Journal
DIAMOND AND RELATED MATERIALS
Volume 19, Issue 1, Pages 40-49Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2009.10.019
Keywords
Diamond like carbon film; Elastoplastic properties; Indentation; Fracture strength
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [19760075]
- TEPCO Research Foundation
- AMADA Foundation [AF-2008036]
- National Science Foundation [CMMI-0407743, CMMI-CAREER-0643726]
- National Natural Science Foundation of China [50928601]
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The elastoplastic properties and fracture strength of thick diamond like carbon films (with thickness over 10 mu m) are studied An indentation-based framework is outlined where the dual sharp shallow micro indentation method is employed to measure the elastoplastic properties of the film and the substrate; next. integrated acoustic emission and corrosion potential fluctuation techniques are employed to characterize the ring cracks formed due to deep spherical indentation The fracture strength of the DLC film is obtained from parallel numerical simulations with the identified elastoplastic properties. It is found that the thick DLC film prepared by using the plasma-based ion implantation method has better fracture property than thin DLC films in previous studies. (C) 2009 Elsevier B.V. All rights reserved
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