Abstract
NiAlHf and NiAlHfCrSi coatings were deposited by electron beam physical vapor deposition (EB-PVD). The grain size and orientation of NiAlHf and NiAlHfCrSi coatings were determined by electron backscatter diffraction (EBSD). The NiAlHf coating reveals a more uniform grain size compared to NiAlHfCrSi coating, while the NiAlHfCrSi coating shows a <111> preferential orientation which is parallel to the normal direction of the surface of the coating. The cyclic oxidation behavior of NiAlHf and NiAlHfCrSi coatings at 1150 °C was investigated. Compared to NiAlHf coating, the NiAlHfCrSi coating shows improved resistance to cyclic oxidation and scale spallation. The effect of grain size and orientation on the cyclic oxidation behavior of NiAlHf and NiAlHfCrSi coatings were investigated at 1150 °C.
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This study was financially supported by the National Basic Research Program of China (No. 2012CB625100), the National High Technology Research and Development Program of China (No. 2012AA03A512) and the National Natural Science Foundations of China (Nos. 51231001 and 51425102).
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Liang, SJ., Song, HH., Zheng, L. et al. Cyclic oxidation behavior of electron beam physical vapor deposition NiAlHf and NiAlHfCrSi coatings at 1150 °C. Rare Met. 42, 1408–1413 (2023). https://doi.org/10.1007/s12598-016-0839-8
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DOI: https://doi.org/10.1007/s12598-016-0839-8