School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China.
Biomater Sci. 2024 Sep 25;12(19):4957-4966. doi: 10.1039/d4bm00965g.
Crevice corrosion at the implantation sites cannot be neglected in clinical applications of biodegradable zinc alloys as implants. In this study, a crevice corrosion protocol was designed to investigate the crevice corrosion behavior of the Zn-0.45Mn-0.2Mg (ZMM42) alloy for the first time, by varying crevice thicknesses in simulated body fluid (SBF) through immersion and electrochemical analysis. The results indicated that the ZMM42 alloy was susceptible to crevice corrosion in the range from 0.03 mm to 0.2 mm. When the crevice thickness was 0.05 mm, the crevice corrosion of the specimen became more severe compared to other thicknesses.
在可生物降解锌合金作为植入物的临床应用中，不能忽视植入部位的缝隙腐蚀。在这项研究中，通过在模拟体液（SBF）中浸泡和电化学分析，首次设计了一个缝隙腐蚀方案来研究 Zn-0.45Mn-0.2Mg（ZMM42）合金的缝隙腐蚀行为，通过改变缝隙厚度。结果表明，ZMM42 合金在 0.03 毫米到 0.2 毫米的范围内容易发生缝隙腐蚀。当缝隙厚度为 0.05 毫米时，与其他厚度相比，试样的缝隙腐蚀变得更加严重。
