DLC coatings on inner walls of PET bottles by a simplified PBII technique
✍ Scribed by M. Ikeyama; S. Miyagawa; S. Nakao; J. Choi; T. Miyajima
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 503 KB
- Volume
- 257
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
We have proposed a simple way to coat diamond-like carbon (DLC) on the inner walls of bottles using modified plasma based ion implantation (PBII) technique. Using this way, we have succeeded in DLC coating on inner walls of poly-(ethylene terephthalate) (PET) bottles. We have also succeeded in printing some characters, as ''AIST''. Meyer hardness and Young's modulus of the DLC-coated PET films were estimated from penetration depth-load relationship obtained by a depth sensing indenter with a diamond spherical-conical indenter (0.83 lm in radius and 90°in angle). It was revealed that Meyer hardness and Young's modulus increased with the DLC coatings. For the 5-min coated PET film, the Meyer hardness and Young's modulus were about 8 and 4 times larger than those of the uncoated PET film, respectively. The results of the indentation tests agreed well with the results of micro-scratch tests.