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Interfacial Elemental Distribution In Tungsten Carbide Coated Steel

Published online by Cambridge University Press:  02 July 2020

S.V. Naidu ,
Carlos Green ,
Christopher Maxie ,
James D. Garber  and
Gary A. Glass
S.V. Naidu
Affiliation:
Department of Physics, Grambling State University, Grambling, LA71245.
Carlos Green
Affiliation:
Department of Physics, Grambling State University, Grambling, LA71245.
Christopher Maxie
Affiliation:
Department of Physics, Grambling State University, Grambling, LA71245.
James D. Garber
Affiliation:
Department of Chemical Engineering, and University of Southwestern Louisiana, Lafayette, LA70504
Gary A. Glass
Affiliation:
Acadiana Research Laboratory, University of Southwestern Louisiana, Lafayette, LA70504
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Extract

Thermal spray of carbide coatings with high hardness and corrosion resistance onto steel substrates has technological importance. The adhesive strength is greatly effected by the interfacial impurities. Low porous and good quality 200 μm thick 86WC10Co4Cr coatings on 4140 steel are obtained by thermal spray methods using SC-HVOF gun at Cooper Oil Tools, Houston, TX. A Carl Zeiss DSM942 SEM with 3.5 nm resolution at 30 keV and Kevex LPX1 Super Dry Quantum Si(Li) Detector with < 145 eV resolution for Energy Dispersive X-ray Spectroscopy (EDXS) were used to study the elemental distribution across the interface. Fig. 1 shows the SEM micrographs of the interface between 86WC10Co4Cr thermal spray coating and 4140 steel substrate. The anchor patterns seen at the interface are believed to improve the adhesive qualities between the coating and the substrate.

Type
Thin Films/Coatings
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 838 - 839
Copyright
Copyright © Microscopy Society of America

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