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Tribological characteristics of MoS2–Nb solid lubricant film in different tribo-test conditions by Ihsan Efeoglu; Özlem Baran; Fatih Yetim; Sabri Altıntaş is a Engineering article available to read on EtoBox.

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MoS 2 coatings lose their lubricating properties through mechanisms that depend on atmospheric conditions. The tribological performance at the different atmospheres of MoS 2 solid lubricant films have been improved by the co-deposition of a small amount of metal. In this study, we investigated the tribological properties of MoS 2 co-sputtered with Nb. MoS 2 -Nb solid lubricant composite film was deposited on AISI 52100 steel substrates and silicon wafers by closed field unbalanced magnetron sputtering (CFUBMS). Composition, morphology and structure were analyzed by a variety of techniques including EDS, SEM, and XRD. The friction and wear properties of air, dry nitrogen, distillated water and oil were determined using pin-on disc tribo-tester. Friction coefficient (COF) and wear rate obtained in dry nitrogen as maximum and in oil as minimum. MoS 2 -Nb films exhibited one type of crystallite orientation and characteristic dense structure. Also there is a sign of the humidity sensitive NbS 2 phase which was displayed better lubricating properties in the humid air than in the dry nitrogen conditions.

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Author

Ihsan Efeoglu; Özlem Baran; Fatih Yetim; Sabri Altıntaş

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0257-8972)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)