Self lubricating composite coatings containing TiC–MnS or WC-MnS compounds prepared by the plasma transferred arc (PTA) technique / P. Skarvelis in Transactions of the ASME . Journal of tribology, Vol. 132 N° 3 (Juillet 2010)  

Public ISBD [article]  inTransactions of the ASME . Journal of tribology > Vol. 132 N° 3 (Juillet 2010) . - 08 p. Titre : Self lubricating composite coatings containing TiC–MnS or WC-MnS compounds prepared by the plasma transferred arc (PTA) technique Type de document : texte imprimé Auteurs : P. Skarvelis, Auteur ; G. D. Papadimitriou, Auteur ; M. Perraki, Auteur Année de publication : 2011 Article en page(s) : 08 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Abrasion Friction Lubrication Manganese compounds Particle reinforced composites Titanium Tungsten Wear resistance resistant coatings Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Composite coatings containing manganese sulphide as lubricating addition and enhanced with hard carbide particles (TiC, WC) were synthesized on a plain steel substrate using the plasma transferred arc technique. The coatings are well bonded to the substrate, have a thickness of about 1 mm, and are free of any visual defects. They consist mainly of a martensitic or ferritic matrix enhanced with titanium or tungsten carbides and a dispersion of MnS particles. The tribological properties of the composites are assessed using a pin-on-disk device. Both composites possess self lubricating properties, due to the formation of a thin layer of manganese sulphide on their wear tracks. The corresponding friction coefficients vary between 0.25 and 0.28, compared with 0.50–0.60 obtained from similar hard coatings without MnS addition. The wear rates are of the order of 10−5 mm3/m N and are two orders of magnitude lower than those obtained from the substrate material with MnS addition, but without the presence of hard enhancing particles. The wear regime is mild abrasion due to the combined action of both lubricating (MnS) and hard (TiC or WC) particles. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...] [article] Self lubricating composite coatings containing TiC–MnS or WC-MnS compounds prepared by the plasma transferred arc (PTA) technique [texte imprimé] / P. Skarvelis, Auteur ; G. D. Papadimitriou, Auteur ; M. Perraki, Auteur . - 2011 . - 08 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 132 N° 3 (Juillet 2010) . - 08 p. Mots-clés : Abrasion Friction Lubrication Manganese compounds Particle reinforced composites Titanium Tungsten Wear resistance resistant coatings Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Composite coatings containing manganese sulphide as lubricating addition and enhanced with hard carbide particles (TiC, WC) were synthesized on a plain steel substrate using the plasma transferred arc technique. The coatings are well bonded to the substrate, have a thickness of about 1 mm, and are free of any visual defects. They consist mainly of a martensitic or ferritic matrix enhanced with titanium or tungsten carbides and a dispersion of MnS particles. The tribological properties of the composites are assessed using a pin-on-disk device. Both composites possess self lubricating properties, due to the formation of a thin layer of manganese sulphide on their wear tracks. The corresponding friction coefficients vary between 0.25 and 0.28, compared with 0.50–0.60 obtained from similar hard coatings without MnS addition. The wear rates are of the order of 10−5 mm3/m N and are two orders of magnitude lower than those obtained from the substrate material with MnS addition, but without the presence of hard enhancing particles. The wear regime is mild abrasion due to the combined action of both lubricating (MnS) and hard (TiC or WC) particles. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...]

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