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

作　　者：牛堃宁 张德闯[2] 齐福刚 林建国[2] 戴翌龙 Kun-ning NIU;De-chuang ZHANG;Fu-gang QI;Jian-guo LIN;Yi-long DAI(School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China;Key laboratory of Low Dimensional Materials and Application Technology of Ministry of Education,Xiangtan University,Xiangtan 411105,China)

机构地区：[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

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第7期2231-2244,共14页中国有色金属学报（英文版）

基　　金：supported by the Hunan Provincial Natural Science Foundation,China(No.2023JJ40626);Science and Technology Innovation Program of Hunan Province,China(No.2020RC2080);the National Natural Science Foundation of China(No.51971190)。

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10.2μm。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333.5MPa,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。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 10.2μm 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 

分 类 号：TG146.13[一般工业技术—材料科学与工程] TG156.94[金属学及工艺—金属材料]