플라즈마 전해산화공정을 이용한 Mg95Zn4.3Y0.7 합금분말 성형체의 표면특성제어
Surface Treatment of Mg95Zn4.3Y0.7 Alloy Powder Consolidates using Plasma Electrolytic Oxidation.
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The investigation is to modify the mechanical and chemical properties of Mg alloys using a com-bination of rapid solidification and surface treatment. As the first approach, Mg95Zn4.3Y0.7 was gas atomized andpressure sintered by spark plasma sintering process (SPS), showing much finer microstructure and higher strengththan the alloys as cast. Further modification was performed by treating the surface of PM Mg specimen usingPlasma electrolytic oxidation (PEO) process. During the PEO processing, MgO layer was initiated to form on thesurface of Mg powder compacts, and the thickness and the density of MgO layer were varied with the reactiontime. The thickening rate became low with the reaction time due to the limited diffusion rate of Mg ions. The sur-face morphology, corrosion behavior and wear resistance were also discussed.
Abstract
The investigation is to modify the mechanical and chemical properties of Mg alloys using a com-bination of rapid solidification and surface treatment. As the first approach, Mg95Zn4.3Y0.7 was gas atomized andpressure sintered by spark plasma sintering process (SPS), showing much finer microstructure and higher strengththan the alloys as cast. Further modification was performed by treating the surface of PM Mg specimen usingPlasma electrolytic oxidation (PEO) process. During the PEO processing, MgO layer was initiated to form on thesurface of Mg powder compacts, and the thickness and the density of MgO layer were varied with the reactiontime. The thickening rate became low with the reaction time due to the limited diffusion rate of Mg ions. The sur-face morphology, corrosion behavior and wear resistance were also discussed.
참고문헌 (8)
- H. Guo, , Mater.Letters, 60, pp.1538~ (2006)
- T. Wei, , J. Alloys Comp, 389, pp.169~ (2005)
- A. L. Yerokhin, , Coat. Tech.Surf, 182, pp.78~ (2004)
- 임현규, "주조용 합금으로서 Mg-Zn-Y-X (X=Al or Mm) 합금의 주조성 및 크리프 성질에 관한 연구", 한국주조공학회지, 26(1), pp.34~39 (2006), 한국주조공학회
- ae Seon Park, "Mechanical Properties and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings on AZ31 Magnesium Alloy", CORROSION SCIENCE AND TECHNOLOGY, 5(2), pp.77~83 (2006), 한국부식방식학회
- M. Nishida, , Mater. Sci. Eng. A, 375, pp.1217~ (2004)
- J. K. Lee, , Mater. Sci. Forum, 통권 : 534, pp.833~ (2007)
- 채홍준, "가스분무 Mg-Zn-Y 합금분말 및 압출재의 특성", 한국분말야금학회지, 13(6), pp.427~431 (2006), 한국분말야금학회