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Superhard and superelastic films of polymeric C60
Dept of Inorganic Chemistry , Ångström Lab Uppsala university.
Theoretical Geochemistry Program; Inst of Eart Sciences Uppsala university.
Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering, Engineering Materials.ORCID iD: 0000-0002-2286-5588
Dept of Inorganic Chemistry, Ångström Lab Uppsala University.
2001 (English)In: Diamond and related materials, ISSN 0925-9635, E-ISSN 1879-0062, Vol. 10, no 11, 2044-2048 p.Article in journal (Refereed) Published
Abstract [en]

The C60 thin film deposited on steel substrate was transformed by high pressure-high temperature treatment to a superhard and superclastic material. The films were studied by Raman spectroscopy in situ at 20 GPa after heating at 300░C and ex situ after the quenching. The hardness and elastic properties of the high-pressure phases have been characterized with nanoindentation. The hardness of the films were determined to be 0.5 ▒ 0.1 GPa and 61.9 ▒ 9 GPa for unmodified C60 and HPHT treated films, respectively. The hardness of the pressurized film is higher than for cubic BN but lower than hardness values reported for ultrahard fullerite samples prepared from powders. An interesting observation was that the HPHT treated film showed an extreme elastic response with an elastic recovery of approximately 90%. ⌐ 2001 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
2001. Vol. 10, no 11, 2044-2048 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-30194DOI: 10.1016/S0925-9635(01)00479-4Local ID: 15687OAI: oai:DiVA.org:liu-30194DiVA: diva2:251016
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-12-13

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