引用本文:聂婷婷,李小英,田林海,董汉山.AISI 316不锈钢表面银氮复合共渗及其磨损和抗菌性能[J].中国表面工程,2017,30(4):36~44
NIE Ting-ting,LI Xiao-ying,TIAN Lin-hai,DONG Han-shan.Wear and Antibacterial Properties of Ag-N Co-alloyed AISI 316 Stainless Steel[J].China Surface Engineering,2017,30(4):36~44
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AISI 316不锈钢表面银氮复合共渗及其磨损和抗菌性能
聂婷婷1, 李小英2, 田林海1, 董汉山2
1.太原理工大学 表面工程研究所, 太原 030024;2.英国伯明翰大学 冶金与材料学院, 英国 伯明翰 B15 2TT
摘要:
为提高奥氏体不锈钢的表面硬度和耐磨性并赋予其良好的抗菌性能，应用改进的活性屏离子渗氮技术（ASPN）对AISI 316不锈钢进行了银氮（Ag-N）共渗处理。用SEM、EDS、XRD、TEM、辉光放电光谱仪（GDOES）表征复合共渗层的成分和组织结构。对不锈钢基体（SS）和复合共渗层的显微硬度、空气和腐蚀介质中的磨损性能、抗腐蚀性能以及对金黄色葡萄球菌（S.aureus）的抗菌性能进行了分析。结果表明，Ag-N复合共渗处理后形成的复合共渗层连续致密，主要由Ag掺杂S相纳米结构沉积层和S相扩散层构成。复合共渗层表面硬度较基材提高了约3~4倍，干摩擦条件下的磨损量较基体最高降低了约84.6%。复合共渗处理后试样在人工模拟体液（SBF）中的耐蚀性较基体不锈钢略有降低，比磨损率较基体降低了约35%。抗菌试验表明，复合共渗层与金黄色葡萄球菌（S.aureus）接触12 h后，达到了100%的杀菌率。
关键词:  不锈钢  活性屏离子氮化  Ag-N复合共渗  耐磨性  抗菌性
DOI：10.11933/j.issn.1007-9289.20170310001
分类号:TG174.445
基金项目:欧盟第七框架玛丽居里行动计划项目（PIIF-GA-2012-327750）；山西省回国留学人员科研资助项目（2016-025）
Wear and Antibacterial Properties of Ag-N Co-alloyed AISI 316 Stainless Steel
NIE Ting-ting1, LI Xiao-ying2, TIAN Lin-hai1, DONG Han-shan2
1.Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024;2.School of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, UK
Abstract:
In order to improve the hardness, wear resistance and antibacterial properties of AISI316 austenite stainless steel (ASS), Ag-N co-alloyed layers were prepared on AISI316 ASS by a modified active screen plasma nitriding (ASPN) technology. The composition and microstructure of the Ag-N co-alloyed layers were characterized using SEM, EDS, XRD, TEM and glow discharge optical emission spectroscope (GDOES). Microhardness, wear performance in dry air and artificial simulation of body fluids (SBF), corrosion resisitance in SBF and antibacterial efficiency to S.aureus of the untreated and Ag-N co-alloyed ASS were evaluated. Results show that a continuous and compact Ag-N co-alloyed surface case, with a nanostructure Ag doped S-phase deposition layer on an S-phase diffusion layer, is obtained on 316 ASS. Hardness of the ASS is improved by 3 to 4 times after Ag-N co-alloying treatment. Comparing with the ASS substrate, the dry wear loss of the Ag-N co-alloyed samples is reduced by about 84.6%, while the wear rate decreases by about 35% in SBF. The corrosion resistance of Ag-N co-alloyed layer is slightly lower than that of ASS in SBF. Antibacterial tests show that Ag-N co-alloyed layer presents a bactericide rate of 100% after contacting with S. aureus for 12 h.
Key words:  stainless steel  ASPN  Ag-N co-alloyed  wear resistance  antibacterial property
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