한국주조공학회지 (Journal of Korea Foundry Society)

  • 제35권6호
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  • Pages.155-162
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  • 2015
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  • 1598-706X(pISSN)
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  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
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생체 분해성 임플란트용 Mg-Zn-Ca 합금의 기계적 및 부식특성에 미치는 Sr 첨가의 영향

Effect of Sr Addition on Mechanical and Corrosion Properties of Mg-Zn-Ca Alloy for Biodegradable Implant Material

  • Kong, Bo-Kwan (Department of Materials Science and Engineering, Pusan National Univ.) ;
  • Cho, Dae-Hyun (Department of Materials Science and Engineering, Pusan National Univ.) ;
  • Yun, Pil-Hwan (Green Manufacturing 3Rs R&D Group, Korea Institute of Industrial Technology) ;
  • Lee, Jeong-Hun (Green Manufacturing 3Rs R&D Group, Korea Institute of Industrial Technology) ;
  • Park, Jin-Young (Green Manufacturing 3Rs R&D Group, Korea Institute of Industrial Technology) ;
  • Park, Ik-Min (Department of Materials Science and Engineering, Pusan National Univ.)
  • 투고 : 2015.05.25
  • 심사 : 2015.10.23
  • 발행 : 2015.12.31
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초록

The effect of Sr addition on mechanical and bio-corrosion properties of as-cast Mg-3wt.%Zn-0.5wt.%Ca-xwt.%Sr (x = 0.3, 0.6, 0.9) alloys were examined for application as biodegradable implant material. The microstructure, mechanical properties and corrosion resistance of the as-cast Mg-Zn-Ca-Sr alloys were characterized by using optical microscopy, scanning electron microscopy, tensile testing and electrochemical measurement in Hank's solution. The as-cast alloys contained ${\alpha}$-Mg and eutectic $Ca_2Mg_6Zn_3$ phases, while the alloys contained ${\alpha}$-Mg, $Ca_2Mg_6Zn_3$ and Mg-Zn-Ca-Sr intermetallic compound when the Sr addition was more than 0.3 wt.%. The yield strength, ultimate tensile strength and elongation increased with the increasing of Sr content up to 0.6 wt.% but decreased in the 0.9 wt.% Sr-added alloy, whereas the corrosion resistance of 0.3 wt.% Sr-added alloy was superior to other alloys. It was thought that profuse Mg-Zn-Ca-Sr intermetallic compound deteriorated both the mechanical properties and corrosion resistance of the as-cast alloy.

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참고문헌

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피인용 문헌

  1. Grain Refinement를 통한 Mg-Ca-Zn합금의 기계적 특성 및 부식 특성 향상 vol.18, pp.9, 2017, https://doi.org/10.5762/kais.2017.18.9.418