Miao Yu, Bing Zhu, Fangming Wang, Shoufeng Wang, Shichao Du, Kai Xu
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引用次数: 0
Abstract
A new Pt-modified NiSiAlY coating was prepared in this study. Oxidation and hot corrosion behaviors were investigated at 750 ℃. The coating exhibited good resistance against oxidation, attributed to the formation of a dense and continuous Al₂O₃ scale. Pt could promote the selective oxidation of Al by increasing the Al/Ni ratio and suppressing the formation of NiO. During the hot corrosion, the coating caused more intense attack when exposed to NaCl. NaCl could cause oxychlorination reaction in the initial stage, leading to cyclic corrosion. The corrosion mechanism, including the role of NaCl in initiating and accelerating degradation, was discussed, providing insights into performance of the Pt-modified NiSiAlY coating in harsh environments.
期刊介绍：
Oxidation of Metals is the premier source for the rapid dissemination of current research on all aspects of the science of gas-solid reactions at temperatures greater than about 400˚C, with primary focus on the high-temperature corrosion of bulk and coated systems. This authoritative bi-monthly publishes original scientific papers on kinetics, mechanisms, studies of scales from structural and morphological viewpoints, transport properties in scales, phase-boundary reactions, and much more. Articles may discuss both theoretical and experimental work related to gas-solid reactions at the surface or near-surface of a material exposed to elevated temperatures, including reactions with oxygen, nitrogen, sulfur, carbon and halogens. In addition, Oxidation of Metals publishes the results of frontier research concerned with deposit-induced attack. Review papers and short technical notes are encouraged.
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