304不锈钢双辉渗铜铈渗层结构分析及其抗菌性能

Microstructure and Antibacterial Property of 304 Stainless Steel after Infiltration of Cerium and Copper by the Double Glow Technique

摘要:

用双辉等离子技术结合空心阴极效应将铜铈元素渗入304不锈钢。用金相显微镜、扫描电镜、能谱分析仪、X射线衍射仪等方法研究了被渗试样的组织结构，解释了渗层分为白亮层和渗层暗带以及碳元素和铬元素向渗层表层偏聚以及其他元素分布发生变化的原因。对渗后试样进行抗菌实验。结果表明，渗后不锈钢对大肠杆菌和金黄色葡萄球菌具有良好的抗菌性能。

Abstract:

Copper and cerium were metallized into 304 stainless steel by the double glow plasma technique combined with the copper hollow cathode effect. Microstructure of the samples was investigated by metallographic microscope, scanning electron microscopy, energy spectrum analyzer and X-ray diffraction. The reasons why diffusion layers are divided into white layer and dark layer, of the segregation of carbon and chromium to the surface layer and the distribution variation of other elements were explained. Antibacterial experiments show that 304 stainless steel after infiltration has good antibacterial property to E. coli and S. aureus.