| 引用本文: | 曹岩,高洁,郑可,张孟,于盛旺,吴玉程,贺志勇.316L不锈钢表面Ta涂层的制备及性能[J].中国表面工程,2019,32(6):29~36 |
| CAO Yan,GAO Jie,ZHENG Ke,ZHANG Meng,YU Shengwang,WU Yucheng,HE Zhiyong.Fabrication and Properties of Ta Coating on 316L Stainless Steel[J].China Surface Engineering,2019,32(6):29~36 |
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| 摘要: |
| 为改善316L不锈钢在体液中的生物相容性，采用双辉等离子体表面合金化技术在其表面制备了Ta涂层，并使用扫描电子显微镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对Ta涂层的形貌、成分分布和物相结构进行分析，借助划痕仪、往复摩擦磨损试验机和电化学工作站对涂层的结合强度、磷酸盐缓冲溶液(PBS)中的耐磨性及耐蚀性进行研究。结果表明：所制备的Ta涂层由厚度均为2 μm左右的沉积层和扩散层组成，主要物相为α-Ta，涂层与基体的结合强度良好，发生破裂的临界载荷达到111 N。Ta涂层的比磨损率仅为基体的12.5%，自腐蚀电位比基体提高234 mV，腐蚀电流密度则降低2个数量级，磨损前后涂层样品的腐蚀速率分别为基体的1.9%和3.6%。表明Ta涂层能显著提升316L不锈钢在PBS溶液中的耐磨性和耐蚀性。 |
| 关键词: 316L不锈钢 Ta涂层 双辉等离子 表面合金化 生物相容性 耐磨性 耐蚀性 |
| DOI：10.11933/j.issn.1007-9289.20190729001 |
| 分类号:TG174.445 |
| 基金项目:国家自然科学基金（51601124，51901154）；山西省自然科学基金（201901D211092）；山西省科技重大专项（20181102013） |
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| Fabrication and Properties of Ta Coating on 316L Stainless Steel |
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CAO Yan, GAO Jie, ZHENG Ke, ZHANG Meng, YU Shengwang, WU Yucheng, HE Zhiyong
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Institute of New Carbon Materials, Taiyuan University of Technology, Jinzhong 030600, China
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| Abstract: |
| Ta coatings were prepared on the surface of the 316L stainless steel via double glow plasma surface alloying technique to improve the poor biocompatibility property of 316L stainless steel. The microstructure, composition distribution and phase structure of the Ta coating were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). The adhesion strength, tribological property and anticorrosion property of the Ta coating in PBS solution were show by scratch tester, reciprocating friction and wear tester and electrochemical workstation, respectively. The results show that the Ta coating consists of a deposition layer and a diffusion layer, with the thicknesses of about 2 μm, respectively. The main phase of the coating is α-Ta. The interfacial bond strength between the coating and the substrate is excellent, and the critical load for the coating delamination is 111 N. The specific wear rate of the Ta coating is only 12.5% of the untreated substrate. The corrosion potential of the Ta coating is 234 mV higher than that of the substrate, while the corrosion current density is 2 orders of magnitude lower. The corrosion rate of the Ta coating before and after sliding tests are 1.9% and 3.6% of that of the substrate, respectively. It is concluded that the Ta coating can effectively improve the wear resistance and anticorrosion properties of 316L stainless steel in PBS solution. |
| Key words: 316L stainless steel Ta coating double glow plasma surface alloying technique biocompatibility property wear resistance anticorrosion property |
