DLC exhibits an extreme hardness, chemical stability and optical transparency properties, which are, to a certain extent, similar to those of diamond and thus of technological importance. In the case of amorphous hydrogenated carbon (a-C:H) films they can be interpreted as intermediate between diamond, graphite, and polymer-like carbon sites. The most important intrinsic hardness is protection of tools or machine parts against wear. Most modifications have been used on DLC to enhanced mechanical properties, such as reducing its internal compressive stress (N, Si, and metal incorporation), or to reduce its surface energy for further lowering of its already low friction coefficient with 0.1. Among various deposition techniques, microwave generated discharges, especially electron cyclotron resonance (ECR) plasmas, develop excellent a high degree of ionization, high ions densities.
In this work, a novel hybrid technique for diamond-like carbon (DLC) film deposition has been developed, which combines the microwave ECR plasma discharging C2H2 and metallic magnetron sputtering. The effects of negative bias voltage and hydrocarbon flow rate for the deposition of a-C:H films on high speed steel were examined by Raman spectra, and their hardness was investigated by the Rockwell method. The Raman spectra show that at different hydrocarbon flow rate, the variation of the G line peak and width, and the integrated intensity ratio ID/IG of DLC and graphic, correlate well with the film hardness. Consequently, we suggest a deposition mechanism of DLC for this combined method.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0709102-210128 |
| Date | 09 July 2002 |
| Creators | Chang, Jen-Fung |
| Contributors | Cheu-Pyeng Cheng, Wang-Chuang Kuo, Tai-Fa Young, Herng-Yih Ueng, Mau-Phon Houng, Wei-Chou Hsu, Yeong-Her Wang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0709102-210128 |
| Rights | unrestricted, Copyright information available at source archive |
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