Thermal Sprayed Nanostructured WC/Co Hardcoatings

Autor:	Ganesh Skandan, R. K. Sadangi, R. Yao, M. Jain, William E. Mayo, Z. Kalman, Bernard H. Kear
Rok vydání:	2000
Předmět:	Nanostructure Decarburization Materials science Metallurgy chemistry.chemical_element Condensed Matter Physics Surfaces Coatings and Films Superheating chemistry Vaporization Materials Chemistry Thin film Thermal spraying Deposition (chemistry) Cobalt
Zdroj:	Journal of Thermal Spray Technology. 9:399-406
ISSN:	1059-9630
DOI:	10.1361/105996300770349863
Popis:	Hardcoatings of WC/Co, produced by high-velocity oxy-fuel (HVOF) and air plasma spray (APS) deposition, have been studied. During HVOF deposition, nanostructured powder experiences more decarburization than conventional powder, whereas in APS deposition, just the opposite effect occurs This is explained in terms of the influence of the highly porous, spherical-shell morphology of the nano-WC/Co particles on their melting characteristics and reaction kinetics. In particular, heterogeneous melting and localized superheating of the high-surface-area powder is considered to be a controlling factor in decarburization. The situation is further complicated in APS deposition by high-temperature vaporization of Co and C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7ee89cd0edb798d003b0a2e5d2d5e0f2 https://doi.org/10.1361/105996300770349863 Zobrazit plný text záznamu Full text from SpringerLink