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Tribological behaviors of PTFE-based composites filled with nanoscale lamellar structure expanded graphite / Yu-lin Yang in Transactions of the ASME . Journal of tribology, Vol. 132 N° 3 (Juillet 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 132 N° 3 (Juillet 2010) . - 07 p. Titre : Tribological behaviors of PTFE-based composites filled with nanoscale lamellar structure expanded graphite Type de document : texte imprimé Auteurs : Yu-lin Yang, Auteur ; Zhi-ning Jia, Auteur ; Jin-jiang Chen, Auteur Année de publication : 2011 Article en page(s) : 07 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Field  emission  electron  microscopy  Filled  polymers  Friction  Graphite  Nanocomposites  Scanning  electron  microscopy  Surface  morphology  Wear  resistance Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper provides a polytetrafluoroethylene (PTFE)/nano-EG solid self-lubricating composite that exhibits very low friction coefficient and wear rate. In present study, the influences of the content of expanded graphite with nanoscale lamellar structure (nano-EG) in PTFE/nano-EG composite, normal contact pressure, and sliding velocity on tribological properties were studied by using the MMU-5G friction and wear tester sliding against AISI-1045 steel. Meanwhile, the property of nano-EG was characterized by utilizing a field emission scanning electron microscope. Compared with that of pure PTFE, the addition of nano-EG into PTFE matrix effectively improved the antifriction and wear resistance properties of PTFE/nano-EG composite. The highest wear resistance was found for the PTFE/nano-EG composite filled with 15 wt % nano-EG. The morphologies of worn surface of the ANSI-1045 steel and composites were observed using a confocal laser scanning microscopy (CLSM) and a scanning electron microscope (SEM) to examine composite microstructures and to study modes of failure. The images of CLSM and SEM indicate that the property of transfer film generated on the surface of mating pair is likely responsible for the lower wear rate observed in these experiments. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...] [article] Tribological behaviors of PTFE-based composites filled with nanoscale lamellar structure expanded graphite [texte imprimé] / Yu-lin Yang, Auteur ; Zhi-ning Jia, Auteur ; Jin-jiang Chen, Auteur . - 2011 . - 07 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 132 N° 3 (Juillet 2010) . - 07 p. Mots-clés : Field  emission  electron  microscopy  Filled  polymers  Friction  Graphite  Nanocomposites  Scanning  electron  microscopy  Surface  morphology  Wear  resistance Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper provides a polytetrafluoroethylene (PTFE)/nano-EG solid self-lubricating composite that exhibits very low friction coefficient and wear rate. In present study, the influences of the content of expanded graphite with nanoscale lamellar structure (nano-EG) in PTFE/nano-EG composite, normal contact pressure, and sliding velocity on tribological properties were studied by using the MMU-5G friction and wear tester sliding against AISI-1045 steel. Meanwhile, the property of nano-EG was characterized by utilizing a field emission scanning electron microscope. Compared with that of pure PTFE, the addition of nano-EG into PTFE matrix effectively improved the antifriction and wear resistance properties of PTFE/nano-EG composite. The highest wear resistance was found for the PTFE/nano-EG composite filled with 15 wt % nano-EG. The morphologies of worn surface of the ANSI-1045 steel and composites were observed using a confocal laser scanning microscopy (CLSM) and a scanning electron microscope (SEM) to examine composite microstructures and to study modes of failure. The images of CLSM and SEM indicate that the property of transfer film generated on the surface of mating pair is likely responsible for the lower wear rate observed in these experiments. DEWEY : 621.5 ISSN : 0742-4787 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JOTRE900013 [...]