| 학회 | 한국재료학회 |
| 학술대회 | 2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 | 15권 2호 |
| 발표분야 | D. Health and Biological Materials(생체 및 의용재료) |
| 제목 | Surface Morphology of Femtosecond Laser Textured Ti Ternary Alloy |
| 초록 | The Ti alloys are intensively applied in the manufacturing of biomedical devices where the most important factors are, firstly, biocompatibility, corrosion resistance, mechanical behavior and osseointegration. Recently, some studies have focused on the development of vanadium and aluminum free Ti alloys since they exhibit high cytotoxicity and negative tissue response in vivo and may induce to senile dementia, neurological disorders and allergic reactions. It has been reported that, β rich Ti-Nb-Zr alloys are better substitutes, as these materials possess low modulus and consists of non toxic elements in Ti-Nb-Zr alloy. From the bone-metal surface, the improvement of this interface is still an open problem. Since the main target is to enhance the development of strong bonds, ceramic and biological coatings have been widely investigated as a means to improve metal osseointegration. Using femtosecond laser techniques for roughening the implants surface, contamination is avoided, because the laser enables implant surface treatment without direct contact, and an easier control of the micro topography is achieved. The aim of in this study was to investigate the surface morphology of femtosecond laser textured Ti-35Nb-xZr alloys. The surface roughness treatment was irradiated using the femto second laser in ambient air. The microstructure and phase transformation were examined by SEM and XRD, respectively. The surface characteristics of laser textured surface were performed by roughness and wettability test. In order to evaluate the corrosion behavior, corrosion tests were performed by potentiodynamic and AC impedance test. It was found that laser textured Ti-35Nb-xZr alloys have a biocompatibility and good corrosion resistance due to appropriate surface roughness and stable oxide layer. ([email protected]) (Acknowledgement, NRF-2009-0074672) |
| 저자 | 정용훈1, 최한철2, 고영무1, 최해운2, 손익부1 |
| 소속 | 1조선대, 2생체재료나노계면활성화센터 |
| 키워드 | femtosecond laser; Ti ternary alloy; surface modification; osseointegration |
