id:"swepub:oai:DiVA.org:uu-191211"
Search: id:"swepub:oai:DiVA.org:uu-191211" > Extreme friction re...
- 1 of 1
- Previous record
- Next record
- To hitlist
Extreme friction reductions during inital running-in of W-S-C-Ti low-friction coatings
-
- Nyberg, Harald (author)
- Uppsala universitet,Tillämpad materialvetenskap,Ångströms Tribomaterialgrupp
-
- Sundberg, Jill (author)
- Uppsala universitet,Oorganisk kemi
-
- Särhammar, Erik (author)
- Uppsala universitet,Fasta tillståndets elektronik
- show more...
- Jansson, Ulf (author)
- show less...
- (creator_code:org_t)
- Elsevier, 2013
- 2013
- English.
- In: Wear. - : Elsevier. - 0043-1648 .- 1873-2577. ; 302:1-2 SI, s. 987-997
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The disulphides of tungsten and molybdenum are known for their low friction properties when used as solid lubricants. Due to their low hardness, their load bearing capacity when used as thin films is poor. When carbon is added to a WS2 coating, both of these shortcomings are improved, and a structure consisting of nanocrystals of WS2, and possibly tungsten carbide, in a matrix of amorphous carbon is formed. In this study, an attempt is made for further increasing the hardness of such coatings, by addition of Ti, a strong carbide former. A number of W–S–C(–Ti) coatings were deposited using magnetron co-sputtering, and characterised with regard to chemical composition, structure and tribological properties. It was seen that addition of Ti significantly increased the hardness of the coatings, while maintaining their excellent low friction properties in dry atmosphere. However, the coatings with Ti showed extremely high initial friction, a feature not seen for the coatings without Ti. The mechanisms behind this running-in behaviour were investigated by studying surfaces at early stages of wear. It was observed that tribofilms formed during sliding for the coatings containing Ti consisted mainly of TiO2, with platelets of WS2 appearing in the contact only after prolonged sliding. For the pure W–S–C coatings, WS2 was observed in the sliding interface almost instantly at the onset of sliding.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
Keyword
- Teknisk fysik med inriktning mot tribomaterial
- Engineering Science with specialization in Tribo Materials
- Engineering Science with specialization in Materials Science
- Teknisk fysik med inriktning mot materialvetenskap
- Engineering Science with specialization in Electronics
- Teknisk fysik med inriktning mot elektronik
Publication and Content Type
- ref (subject category)
- art (subject category)
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Nyberg, Harald
- Sundberg, Jill
- Särhammar, Erik
- Gustavsson, Fred ...
- Kubart, Tomas
- Nyberg, Tomas
- show more...
- Jansson, Ulf
- Jacobson, Staffa ...
- show less...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Nano technology
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Mechanical Engin ...
- and Tribology
- Articles in the publication
- Wear
- 19th Internation ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
