Corrosion mechanism of CuAl-NiC abradable seal coating system—The influence of porosity, multiphase, and multilayer structure on the corrosion failure

التفاصيل البيبلوغرافية
العنوان: Corrosion mechanism of CuAl-NiC abradable seal coating system—The influence of porosity, multiphase, and multilayer structure on the corrosion failure
المؤلفون: Ni, Y., Zhang, F., Njoku, D. I., Yu, Y., Pan, Jinshan, 1962, Meng, M., Li, Y.
المصدر: Journal of Materials Science & Technology. 88:258-269
مصطلحات موضوعية: Abradable seal coating system, Galvanic corrosion, Multilayer, Porosity, Aluminum compounds, Chlorine compounds, Coatings, Copper compounds, Corrosive effects, Dealloying, Multilayers, Nickel compounds, Seals, Chloride solutions, Corrosion behavior, Corrosion mechanisms, Electrochemical measurements, Mercury intrusion porosimetry, Multilayer structures, Selective corrosion, Structure analysis, Failure (mechanical)
الوصف: In this study, the corrosion behavior of the CuAl-NiC abradable seal coating system in chloride solution was investigated to systematically research the effect of porosity, multiphase, and multilayer structure on the corrosion failure. Through the composition and structure analysis, the corrosion process of the system was predicted and then verified with mercury intrusion porosimetry, cross-section SEM/EDS analysis, and electrochemical measurements. The results demonstrated that the interphase selective corrosion caused the porosity of the top layer to decrease first and then increase during the corrosion development. The interlayer galvanic corrosion, determined by the pore connectivity, is crucial for corrosion failure.
وصف الملف: print
URL الوصول: https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-308864
قاعدة البيانات: SwePub
الوصف
تدمد:10050302
DOI:10.1016/j.jmst.2021.01.068