Tribological behaviour of plasma-sprayed Al2O3 coatings under severe wear conditions

Pantelis, DI; Psyllaki, P; Alexopoulos, N

dc.contributor.author	Pantelis, DI	en
dc.contributor.author	Psyllaki, P	en
dc.contributor.author	Alexopoulos, N	en
dc.date.accessioned	2014-03-01T01:15:57Z
dc.date.available	2014-03-01T01:15:57Z
dc.date.issued	2000	en
dc.identifier.issn	0043-1648	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13844
dc.subject	wear	en
dc.subject	Al2O3	en
dc.subject	friction	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.title	Tribological behaviour of plasma-sprayed Al2O3 coatings under severe wear conditions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0043-1648(99)00324-5	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0043-1648(99)00324-5	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Plasma-sprayed alumina coatings are widely used as wear resistant coatings on a variety of metallic substrates. However, the particular structures of plasma-sprayed coatings (lamellar microcracks, unmolten particles, weak interfaces and high porosity) affect their mechanical properties and consequently their tribological behaviour. The present work deals with the wear behaviour of a 450 mu m thick Al2O3 coating deposited on spheroidal graphite (S.G.) cast-iron substrate by Atmospheric Plasma Spraying (APS). Wear tests were carried out under severe conditions (normal force varying from 50 to 160 N, sliding speed: 1.40 m/s and average relative humidity (RH): 60%), using as a counterbody a quenched D2 tool steel. The microstructural characteristics of the ceramic coating were correlated to the evolution of both the friction and the wear coefficients and to the wear mechanisms involved. (C) 2000 Elsevier Science S.A. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	WEAR	en
dc.identifier.doi	10.1016/S0043-1648(99)00324-5	en
dc.identifier.isi	ISI:000085944500005	en
dc.identifier.volume	237	en
dc.identifier.issue	2	en
dc.identifier.spage	197	en
dc.identifier.epage	204	en