Choi, Heon Woong Lee, Kwang-Ryeol Park, Se Jun Wang, Rizhi Kim, Jung-Gu Oh, Kyu Hwan 2024-01-20T23:33:33Z 2024-01-20T23:33:33Z 2021-09-03 2008-03-15 0257-8972 https://pubs.kist.re.kr/handle/201004/133649 We have investigated the effect of plastic deformation of diamond-like carbon (DLC) coated and uncoated stainless steel on the corrosion resistance in a simulated body fluid environment to measure its protective efficiency as a biomedical coating material. We deposited the DLC film on 304 stainless steel specimens by radio frequency plasma assisted chemical vapor deposition(R.F.-PACVD) method, followed by a tensile test to apply plastic strain on the coated specimen. Corrosion behavior in the simulated body fluid environment was studied by a potentiodynamic polarization test. As the tensile deformation progressed, the cracks of the film were observed to be perpendicular to the tensile axis. Further deformation increased both cracking and the spallation. Estimated porosity and corrosion current density increased, and thus the protective efficiency decreased at a strain of 2%. In spite of the degradation, the anti-corrosion properties were significantly improved relative to the uncoated stainless steel. However, a significant increase in porosity and corrosion current density was observed at a strain of 4%. This study showed that increasing the thickness of the Si interlayer of film improved the corrosion resistance with reduction of spallations and cracks. (C) 2007 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA DLC-COATINGS BIOMEDICAL APPLICATIONS ION-IMPLANTATION HARD COATINGS NITI ALLOYS THIN-FILMS HEMOCOMPATIBILITY PERFORMANCE TITANIUM DEPOSITION Effects of plastic strain of diamond-like carbon coated stainless steel on the corrosion behavior in simulated body fluid environment Article 10.1016/j.surfcoat.2007.09.046 1 SURFACE & COATINGS TECHNOLOGY, v.202, no.12, pp.2632 - 2637 SURFACE & COATINGS TECHNOLOGY 202 12 2632 2637 scie scopus 000254367800016 2-s2.0-44249093300 Materials Science, Coatings & Films Physics, Applied Materials Science Physics Article DLC-COATINGS BIOMEDICAL APPLICATIONS ION-IMPLANTATION HARD COATINGS NITI ALLOYS THIN-FILMS HEMOCOMPATIBILITY PERFORMANCE TITANIUM DEPOSITION diamond-like carbon (DLC) mechanical stability tensile test potentiodynamic polarization test