of the corrosion failure process are desirable to understand the corrosion failure mechanism of TBCs. In this paper, the failure mechanism of the TBCs subjected to molten CMAS attack is investigated with acoustic emission (AE). Based on the number and amplitude, and compared to the substrate and the TBCs without CMAS, more serious damage is found to occur in the TBCs attacked by the molten CMAS. Possible failure modes are discriminated by wavelet analysis, and the results indicate that there are four distinct frequency bands corresponding to surface vertical cracks, sliding interface cracks, opening interface cracks, and substrate deformation in the TBCs suffered high temperature molten CMAS corrosion. In fact, the frequency band of sliding interface crack is associated with two crack types, including the crack at the YSZ/BC interface and the parallel crack in the ceramic coating induced by the compressive stress. These two cracks dominate the whole failure process, and ultimately result in the spallation of coatings. (C) 2016 Elsevier B.V. All rights reserved. |
| 分类号 | 二类 |
| 类目[WOS] | Materials Science, Coatings & Films ; Physics, Applied |
| 研究领域[WOS] | Materials Science ; Physics |
| 关键词[WOS] | Thermal barrier coatings ; Acoustic emission ; Wavelet packet transform ; CMAS corrosion ; Damage mode |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.surfcoat.2016.06.080 |
| 语种 | 英语 |
| WOS记录号 | WOS:000384775900032 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59708]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yang L,Yang TT,Zhou YC,et al. Acoustic emission monitoring and damage mode discrimination of APS thermal barrier coatings under high temperature CMAS corrosion[J]. SURFACE & COATINGS TECHNOLOGY,2016,304:272-282. |
| APA | Yang L,Yang TT,Zhou YC,魏悦广,Wu RT,&Wang NG.(2016).Acoustic emission monitoring and damage mode discrimination of APS thermal barrier coatings under high temperature CMAS corrosion.SURFACE & COATINGS TECHNOLOGY,304,272-282. |
| MLA | Yang L,et al."Acoustic emission monitoring and damage mode discrimination of APS thermal barrier coatings under high temperature CMAS corrosion".SURFACE & COATINGS TECHNOLOGY 304(2016):272-282. |
入库方式： OAI收割
来源：力学研究所
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