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Surface Engineering Volume 36, 2020 - Issue 11: Special Issue: Coating production and surface engineering of carbide-based composites, Edited by Nuria Cinca
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Research Articles

Mechanical properties of WC/Co-CNT HVOF sprayed coatings

M. H. Staiaa Arts et Métiers ParisTech, MSMP, Centre de Lille, Lille Cedex, France;b Faculty of Engineering, School of Metallurgical Engineering and Materials Science, Central University of Venezuela, Caracas, VenezuelaCorrespondence[email protected]
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A. Mejiasa Arts et Métiers ParisTech, MSMP, Centre de Lille, Lille Cedex, FranceView further author information
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J. G. La Barberab Faculty of Engineering, School of Metallurgical Engineering and Materials Science, Central University of Venezuela, Caracas, Venezuela;c Université Polytechnique Hauts-de-France, CNRS, LAMIH UMR 8201, F-59313 Valenciennes, FranceView further author information
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E.S. Puchi-Cabrerab Faculty of Engineering, School of Metallurgical Engineering and Materials Science, Central University of Venezuela, Caracas, Venezuela;c Université Polytechnique Hauts-de-France, CNRS, LAMIH UMR 8201, F-59313 Valenciennes, FranceView further author information
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C. Villalobos-Gutierrezd Faculty of Engineering, School of Mechanical Engineering, Central University of Venezuela, Caracas, VenezuelaView further author information
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Y. Y. Santanab Faculty of Engineering, School of Metallurgical Engineering and Materials Science, Central University of Venezuela, Caracas, VenezuelaView further author information
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A. Montagnea Arts et Métiers ParisTech, MSMP, Centre de Lille, Lille Cedex, FranceView further author information
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A. Iosta Arts et Métiers ParisTech, MSMP, Centre de Lille, Lille Cedex, FranceView further author information
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M. A. Rodriguezd Faculty of Engineering, School of Mechanical Engineering, Central University of Venezuela, Caracas, VenezuelaView further author information
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Pages 1156-1164 | Received 07 Jun 2018, Accepted 24 Sep 2018, Published online: 09 Oct 2018
 
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ABSTRACT

Coatings based on WC–12Co, with and without the reinforcement of carbon nanotubes (CNTs) have been deposited by means of the HVOF thermal spraying technique on a SAE 1020 steel substrate. The aim of the present study is to evaluate in detail the influence of the 36 h milling time on both feedstock powders, particularly on the mechanical properties of WC-12Co coatings, with (WCCNT) and without (WCCONV) CNTs addition. Properties such as hardness, apparent yield stress and fracture toughness were observed to exhibit an improvement due to CNTs addition, whereas the elastic modulus was found to be insensitive to the CNTs content. These findings could explain the enhancement of the wear resistance of the CNTs-reinforced coatings (WCCNT) reported in the literature.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

Professor Puchi-Cabrera gratefully acknowledges the financial support granted to him by Valenciennes Metropole, Valenciennes, France.

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