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Microstructure and wear behavior of plasma-sprayed nanostructured WC-Co coatings

TitoloMicrostructure and wear behavior of plasma-sprayed nanostructured WC-Co coatings
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2013
AutoriDi Girolamo, G., Marra F., Pilloni L., Pulci G., Tirillò J., and Valente T.
RivistaInternational Journal of Applied Ceramic Technology
Volume10
Paginazione60-71
ISSN1546542X
Parole chiaveAtmospheric plasma spraying, Cermet coatings, Coating microstructures, Coatings, Conventional coatings, Dry sliding, Friction and wear properties, Gas mixtures, Identical conditions, Microstructure, Nano-structured, Plasma jets, Plasma sprayed, Plasma spraying, Scanning electron microscopy, Tribological properties, WC-Co coating, Wear behaviors, Wear of materials, X ray diffraction
Abstract

Atmospheric plasma spraying of WC-Co particles with standard gas mixtures (Ar-H2) typically results in largely decarburized coatings with relatively low wear resistance. To fabricate cermet coatings with enhanced tribological properties, nanostructured WC-Co coatings were plasma sprayed using two different process gas mixtures. Phase composition and microstructure were investigated by X-ray diffraction and scanning electron microscopy, respectively. Microhardness increased by increasing the amount of retained WC grains in coating microstructure. Friction and wear properties, measured under dry sliding conditions, strongly depended on the degree of decarburization. They were comparable to those of conventional coatings produced using identical conditions. © 2012 The American Ceramic Society.

Note

cited By 14

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84872051459&doi=10.1111%2fj.1744-7402.2011.02734.x&partnerID=40&md5=f6866012fe7a3461b29a93386fd6f578
DOI10.1111/j.1744-7402.2011.02734.x
Citation KeyDiGirolamo201360