Error and modification in thermal barrier coatings measurement using impedance spectroscopy
文献类型：期刊论文
| 作者 | Yang L; Zhu W; Li CF; Zhou YC; Wang NG; Wei YG(魏悦广)
|
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2017-04-15 |
| 卷号 | 43期号:6页码:4976-4983 |
| 关键词 | Impedance spectroscopy Asymmetric electrode Divergence of electric field Thermal barrier coating Measurement error |
| ISSN号 | 0272-8842 |
| 中文摘要 | In impedance spectroscopy testing of metal/ceramic multi-layers such as thermal barrier coatings (TBCs) in order to avoid electric leakage asymmetric electrode is widely adopted. However how is electric field distribution in asymmetric electrode system what error does it bring to measurement results and how to modify these errors etc. are still not understood. In this study electric field divergence in TBCs measurement induced by asymmetric electrode is investigated through solving a three-dimensional electric field equations numerically. The results show that the asymmetric electrode inevitably triggers divergence of electric field line and as frequency decreases the divergence increases considerably. When Pt electrode diameter is chosen as 1 mm in ceramic coating the errors in thickness measurement for both YSZ and TGO are 26.20% and 89.3% respectively. The errors rise as both YSZ and TGO thicknesses increase while the errors decrease as Pt electrode size increases. The error in thickness measurement for TGO layer is much larger than that for YSZ. Through present research a scheme to eliminate the effect of electric field divergence on measurement error is proposed |
| 类目[WOS] | Materials Science, Ceramics |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | YTTRIA-STABILIZED ZIRCONIA ; NONDESTRUCTIVE EVALUATION ; ELECTRICAL-CONDUCTIVITY ; DEGRADATION ; TRANSFORMATION ; DEPOSITION ; SPECTRA ; MODEL |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000394556200034 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60574]  |
| 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,Zhu W,Li CF,et al. Error and modification in thermal barrier coatings measurement using impedance spectroscopy[J]. CERAMICS INTERNATIONAL,2017,43(6):4976-4983. |
| APA | Yang L,Zhu W,Li CF,Zhou YC,Wang NG,&魏悦广.(2017).Error and modification in thermal barrier coatings measurement using impedance spectroscopy.CERAMICS INTERNATIONAL,43(6),4976-4983. |
| MLA | Yang L,et al."Error and modification in thermal barrier coatings measurement using impedance spectroscopy".CERAMICS INTERNATIONAL 43.6(2017):4976-4983. |
入库方式： OAI收割
来源：力学研究所
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