Microstructure and Properties of Cr<SUB>3</SUB>Si/γ-Fe Composite Coating Prepared by Plasma Transferred Arc Cladding Technique

doi:10.1088/0256-307X/26/9/095202

Chin. Phys. Lett.

2009, Vol. 26

Issue (9): 095202 DOI: 10.1088/0256-307X/26/9/095202

PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES

Microstructure and Properties of Cr₃Si/γ-Fe Composite Coating Prepared by Plasma Transferred Arc Cladding Technique

LIU Yuan-Fu^1,3, CHEN De-Qiang¹, HAN Jian-Min¹, WU Hao², XU Xiang-Yang¹, YANG Si-Ze³

¹Institute of Materials Science and Engineering, Beijing Jiaotong University, Beijing 100044²School of Materials Science and Engineering, Beihang University, Beijing 100083³Institute of Physics, Chinese Academy of Sciences, Beijing 100080

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LIU Yuan-Fu, CHEN De-Qiang, HAN Jian-Min et al 2009 Chin. Phys. Lett. 26 095202

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Abstract Under optimized operating parameters, a wear and corrosion resistant Cr₃Si/γ-Fe composite coating is fabricated on a normalized 0.45% carbon steel substrate by using the plasma transferred arc (PTA) cladding technique with Fe-Cr-Si elemental powder blend as the precursor material. Microstructure, microhardness, dry-sliding wear resistance and electrochemical corrosion characteristic of the coating are evaluated. Test results show that the composite coating is mainly composed of primary Cr₃Si dendrites and the interdendritic supersaturated iron-base solid solution γ-Fe. Between the Cr₃Si/γ-Fe composite coating and the normalized 0.45% carbon steel substrate, there is a narrow metallurgical bonding zone. The Cr₃Si/γ-Fe composite coating exhibits high microhardness, excellent wear and corrosion resistance under test conditions.

Keywords: 52.77.Fv 81.40.Pq 81.40.Np

Received: 03 December 2008 Published: 28 August 2009

PACS:	52.77.Fv	(High-pressure, high-current plasmas)
	81.40.Pq	(Friction, lubrication, and wear)
	81.40.Np	(Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/9/095202 OR https://cpl.iphy.ac.cn/Y2009/V26/I9/095202

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	LIU Yuan-Fu
	CHEN De-Qiang
	HAN Jian-Min
	WU Hao
	XU Xiang-Yang
	YANG Si-Ze

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