Abstract
The elastoplastic properties and fracture strength of thick diamond like carbon films (with thickness over 10μm) 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. © 2009 Elsevier B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 40-49 |
| Number of pages | 10 |
| Journal | Diamond and Related Materials |
| Volume | 19 |
| Issue number | 1 |
| Early online date | 28 Oct 2009 |
| DOIs | |
| Publication status | Published - Jan 2010 |
| Externally published | Yes |
Bibliographical note
The work of A.Y. is supported in part of Grant-in-Aid for Young Scientist of (B) (No. 19760075) of the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant of General Research for Electricity & Energy of TEPCO Research Foundation, and Research Grant (AF- 2008036) of AMADA Foundation for Metal Work Technology. The work of X.C. is supported by National Science Foundation CMMI- 0407743 and CMMI-CAREER- 0643726, and by National Natural Science Foundation of China (50928601).Keywords
- Diamond like carbon film
- Elastoplastic properties
- Fracture strength
- Indentation