논문 해외 국제전문학술지(SCI급) LASER SURFACE MODIFICATION OF TI AND TIC COATINGS ON MAGNESIUM ALLOY
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2014-12
- 저자명 김정민공동(제1),KIM, HG (KIM, H. G.),PARK, JS (PARK, J. S.),LEE, SG (LEE, S. G.)
- 학술지명 PHYSICS OF METALS AND METALLOGRAPHY
- 발행처명 INTERPERIODICA
- 발행국가 해외
- 논문언어 외국어
홈페이지논문 초록 (Abstract)
In order to enhance the surface properties of magnesium alloy, a highly intense laser surface melting process following plasma spraying of Ti or TiC on AZ31 alloy were employed. When laser surface melting was applied to Ti coated magnesium alloy, the formation of fine Ti particle dispersed surface layer on the substrate occurred. The corrosion potential of the AZ31 alloy with Ti dispersed surface was significantly increased in 3.5 wt % NaCl solution. Additionally, an improved hardness was observed for the laser treated specimens as compared to the untreated AZ31 alloy. Laser melting process following plasma thermal deposition was also applied for obtaining in situ TiC coating layer on AZ31 alloy. The TiC coating layer could be successfully formed via in situ reaction between pure titanium and carbon powders. Incomplete TiC formation was observed in the plasma sprayed specimen, while completely transformed TiC layer was found after post laser melting process. It was also confirmed that the laser post treatment induced enhanced adhesion strength between the coating and the substrate.