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选用银作为抗菌元素,使用双辉离子渗金属技术及活性屏氮碳共渗的复合技术,进行不锈钢表面改性,以期获得长效抗菌表面型不锈钢。文中重点研究了复合工艺中的渗银处理周期对材料组织及性能的影响。试验使用扫描电镜获得样品形貌;能谱检测元素含量;使用压痕及划痕试验定性测量膜层结合力;进行摩擦磨损试验并计算磨损率;进行腐蚀试验评价耐腐蚀性能。渗银及氮碳共渗复合处理的结果发现,一周期试样的膜层结合力优于两周期试样;两种工艺下的试样在进行划痕试验,膜层足以对抗50 N载荷,不致磨穿;一周期及两周期试样的磨损率较未处理不锈钢试样均有所降低;一周期试样的耐腐蚀性能明显优于两周期的。
Silver as an antimicrobial element, the use of double-hui ion infiltration metal technology and active screen nitrocarburizing composite technology, stainless steel surface modification, in order to obtain long-lasting antimicrobial surface stainless steel. In this paper, we mainly study the influence of silver infiltration treatment cycle on the microstructure and properties of the composites. The morphology of the sample was observed by scanning electron microscopy (SEM). The element content was measured by energy spectrum. The adhesion of the film was measured qualitatively by indentation and scratch test. The friction and wear tests were carried out to calculate the wear rate. The corrosion test was performed to evaluate the corrosion resistance. Infiltration of silver and nitrocarburizing composite treatment results showed that the film adhesion of a cycle of samples is better than the two-cycle sample; two samples of the craft in the scratch test, the film sufficient to resist the 50 N load, The wear rate of one-cycle and two-cycle samples is lower than that of the untreated stainless steel samples; the corrosion resistance of the one-cycle samples is obviously better than the two cycles.