Plasma transferred arc composite coatings with self lubricating properties, based on Fe and Ti sulfides: Microstructure and tribological behavior

Skarvelis, P; Papadimitriou, GD

dc.contributor.author	Skarvelis, P	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T01:31:40Z
dc.date.available	2014-03-01T01:31:40Z
dc.date.issued	2009	en
dc.identifier.issn	0257-8972	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19875
dc.subject	Friction coefficient	en
dc.subject	Metal matrix composite (MMC)	en
dc.subject	Plasma transferred arc (PTA)	en
dc.subject	Solid lubricants	en
dc.subject	Sulfides	en
dc.subject	Wear	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Arsenic	en
dc.subject.other	Carbon fiber reinforced plastics	en
dc.subject.other	Carbon steel	en
dc.subject.other	Cavity resonators	en
dc.subject.other	Coatings	en
dc.subject.other	Composite coatings	en
dc.subject.other	Crystallization	en
dc.subject.other	Friction	en
dc.subject.other	Iron	en
dc.subject.other	Metallic matrix composites	en
dc.subject.other	Microstructure	en
dc.subject.other	Molybdenum	en
dc.subject.other	Plasma arc melting	en
dc.subject.other	Plasma torches	en
dc.subject.other	Plasma welding	en
dc.subject.other	Plasmas	en
dc.subject.other	Self lubricating composites	en
dc.subject.other	Smelting	en
dc.subject.other	Solid lubricants	en
dc.subject.other	Solidification	en
dc.subject.other	Steel	en
dc.subject.other	Sulfur	en
dc.subject.other	Temperature indicating cameras	en
dc.subject.other	Titanium	en
dc.subject.other	Titanium carbide	en
dc.subject.other	Tribology	en
dc.subject.other	Wear resistance	en
dc.subject.other	Friction coefficient	en
dc.subject.other	Metal matrix composite (MMC)	en
dc.subject.other	Plasma transferred arc (PTA)	en
dc.subject.other	Sulfides	en
dc.subject.other	Wear	en
dc.subject.other	Hard facing	en
dc.title	Plasma transferred arc composite coatings with self lubricating properties, based on Fe and Ti sulfides: Microstructure and tribological behavior	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.surfcoat.2008.11.010	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.surfcoat.2008.11.010	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The plasma transferred arc (PTA) technique was used to produce composite coatings based on co-melting of MoS2, TiC and iron ingredients, in an attempt to obtain wear resistant layers with self lubricating properties. As a matter of fact, both molybdenum and titanium are known to form with sulfur either crystalline or amorphous compounds exhibiting special self lubricating properties. In this perspective three coatings containing the same quantity of TiC and increasing MoS2 contents were produced using plain carbon steel material as the substrate. Three other coatings containing only increasing contents of MoS2 without TiC were prepared under the same conditions for comparison. The experiments have shown that both TiC and MoS2 ingredients dissolve completely in the melt under the plasma arc. whereas their elements, Ti, C and S, are redistributed in the solidification products forming new compounds. The influence of the presence of sulfur in the solidification path of the Fe-Ti(Mo)-C system is studied. Although the original MoS2 compound is totally absent in the final microstructure, the composites containing both MoS2 and TiC have formed new complex sulfides, presumably endowed with self lubricating properties. As a result, the wear tests performed with a pin-on-disk apparatus have shown that the coatings which were produced using both TiC and MoS2 ingredients exhibited improved friction coefficients and lower wear rates in comparison to the steel substrate as well as to the composite containing TiC, but exempted from MoS2. (c) 2008 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Surface and Coatings Technology	en
dc.identifier.doi	10.1016/j.surfcoat.2008.11.010	en
dc.identifier.isi	ISI:000263618600015	en
dc.identifier.volume	203	en
dc.identifier.issue	10-11	en
dc.identifier.spage	1384	en
dc.identifier.epage	1394	en