In situ Synthesis of Ceramic Phase Reinforced Fe-Based Alloy Surface Coating by PTA

Lin Zong; Zheng Jun Liu

doi:10.4028/www.scientific.net/AMR.189-193.518

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Cavitation Erosion Characteristics of an Iron-Based Coating Prepared by High Velocity Arc Spraying
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193In situ Synthesis of Ceramic Phase Reinforced...

In situ Synthesis of Ceramic Phase Reinforced Fe-Based Alloy Surface Coating by PTA

Abstract:

The in-situ ceramic phases reinforced Fe-based surface coating had been produced by prepared high-carbon ferrochromium, ferrovanadium and graphite power on 20g steel through plasma transferred arc weld-surfacing process(PTA). The microstructure and properties were investigated by means of optical microscopy(op), scanning electron microscopy(SEM), X-ray diffraction(XRD) and microhardness meter. The results showed that the substrate and the coating formed good metallurgical bonding.The microstructure of coating consists of primary M7C3 carbide and eutectic structures[M+γ′+M7C3+VC]. The primary hexagonal (Fe,Cr,V)7C3 with larger size evenly distributed in coating and the fine VC particles were globular shape. The microhardness appeared reasonable distribution from substrate to the top ,which ensured that the materials had good abrasive wear resistance.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

518-522

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.518

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Online since:

February 2011

Authors:

Lin Zong, Zheng Jun Liu

Keywords:

Ceramic Phase, Microhardness, Microstructure, PTA, Wear Resistance

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