沉积扩散法制备含银抗菌不锈钢工艺研究  

Corrosion Resistance and Microstructure of Ag-Based Antibacterial Coating on Stainless Steel Substrate Prepared by Deposition-Diffusion

作　　者：覃志伟[1] 王蕾[1] 许伯藩[1] 倪红卫[1] 熊平源[2] 

机构地区：[1]武汉科技大学材料与冶金学院 [2]武汉科技大学医学院,湖北武汉430081

出　　处：《材料保护》2006年第8期32-34,56,共4页Materials Protection

基　　金：国家自然科学基金项目(50101009);武汉市科技局资助项目

摘　　要：采用沉积扩散法制备含银抗菌不锈钢层，通过抗菌试验、盐干湿循环腐蚀试验、SEM、XPS等检测手段，研究了沉积扩散工艺制备含银抗菌不锈钢的抗菌性能、耐蚀性能及银在不锈钢基体中的分布状态和价态。结果表明，基材表面化学镀银后经离子轰击抗菌处理（工艺参数：电压1．25kV，电流3A，气流量20—60mL／min，时间4h），所得含银抗菌不锈钢的杀菌率达到99％以上，耐蚀性能没有降低，银在基体中呈弥散状态分布，其价态为零价态。Antibacterial silver-based coating was prepared on stainless steel substrate using deposition-diffusion method.Thus the stainless steel substrate was coated with electroless Ag coating and ion bombarded.The antibacterial and anticorrosion properties of the resulting Ag-based coating were investigated making use of antibacterial test and corrosion test.The microstructure and chemical state of the coating were examined by means of scanning electron microscopy and X-ray photoelectron spectroscopy.It was found that the stainless steel substrate after being coated with electroless Ag coating and succeeding ion bombardment had an antibacterial rate above 99%,while its corrosion resistance was retained after the combined surface modification.Moreover,silver had a dispersion distribution in the coating and existed as an elementary phase.

关 键 词：沉积扩散法 含银抗菌不锈钢 抗菌性 耐蚀性 

分 类 号：TQ153[化学工程—电化学工业]