IN SITUSYNTHESIS OFTiC–TiB2REINFORCEDFeCrSiBCOMPOSITE COATING BY LASER CLADDING

Baoshuai Du (), Zengda Zou, Xinhong Wang and Qingming Li
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Baoshuai Du: School of Materials Science and Engineering, Shandong University, Jinan 250061, P.R. China
Zengda Zou: School of Materials Science and Engineering, Shandong University, Jinan 250061, P.R. China
Xinhong Wang: School of Materials Science and Engineering, Shandong University, Jinan 250061, P.R. China
Qingming Li: School of Materials Science and Engineering, Shandong University, Jinan 250061, P.R. China

Surface Review and Letters (SRL), 2007, vol. 14, issue 02, 315-319

Abstract: TiCandTiB2reinforced iron based metal matrix composite (MMC) coating was synthesized on mild carbon steel by laser cladding employingB4C, ferrotitanium, andFeCrSiBmixed powders. The microstructure and chemical composition were analyzed by means of SEM, EPMA, and XRD. Results show that the coating mainly consists ofα–Fe(Ni),TiB2,TiC,B6Fe23,Cr2B, andM23C6.TiB2, andTiCreinforcements are formedin situthrough the reaction betweenB4Cand ferrotitanium. Hardness and wear measurement results show that the hardness and wear resistance of the composites are much higher than that of the as-received sample.

Keywords: Composite materials; coating; in situsynthesized; laser cladding; TiC–TiB2 (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07009414

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