铸造技术2023，Vol.44Issue(12)：1116-1123,8.DOI:10.16410/j.issn1000-8365.2023.3276
超声时间对生物医用可降解Zn-0.5Sr合金微观组织和性能影响
Study of the Properties and Microstructures of Biodegradable Zn-0.5Sr Alloy for Biomedical Use by Different Ultrasonic Time Treatments
摘要
Abstract
To enhance the mechanical properties of biodegradable Zn alloys used in biological medical applications and simultaneously ensure that the corrosion rate meets the requirements for implantation in the human body,the impact of varying ultrasonic treatment time(0,2,5 and 8 min)on the microstructure and properties of Zn-0.5Sr alloys was investigated at a constant ultrasonic power of 600 W.The results reveal that reducing the ultrasonic time to 5 min results in a decrease in the size of the primary α-Zn and SrZn13 second phase to 87.24 and 35.01 μm,respectively.Additionally,the tensile strength of the alloy increases to 118.93 MPa,and the elongation increases to 1.32％.The results of 15-day immersion corrosion experiments show that the corrosion rate of the alloy without ultrasonic treatment has the lowest value of 0.046 mm/a,and when the ultrasonic time reaches 5 min,the corrosion rate of the alloy increases to(0.085±0.003 1)mm/a.The electrochemical experimental results show that the corrosion rate of the Zn-0.5Sr alloy after an ultrasonic treatment time of 5 min increases from(2.340±0.159)mm/a to(5.207±0.354)mm/a.关键词
Zn-0.5Sr合金/超声处理/微观组织/降解速率Key words
Zn-0.5Sr alloy/ultrasonic treatment/microstructure/degradation rate分类
矿业与冶金引用本文复制引用
张蛟,乔红凯,赵志鑫,朱培艺,李庆林..超声时间对生物医用可降解Zn-0.5Sr合金微观组织和性能影响[J].铸造技术,2023,44(12):1116-1123,8.基金项目
甘肃省自然科学基金重点项目(23JRRA752) （23JRRA752）
甘肃省研究生"创新之星"项目(2023CXZX-403) （2023CXZX-403）
