In Vitro Degradation of Absorbable Zinc Alloys in Artificial Urine

Materials

Maurizio Vedani¹  Ehsan Mostaed¹  Fariba Safizadeh²  Edward Ghali²  Sébastien Champagne²  Hendra Hermawan² 

[1] Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milan, Italy;Department of Mining, Metallurgical and Materials Engineering, Laval University, 1065 avenue de la Médecine, Québec, QC G1V 0A6, Canada;

关键词: absorbable;    corrosion;    degradation;    magnesium;    ureteral stent;    zinc;   

DOI  :  10.3390/ma12020295

来源: DOAJ

【 摘 要 】

Absorbable metals have potential for making in-demand rigid temporary stents for the treatment of urinary tract obstruction, where polymers have reached their limits. In this work, in vitro degradation behavior of absorbable zinc alloys in artificial urine was studied using electrochemical methods and advanced surface characterization techniques with a comparison to a magnesium alloy. The results showed that pure zinc and its alloys (Zn–0.5Mg, Zn–1Mg, Zn–0.5Al) exhibited slower corrosion than pure magnesium and an Mg–2Zn–1Mn alloy. The corrosion layer was composed mostly of hydroxide, carbonate, and phosphate, without calcium content for the zinc group. Among all tested metals, the Zn–0.5Al alloy exhibited a uniform corrosion layer with low affinity with the ions in artificial urine.

【 授权许可】

Unknown