{"title":"Degradation Behavior of Zn–Cu Stents with Different Coatings in Sodium Chloride Solution","authors":"Xingpeng Liao, Jialuo Huang, Zhilin Liu, Jingru Guo, Dajiang Zheng, Pengbo Chen, Fuyong Cao","doi":"10.1007/s40195-024-01721-0","DOIUrl":null,"url":null,"abstract":"<div><p>The Zn0.6Cu wires are fabricated into stents for the potential biodegradable application of nasal wound healing. The degradation behavior of Zn0.6Cu stents in 0.9 wt% NaCl at 36.5 °C is evaluated. It shows that the untreated Zn0.6Cu stent experiences severe crevice corrosion with acceleration and autocatalytic effects within the micro-cracks and ruptures at 4.67 ± 1.15 d, with the average corrosion rate of 0.28 mm y<sup>−1</sup>. Fortunately, the anodic polarization (AP) + hydrothermal (H) conversion coating, consisting of ZnCO<sub>3</sub>, Zn(OH)<sub>2</sub> and ZnO, could inhibit the crevice corrosion significantly by reducing the cathode/anode ratio, extending the rupture time up to 16.50 ± 2.95 d, with the average corrosion rate of 0.14 mm y<sup>−1</sup>. This research indicates that the biodegradable Zn-based stent has some potential applications in nasal wound recovery area.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 9","pages":"1564 - 1580"},"PeriodicalIF":2.9000,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica Sinica-English Letters","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1007/s40195-024-01721-0","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
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Abstract
The Zn0.6Cu wires are fabricated into stents for the potential biodegradable application of nasal wound healing. The degradation behavior of Zn0.6Cu stents in 0.9 wt% NaCl at 36.5 °C is evaluated. It shows that the untreated Zn0.6Cu stent experiences severe crevice corrosion with acceleration and autocatalytic effects within the micro-cracks and ruptures at 4.67 ± 1.15 d, with the average corrosion rate of 0.28 mm y−1. Fortunately, the anodic polarization (AP) + hydrothermal (H) conversion coating, consisting of ZnCO3, Zn(OH)2 and ZnO, could inhibit the crevice corrosion significantly by reducing the cathode/anode ratio, extending the rupture time up to 16.50 ± 2.95 d, with the average corrosion rate of 0.14 mm y−1. This research indicates that the biodegradable Zn-based stent has some potential applications in nasal wound recovery area.
期刊介绍：
This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.
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