Real-time Detection of CMAS Corrosion Failure in APS Thermal Barrier Coatings Under Thermal Shock
| العنوان: | Real-time Detection of CMAS Corrosion Failure in APS Thermal Barrier Coatings Under Thermal Shock |
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| المؤلفون: | Yang Zhou, J. F. Wei, Zhu Wang, Zhetao Li, Li Yang |
| المصدر: | Experimental Mechanics. 60:775-785 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Thermal barrier coating, Thermal shock, Cracking, Materials science, Acoustic emission, Mechanics of Materials, Mechanical Engineering, Delamination, Thermography, Aerospace Engineering, Composite material, Failure mode and effects analysis, Corrosion |
| الوصف: | Calcium-magnesium-alumina-silicate (CMAS) corrosion has been regarded as the most important factor that leads to the degradation of thermal barrier coatings (TBCs). The failure mechanism of TBCs attacked by CMAS corrosion in the actual service conditions is still not clear due to the lack of an environmental simulator and nondestructive testing techniques. To solve the above problems, a real-time acoustic emission method combined with infrared thermography are developed to investigate the failure mechanism of TBCs attacked by CMAS corrosion. The results show that the acoustic emission signal spectrum only depends on the failure mode of the TBCs, and five failure modes are identified: surface vertical cracks, sliding interfacial cracks, opening interfacial cracks, substrate deformation and noise. The lifetime of TBCs attacked by CMAS corrosion is 40 thermal shock cycles, which is nearly six times lower than that of TBCs without CMAS corrosion (350 cycles). Conclusions: The failure mechanism of the former is interlaminar cracking and delamination in the ceramic coating; while that for the latter is interfacial delamination in the vicinity of thermal growth oxide. |
| تدمد: | 1741-2765 0014-4851 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1795e3b2a5c4d56e286a1e306d95bd79 https://doi.org/10.1007/s11340-020-00603-7 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........1795e3b2a5c4d56e286a1e306d95bd79 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 17412765 00144851 |
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