Tribochemically Active Ti–C–S Nanocomposite Coatings
2013 (English)In: Materials Research Letters, ISSN 2166-3831, Vol. 1, no 3, 148-155 p.Article in journal (Refereed) Published
We demonstrate a new concept of self-adaptive materials, where sulphur is incorporated into TiC/a-C coatings and may be released in, for example, a tribological contact. By reactive sputtering with H2S, sulphur goes into the carbide to form a TiC x S y phase in an amorphous carbon matrix. The addition of sulphur lowers the friction against steel. Significantly lower friction is obtained against a tungsten counter-surface, as WS2 is generated in the contact. Annealing experiments and formation energy calculations confirm that sulphur can be released from TiC x S y . Ti–C–S coatings are thus chemically active in tribological contacts, creating possibilities of new low-friction systems.
Place, publisher, year, edition, pages
Taylor & Francis, 2013. Vol. 1, no 3, 148-155 p.
Inorganic Chemistry Tribology
Research subject Inorganic Chemistry; Engineering Science with specialization in Materials Science; Engineering Science with specialization in Electronics
IdentifiersURN: urn:nbn:se:uu:diva-202064DOI: 10.1080/21663831.2013.802262OAI: oai:DiVA.org:uu-202064DiVA: diva2:630790
FunderSwedish Foundation for Strategic Research