Hot Corrosion Behavior of NiCoCrAlYSiHf Coating Deposited by Arc Ion Plating

Abstract:

Abstract: NiCoCrAlYSiHf coatings have been prepared by arc ion plating (AIP) on CrNi3MoVA steel ,which their microstructure and isothermal oxidation behavior at 950°C studied using SRD,SEM and EDAX. The results indicate that NiCoCrAlYSiHf coatings substantially increase the high-temperature oxidation resistance of CrNi3MoVA steel and the oxidation process was retarded mainly by the presence of α-Al2O3 oxide scale on the coating. Meanwhile, the major diffusion occured between the substrate element Fe and the coating element Co while Cr mainly distributed in the coating.

• Periodical: Advanced Materials Research (Volumes 472-475)
• Pages: 395-399
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.472-475.395
• Online since: February 2012
• Authors: Jia Hui Qu, Cean Guo, Jian Zhang
• Keywords: Arc Ion Plating (AIP), CrNi3MoVA Steel, NiCoCrAlYSiHf Coating, Oxidation Behavior

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