金属离子型抗菌不锈钢组织及其抗菌性能的研究  

Study of Microstructure and Antibacterial Properties in Ionic Antibacterial Stainless Steel

作　　者：王志广[1] 张伟[1] 李宁[1] 文玉华[1] 王均[1] 曾蔚[2] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]四川大学基础医学与法医学院,四川成都610065

出　　处：《铸造技术》2006年第5期499-502,共4页Foundry Technology

基　　金：四川省学术技术带头人培养基金(03GG029-053)

摘　　要：分析了高铜马氏体不锈钢和加银奥氏体不锈钢的组织及抗菌性能。通过HREM分析显示,高铜马氏体不锈钢经抗菌热处理后(600℃时效0.5 h),基体弥散分布着大量小于40 nm的球状-εCu相,与基体存在共格关系。随时效时间增长,-εCu相逐渐脱溶成为独立的富铜相。SEM分析显示加Ag奥氏体不锈钢固溶后富Ag质点分布在晶界。等离子质谱法显示表面涂覆液膜24 h后Cu2+、Ag+抗菌离子析出浓度分别达到75×10-4%和0.15×10-4%,这是高铜和加银不锈钢具有100%抗菌率的原因。The Microstructure and antibacterial properties in martensite stainless steel with high copper content and austenite stainless steel with Ag content are investigated. The HREM shows that lots of spherical E-Ou phases below 40 nm precipitated in the martensite stainless steel with high copper content after antibacterial heat-treatment （aging at 600 13 for 0. 5 h）, which keep the coherent relationship with matrix. With the increasing aging time at 600 13, XRD shows that E-Ou grows and loses the coherent relationship with matrix. SEM shows that in austenite stainless steel with Ag content, second phase with high Ag is preferentially precipitated in grain boundary, lOP shows that Cu^2＋ ,Ag^＋ concentration in fluid film coated on the surface of the steel reach 75 ×10^-4 % and 0.15 × 10^-4 %, respectively, which is the main reason that stainless steel with high copper content and stainless steel with 0. 27% Ag content with have 100% antibacterial capacity, respectively.

关 键 词：抗菌不锈钢 时效 CU^2+ AG^+ 

分 类 号：TG113[金属学及工艺—物理冶金]