采用高压固溶制备具有均匀腐蚀行为的高强度抗菌Zn-4Ag-Mn合金
Achieving high strength and antibacterial Zn-4Ag-Mn alloy with homogenous corrosion behavior via high-pressure solid solution
牛堃宁 1张德闯 2齐福刚 1林建国 2戴翌龙1
作者信息
- 1. 湘潭大学材料科学与工程学院,湘潭 411105
- 2. 湘潭大学低维材料及应用技术教育部重点实验室,湘潭 411105
- 折叠
摘要
采用高压固溶(HPS)法制备Zn-4Ag-Mn合金,获得高强度、可均匀降解、抗菌的植入材料.显微组织表征表明,HPS处理使Zn-4Ag-Mn合金晶粒比铸态(AC)合金的细化57.9％,其第二相平均尺寸减小到10.2 μm.压缩、维氏硬度和磨损摩擦试验表明,HPS合金具有较高的力学性能,抗压屈服强度为333.5 MPa,维氏硬度为Hv 89.5.电化学腐蚀和浸泡腐蚀试验表明,HPS处理优化合金的耐蚀性,使其腐蚀均匀.此外.经抗菌实验测试,HPS处理的Zn-4Ag-Mn合金具有优异的抗菌性能,抗菌率为71.6％.这些结果表明,HPS处理的Zn-4Ag-Mn是一种很有前途的生物可降解植入材料.
Abstract
Zn-4Ag-Mn alloy was successfully prepared by high-pressure solid solution(HPS)method to achieve high strength and antibacterial implant materials which can degrade uniformly.Microstructural characterization showed that HPS treatment on Zn-4Ag-Mn alloy resulted in 57.9％grain refinement,and the average size of the second phases was reduced to 10.2 μm compared with as-cast(AC)alloy.The compression,Vickers hardness and wear and friction tests showed particularly high mechanical properties of HPS alloys,including a compressive yield strength of 333.5 MPa and a Vickers hardness of Hv 89.5.Electrochemical corrosion,and immersion corrosion tests showed that HPS treatment optimized the corrosion resistance of the alloy with homogenous corrosion.Furthermore.The HPS-treated Zn-4Ag-Mn alloy exhibited excellent antibacterial properties through antibacterial testing,with an antibacterial rate of 71.6％.These results suggest that the HPS-treated Zn-4Ag-Mn alloy can be considered as a promising biodegradable implant material.
关键词
Zn-Ag-Mn合金/高压固溶/高强度/均匀腐蚀/抗菌性能Key words
Zn-Ag-Mn alloy/high-pressure solid solution/high strength/homogenous corrosion/antibacterial property引用本文复制引用
基金项目
Hunan Provincial Natural Science Foundation,China(2023JJ40626)
Science and Technology Innovation Program of Hunan Province,China(2020RC2080)
National Natural Science Foundation of China(51971190)
出版年
2024
NETL
NSTL
万方数据