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Lookup NU author(s): Professor Steve BullORCiD
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A number of workers have reported the degradation of hydrogenated diamond-like carbon films at elevated temperatures - generally graphitisation rapidly occurs at temperatures above 250°C. However, changes in properties due to structural relaxation at lower temperatures have been much less well studied. The residual stress measured in an ion-beam-assisted diamond-like carbon (DLC) film is much greater just after deposition than when remeasured some months later. Nanoindentation measurements on DLC films produced by ion-beam-assisted deposition and plasma-assisted chemical vapour deposition have been made within a few weeks of coating and then repeated after allowing the coatings to age for several years. There is a reduction in both the hardness and the Young's modulus of the coating. These results are discussed in light of the structure of DLC and how this changes during ageing.
Author(s): Bull SJ, Hainsworth SV
Publication type: Article
Publication status: Published
Journal: Surface and Coatings Technology
Year: 1999
Volume: 122
Issue: 2-3
Pages: 225-229
ISSN (print): 0257-8972
ISSN (electronic):
Publisher: Elsevier
URL: http://dx.doi.org/10.1016/S0257-8972(99)00300-X
DOI: 10.1016/S0257-8972(99)00300-X
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