期刊信息
  • 主管单位:
  • 上海市科学技术协会
  • 主办单位:
  • 上海有色金属学会
    上海理工大学
  • 名誉主编:
  • 陈兴章
  • 主    编:
  • 刘 平
  • 地    址:
  • 上海市军工路516号
  • 邮政编码:
  • 200093
  • 联系电话:
  • (86)021-55781550
  • 电子邮件:
  • nmme@usst.edu.cn
  • 国际标准刊号:
  • 2096-2983
  • 国内统一刊号:
  • 31-2125/TF
  • 单    价:
  • 8.00
  • 定    价:
  • 60.00
董旭,耿芳,马凤仓,李伟,张柯.可降解Zn-Li合金吻合钉的自然时效与降解机制研究[J].有色金属材料与工程,2024,45(3):38-45.
可降解Zn-Li合金吻合钉的自然时效与降解机制研究
Research on natural aging and degradation mechanism of degradable Zn-Li alloy staple
  
DOI:10.13258/j.cnki.nmme.20230504001
中文关键词:  生物医用材料  吻合钉  自然时效  体外降解  生物可降解金属
英文关键词:biomedical materials  surgical staple  natural aging  in vitro degradation  biodegradable metals
基金项目:国家自然科学基金资助项目(51771119);上海市自然科学基金资助项目(17ZR1419600)
作者单位E-mail
董旭 上海理工大学 材料与化学学院上海 200093  
耿芳 美敦力(上海)有限公司上海 201100  
马凤仓 上海理工大学 材料与化学学院上海 200093 mafengcang@163.com 
李伟 上海理工大学 材料与化学学院上海 200093  
张柯 上海理工大学 材料与化学学院上海 200093  
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全文下载次数: 52
中文摘要:
      作为力学性能良好,降解速率适中的可降解金属,Zn基合金的应用前景十分广阔。研究了自然时效对Zn-Li合金性能的影响以及Zn-Li合金吻合钉的体外降解机制。通过拉伸试验和电化学试验分析时效时间对Zn-Li合金丝力学性能和耐蚀性的影响。采用浸泡实验,根据吻合钉质量变化分析不同模拟液对Zn-Li吻合钉降解速率的影响,采用扫描电子显微镜分析Zn-Li吻合钉不同部位的降解模式。结果表明,时效2.0 a的Zn-Li合金丝比时效1.0 a的拉伸强度低43.86 MPa,伸长率下降24.17%,腐蚀电势由?1.07 V下降至?1.12 V,腐蚀电流密度增加13%。Zn-Li吻合钉在模拟体液中降解速率最大,钉脚的微电偶腐蚀为最严重的腐蚀形式。
英文摘要:
      As biodegradable metals with good mechanical properties and moderate degradation rate, Zn-based alloys have broad application prospects. The effect of natural aging on the properties of Zn-Li alloy and the in vitro degradation mechanism of Zn-Li alloy staple were studied. The effect of aging time on the mechanical properties and corrosion resistance of Zn-Li alloy wire were analyzed by tensile test and electrochemical test. Immersion test was used to analyze the effect of different simulation solutions on the degradation rate of Zn-Li alloy staple based on the weight change of the staple, and the degradation modes of different parts in Zn-Li alloy staple was analyzed by scanning electron microscope. The results show that the ultimate tensile strength of the wire aged for 2.0 a is 43.86 MPa lower than that of the wire aged for 1.0 a. The elongation decreases by 24.17%, the corrosion potential decreases from –1.07 V to –1.12 V, and the corrosion current density increases by 13%. The degradation rate of Zn-Li alloy staple is the highest in simulated body fluid, and the micro-galvanic corrosion of staple foot is the most serious corrosion type.
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