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MG-63 Cell Response on the Mg Ion Implanted Titanium
변응선,현용택,전상조,정용수 한국생체재료학회 2008 생체재료학회지 Vol.12 No.4
Magnesium ions were implanted onto the surface of commercially pure titanium using a vacuum arc plasma ion implantation device. As-polished Ti plates and resorbable blast media (RBM) blasted Ti plates were prepared for Mg ions implantation. The implantation energy was 15 keV, and the retained dose was about 2.3x1016 ions/cm2. After implantation, MG-63 osteoblast-like cells were seeded on Mg ion implanted specimens immersed in DMEM with 10% FBS and 1% P/S in order to investigate celluar activities, such as cell attachment and proliferation characteristics. There were significant improvement of cell attachment and proliferation with p<0.05 for the RBM treated and Mg ion implanted specimen, and it might indicate the potential of enhancement of bone response.
캐비테이션-에로젼 특성에 미치는 HVOF 용사조건의 영향
변응선,유인준,이규환,박율민 한국표면공학회 2009 한국표면공학회 학술발표회 초록집 Vol.2009 No.10
캐비테이션-에로젼은 침식부식과 유사한 형태의 침식에 의한 손상이다. 즉, 고속의 애체흐름에 노출된 금속 표면을 따라 압력변화에 의해서 생성된 기포들이 파괴되는 것과 관련하여 일어나는 표면손상의 한 형태이다 . 본 연구에서는 캐비테이션-에로젼 손상을 억제하기 위하여 WC 서멧을 HVOF 용사하였으며, 캐비테이션-에로젼 특성에 미치는 용사조건의 영향에 중점을 비교분석하였다.
질소이온 주입이 생체적합성 티타늄 임플란트의 마모특성에 미치는 영향
변응선,김동수,이구현,정용수,Byeon, Eung-Seon,Kim, Dong-Su,Lee, Gu-Hyeon,Jeong, Yong-Su 한국기계연구원 2000 硏究論文集 Vol.30 No.-
Since the concept of osseointegration was introduced, titanium and titanium-based alloy materials have been increasingly used for bone-anchored metal in oralmaxillofacial and orthopedic reconstruction. Successful osseointegration has been attributed to biocompatibility and surface condition of metal implant among other factors. Although titanium and titanium alloys have an excellent over the metal ion release and biocompatibility, considerable controversy has developed over the metal ion and wear debris in vivo and vitro. In this study, nitrogen ion implantation technique was used to improve the corrosion resistance and wear property of titanium materials, ultimately to enhance the tissue reaction to titanium implants As ion implantation energy was increased, projected range of nitrogen ion the Ti substrate was gradually increased. Under condition of constant ion energy. atomic concentration of nitrogen was also increased with ion doses. The friction in Hank's solution was increased with ion doses. The friction coefficient of ion implanted specimens in HanK's solution was increased from 0.39, 0.47 to 0.52, 0.65 respectively under high energy and ion dose conditions. As increasing ion energies and ion dose, amount of wear was reduced.