Microstructures, mechanical properties and corrosion resistance of   Hastelloy C22 coating produced by laser cladding

doi:10.1016/j.jallcom.2012.10.193

CORC > 北京大学 > 工学院

	Microstructures, mechanical properties and corrosion resistance of Hastelloy C22 coating produced by laser cladding
	Wang, Qin-Ying ; Zhang, Yang-Fei ; Bai, Shu-Lin ; Liu, Zong-De
刊名	journal of alloys and compounds
	2013
关键词	Laser cladding Hastelloy C22 coating Microstructure Mechanical property Corrosion resistance WC COMPOSITE COATINGS MAGNESIUM ALLOY BEHAVIOR SURFACE INDENTATION POWDER STEEL DEPOSITION ABLATION CARBIDE
DOI	10.1016/j.jallcom.2012.10.193
英文摘要	The Hastelloy C22 coatings H1 and H2 were prepared by laser cladding technique with laser scanning speeds of 6 and 12 mm/s, respectively. Their microstructures, mechanical properties and corrosion resistance were investigated. The microstructures and phase compositions were studied by metallurgical microscope, scanning electron microscope and X-ray diffraction analysis. The hardness and scratch resistance were measured by micro-hardness and nanoindentation tests. The polarization curves and electrochemical impedance spectroscopy were tested by electrochemical workstation. Planar, cellular and dendritic solidifications were observed in the coating cross-sections. The coatings metallurgically well-bonded with the substrate are mainly composed of primary phase gamma-nickel with solution of Fe, W, Cr and grain boundary precipitate of Mo6Ni6C. The hardness and corrosion resistance of steel substrate are significantly improved by laser cladding Hastelloy C22 coating. Coating H2 shows higher micro-hardness than that of H1 by 34% and it also exhibits better corrosion resistance. The results indicate that the increase of laser scanning speed improves the microstuctures, mechanical properties and corrosion resistance of Hastelloy C22 coating. (C) 2012 Elsevier B. V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000314640600045&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; SCI(E); EI; 26; ARTICLE; 253-258; 553
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154511]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Qin-Ying,Zhang, Yang-Fei,Bai, Shu-Lin,et al. Microstructures, mechanical properties and corrosion resistance of Hastelloy C22 coating produced by laser cladding[J]. journal of alloys and compounds,2013.
APA	Wang, Qin-Ying,Zhang, Yang-Fei,Bai, Shu-Lin,&Liu, Zong-De.(2013).Microstructures, mechanical properties and corrosion resistance of Hastelloy C22 coating produced by laser cladding.journal of alloys and compounds.
MLA	Wang, Qin-Ying,et al."Microstructures, mechanical properties and corrosion resistance of Hastelloy C22 coating produced by laser cladding".journal of alloys and compounds (2013).