@article{82acebab25334962a3c459f2cd9098b6,
title = "Oxide scale formation and microstructural degradation of conventional, Pt- and Pt/Ir-modified NiAl diffusion coatings during thermocyclic exposure at 1100 °C",
abstract = "The microstructural degradation of Pt- and Pt/Ir-modified NiAl coatings during thermocyclic exposure at 1100 °C was investigated. Detailed microstructural investigation revealed the different beneficial effects of Pt and Ir. Platinum was found to be active in the healing mechanism of the oxide scale, whereas Ir incorporation provided an obstruction to interdiffusion. Oxidized surface morphologies exhibited the formation of a dense alumina scale on top of the PtAl coating, whereas Al-depletion in the NiAl coating was accelerated due to scale spallation and interfacial void formation. Additionally, Pt inward- and Ni outward diffusion was substantially reduced in the Ir-containing coatings.",
keywords = "EPMA, Intermetallics, Oxidation, SEM, Thermal cycling, X-ray diffraction",
author = "C. Oskay and Galetz, {M. C.} and H. Murakami",
note = "Funding Information: The authors thank Dr. G. Schmidt for the EPMA analysis. They also gratefully acknowledge H. Murakami, T. Konno, M. Yamashina, K. Nakane and M. Braun for their assistance and support in experimental processes, and Dr. R.N. Durham for proof-reading. A part of this work has been conducted under the auspices of JST research program, “Innovation in manufacturing processes for sustainable resource circulation” in the research area of “Realization of a Sustainable Society in Mirai-Program”. One of the authors (C.O.) thanks the financial support provided by NIMS in the framework of NIMS Internship. The authors also would like to thank Mr. A. Wagawa, A. Nagaoka and A. Okuda at Tanaka Kikinzoku Kogyo K.K., Japan for their support with the slurry coating process. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",
year = "2018",
month = nov,
doi = "10.1016/j.corsci.2018.08.034",
language = "English",
volume = "144",
pages = "313--327",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Elsevier Limited",
}