Research of Micro-Arc Spark Deposition of Stellite Alloy on SCH13 Steel and High-Temperature Oxidation Property

Abstract:

As is known to all, the technology is an effective way to improve the material surface performance. In this paper, Micro-arc spark deposition with stellite 6 alloy as the coating material on SCH13 steel substrates was carried out using high-energy micro-arc process. The microstructure, chemical composition, phase identification and hardness of the deposition layers were examined by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and Micro-hardness tester, respectively. Moreover, through high temperature oxidation, the property for the deposition layers of resistance to high temperature oxidation was analyzed systematically. The results show that the coatings were consisted of γ-Co solid solution and chromium carbides. The epitaxial growth coating with columnar grains was achieved by micro-arc spark deposition and the coating of stellite 6 alloy has a good metallurgical combination with the SCH13 steel substrate. After high temperature oxidation at 900°C, the surface film of the deposition layers were mainly consisted of chromium oxides, and the surface oxide film of SCH13 steel was Fe₂O₃ and NiCr₂O₄, the property for the deposition layers of resistance to high temperature oxidation is obviously better than SCH13 steel substrate.

• Periodical: Advanced Materials Research (Volumes 631-632)
• Pages: 35-39
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.631-632.35
• Online since: January 2013
• Authors: Chun Hua Zhang, Ming Lian Chen, Lei Zhou, Gong You Zhou, Song Zhang
• Keywords: High Temperature Oxidation Property, Micro-Arc Spark Deposition, SCH13 Steel, Stellite Alloy

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