Effect of fluoride on the corrosion behavior of nanostructured Ti-24Nb-4Zr-8Sn alloy in acidulated artificial saliva
文献类型：期刊论文
| 作者 | Li, J1; Bai, Y1; Fan, ZD; Li, SJ; Hao, YL; Yang, R1; Gao, YB |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 34期号:9页码:1660-1670 |
| 关键词 | Titanium Fluoride Corrosion Nanostructuring Ti2448 |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2018.01.008 |
| 英文摘要 | The surface of titanium dental implants is highly susceptible to aggressive fluoride ions in the oral environment. Nanotechnology has proven an effective approach to improve the stability and corrosion resistance of titanium by applying a passive film. In this study, we investigated the effects of fluoride on the corrosion behavior of nanostructured (NS) Ti-24Nb-4Zr-8Sn (Ti2448) alloy in acidulated artificial saliva (AAS) at 37 degrees C, and then conducted comparisons with its coarse grained (CG) counterpart. Electrochemical techniques, such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), as well as surface analysis including X-ray photoelectron spectroscopy (XPS) with argon ion sputtering, and scanning electronic microscopy (SEM) were employed to evaluate the effects of fluoride on sensitivity to pitting and the tolerance of Ti2448 to fluoride in AAS solution. The results demonstrate that corrosion current density increased with F- concentration. In all respects, the NS Ti2448 alloy presented corrosion resistance superior to that of its coarse grained (CG) counterpart at low F- concentrations (<0.1%). Furthermore, a high content of F- (1%) was shown to promote the active dissolution of both alloys by increasing the rate of corrosion. Following immersion in the fluoridated AAS solution for 60 days, a tissue-friendly compound, Ca-3(PO4)(2), was detected on the surface of the NS when F- = 0.01% and Na2TiF6 was identified as the main component in the corrosion products of the CG as well as NS Ti2448 alloys when F- = 1%. High concentrations of F- produced pitting corrosion on the CG alloy, whereas NS Ti2448 alloy presented general corrosion in the form of lamellar separation under the same conditions. These findings demonstrate the superior corrosion resistance of the NS Ti2448 alloy as well as lower pitting sensitivity and higher tolerance to fluoride due mainly to grain refinement. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000438129900025 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79998]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Xian Thermal Power Res Inst Co Ltd, Xian 710032, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 3.Longgang Dist Cent Hosp, Zunyi Med Coll, Dept Stomatol, Shenzhen 518116, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, J,Bai, Y,Fan, ZD,et al. Effect of fluoride on the corrosion behavior of nanostructured Ti-24Nb-4Zr-8Sn alloy in acidulated artificial saliva[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(9):1660-1670. |
| APA | Li, J.,Bai, Y.,Fan, ZD.,Li, SJ.,Hao, YL.,...&Gao, YB.(2018).Effect of fluoride on the corrosion behavior of nanostructured Ti-24Nb-4Zr-8Sn alloy in acidulated artificial saliva.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(9),1660-1670. |
| MLA | Li, J,et al."Effect of fluoride on the corrosion behavior of nanostructured Ti-24Nb-4Zr-8Sn alloy in acidulated artificial saliva".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.9(2018):1660-1670. |
入库方式： OAI收割
来源：金属研究所
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