Authors
- Mohammad Reza Derakhshandeh 1
- Mohammad Javad Eshraghi 2
- Seyed Mohammad Mehdi Hadavi 3
- Masoud Mozafari 3
- Masoumeh Javaheri 1
1 Materials and Energy Research Center, Department of ceramic, Karaj, Iran.
2 Materials and Energy Research Center, Department of semiconductors, Karaj, Iran.
3 Materials and Energy Research Center, Department of Nano and Advanced Materials, Karaj, Iran.
Abstract
In this research diamond-like carbon (DLC) films were deposited on AISI316L stainless steel by plasma enhanced chemical vapor deposition (PECVD) method. In order to improve adhesion of the coating, plasma nitrocarbuizing method was performed on substrates before DLC deposition. Raman spectra of the coating showed that sp3 fraction of the film was 39%. Biological properties of the uncoated, plasma nitrocarburized and DLC coated samples were analyzed. MTT results showed that 316L stainless steel didn’t have appropriate biocompatibility and nitrocarburizing process and DLC deposition improved the biocompatibility of the samples due to preventing the release of toxic elements such as nickel. Cell viability of the uncoated, plasma nitrocarburized and DLC coated samples was about 29%, 40% and 71% respectively.
Keywords
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