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利用MEVVA源强流离子注入机将银离子注入到马氏体不锈钢表面,注入能量和注入剂量分别为100keV和(0.1~8)×1017ions/cm2。选用革兰氏阳性金黄色葡萄球菌和革兰氏阴性大肠杆菌研究了银离子注入不锈钢的抗菌性能,电化学法测定了其耐蚀性能,AES分析了不锈钢注入层中主要元素的浓度分布,讨论了注入剂量与不锈钢抗菌性能及耐蚀性能的关系。研究表明:随银离子注入剂量的增加,银在注入层中的峰值浓度变化不大,但分布深度增加,马氏体不锈钢抗菌性能显著提高。在100keV注入能量、8×1017ions/cm2注入剂量条件下,银离子注入马氏体不锈钢后可以使其具有最佳的抗菌性能,但耐蚀性能略有下降。
The MEVVA source strong ion implanter was used to implant silver ions onto the surface of martensitic stainless steel. The energy and implantation dose were 100keV and (0.1 ~ 8) × 1017ions / cm2, respectively. Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli were used to study the antibacterial properties of silver ion implanted stainless steel. The corrosion resistance was measured by electrochemical method. The concentration distribution of main elements in stainless steel injection layer was analyzed. The injection dose and stainless steel antibacterial properties and corrosion resistance relationship. The results show that with the increase of silver ion implantation dose, the peak concentration of silver in the implanted layer does not change much, but the distribution depth increases, the antibacterial property of martensitic stainless steel increases significantly. At 100 keV implantation energy and 8 × 10 17 ions / cm 2 implantation dose, silver ions can be injected into martensitic stainless steel to provide the best antibacterial property, but the corrosion resistance decreases slightly.