Effect of Tin Addition on the Degradability and Corrosion Properties of a New Zn-1.0 wt.% Mg Alloy

• Published in: Archives of metallurgy and materials 2022-01, Vol.67 (4), p.1209-1216
• Main Authors: Long, Zhouling, Lang, Haiyang, Ou, Jun
• Format: Article
• Language: English
• Subjects: Biocompatibility; Biomedical materials; Corrosion; Corrosion effects; degradability; Degradation; Electrodes; Elongation; Fractures; hemolysis rate; Human body; Magnesium; Materials science; mechanical and corrosion properties; Mechanical properties; Medical research; Orthopedics; Raw materials; Surgical implants; Tensile strength; Tin; Tin base alloys; Titanium alloys; Transplants & implants; Zinc; Zinc base alloys; zn-1mg alloy
• ISSN: 1733-3490; 2300-1909
• DOI: 10.24425/amm.2022.141044

In this study, to investigate effects of tin addition on the microstructures and corrosion properties, Zn-1Mg-xSn (x = 1.0, 2.0 and 5.0 wt.%) ternary zinc alloys were prepared. The experimental results indicated that the Zn-1Mg-2.0 wt.% Sn alloy has the better mechanical properties compared with pure zinc and Zn-1Mg alloy. The tensile strength of the alloy material is 173.2±3.7 MPa, the yield strength is 120.7±2.4 MPa, the elongation is 5.64±0.08% and the hardness is 76.9±0.8 HV. The average degradation rate of the alloys immersion in SBF solution for 60 days is 0.16±0.03 mm/year, and the Zn-1Mg-2.0 wt.% Sn alloy hemolysis rate is only 0.81±0.02%. It is confirmed that the addition of tin is effective to improve the mechanical properties and degradation of Zn-1Mg alloy. It may be a candidate of the clinical application requirements of the degradable implant materials in orthopedics.