Acta Metallurgica Sinica (English Letters) ›› 2020, Vol. 33 ›› Issue (4): 500-513.DOI: 10.1007/s40195-019-00995-z

• Orginal Article • Previous Articles     Next Articles

Effect of Alloyed Mo on Mechanical Properties, Biocorrosion and Cytocompatibility of As-Cast Mg-Zn-Y-Mn Alloys

Longlong Zhang1,2, Yatong Zhang1,2, Jinshan Zhang1,2(), Rui Zhao1,2, Jiaxin Zhang1,2, Chunxiang Xu1,2   

  1. 1 College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
    2 Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan, 030024, China
  • Received:2019-09-03 Revised:2019-10-15 Online:2020-04-10 Published:2020-04-15
  • Contact: Jinshan Zhang jinshansx@tom.com

Abstract:

The influences of Mo contents on mechanical properties, biocorrosion and cytocompatibility of as-cast Mg-6Zn-8.16Y-2.02Mn-xMo (x = 0.0, 0.1, 0.3, 0.5, 0.7 wt%) alloys were firstly investigated. Appropriate amount of Mo was conducive to grain refinement and the formation of long-period stacking ordered structure with continuous distribution, which was advantageous to mechanical properties and corrosion resistance. Mg-6Zn-8.16Y-2.02Mn-0.3Mo exhibited the ultimate tensile strength of 265.0 MPa, elongation of 13.5% and the lowest weight loss rate in Hank’s solution. Moreover, the cell toxicity cultured in 25% extract was evaluated and the alloy with 0.3 wt% Mo exhibited the best cytocompatibility. Thus, the alloy was expected to become a novel biodegradable implant material.

Key words: Magnesium alloy, Mo, Corrosion, Cytocompatibility, Mechanical properties