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Self-Healing in Carbon Nitride Evidenced As Material Inflation and Superlubric Behavior
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering. Univ Manchester, England.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-3203-7935
Univ Fed Bahia, Brazil.
Univ Fed Bahia, Brazil.
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2018 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 10, no 19, p. 16238-16243Article in journal (Refereed) Published
Abstract [en]

All known materials wear under extended mechanical contacting. Superlubricity may present solutions, but is an expressed mystery in C-based materials. We report negative wear of carbon nitride films; a wear-less condition with mechanically induced material inflation at the nanoscale and friction coefficient approaching ultralow values (0.06). Superlubricity in carbon nitride is expressed as C-N bond breaking for reduced coupling between graphitic-like sheets and eventual N-2 desorption. The transforming surface layer acts as a solid lubricant, whereas the film bulk retains its high elasticity. The present findings offer new means for materials design at the atomic level, and for property optimization in wear-critical applications like magnetic reading devices or nanomachines.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2018. Vol. 10, no 19, p. 16238-16243
Keywords [en]
superlubricity; carbon-based coatings; electron microscopy; wear; self-healing
National Category
Textile, Rubber and Polymeric Materials
Identifiers
URN: urn:nbn:se:liu:diva-148248DOI: 10.1021/acsami.8b03055ISI: 000432753800002PubMedID: 29715003OAI: oai:DiVA.org:liu-148248DiVA, id: diva2:1213395
Note

Funding Agencies|VINN Excellence Center Functional Materials [FunMat 2005-02987]; Swedish Research Council [348-2014-4249, 621-2012-4359, 621-2012-4420, 622-2008-405]; Swedish Foundation for Strategic Research [RMA11-0029]; FLAG-ERA JTC project GRIFONE; Carl Tryggers Foundation for Scientific Research [CTS 16:165]; Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials [SFO-Mat-LiU 2009-00971]; Knut and Alice Wallenberg Foundation [KAW 2008-0058, KAW 2011-0143]

Available from: 2018-06-04 Created: 2018-06-04 Last updated: 2018-06-04

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Bakoglidis, KonstantinosPalisaitis, JustinasPersson, Per O AGueorguiev, Gueorgui KostovHultman, Lars
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