C-SiO2复合薄膜对口腔钴铬合金耐腐蚀性能的影响

上海口腔医学 ›› 2016, Vol. 25 ›› Issue (5): 542-547.

C-SiO₂复合薄膜对口腔钴铬合金耐腐蚀性能的影响

黄一^1*, 胡靖宇^2*, 刘玉普³, 赵东元³, 余优成¹, 毕玮¹

1.复旦大学附属中山医院口腔科, 上海 200032；
2.武警浙江总队杭州医院口腔科, 浙江杭州 310051；
3.复旦大学化学系先进材料实验室, 上海 200433

收稿日期:2015-10-23 修回日期:2016-01-31 出版日期:2016-10-25 发布日期:2016-11-10
通讯作者: 毕玮,E-mail: bixcd@sina.com
作者简介:黄一（1989-）,女,学士,住院医师,E-mail:yiwen891027@126.com;胡靖宇（1964-）,男,学士,主任医师,E-mail:1059721664@qq.com。*并列第一作者

The effect of C-SiO₂ composite films on corrosion resistance of dental Co-Cr alloy

HUANG Yi¹, HU Jing-yu², LIU Yu-pu³, ZHAO Dong-yuan³, YU You-cheng¹, BI Wei¹

1.Department of Stomatology, Zhongshan Hospital, Shanghai Fudan University. Shanghai 200032;
2.Department of Stomatology, Hangzhou Hospital of Zhejiang Provincial Corps of Chinese People's Armed Police Force. Hangzhou 310051, Zhejiang Province;
3. Laboratory of Advanced Materials, Department of Chemistry, Fudan University. Shanghai 200433, China

Received:2015-10-23 Revised:2016-01-31 Online:2016-10-25 Published:2016-11-10

摘要/Abstract

摘要： 目的在模拟口腔环境中,研究碳-二氧化硅（C-SiO₂）复合薄膜对钴铬合金耐腐蚀性能的影响,为临床应用提供依据。方法使用真空旋转涂布法在单晶硅片基底表面均匀旋涂C-SiO₂复合薄膜,用于了解C-SiO₂复合薄膜的参数。选用钴铬合金,制成20 mm × 20 mm × 0.5 mm试件,运用真空旋转涂层布法在钴铬合金表面均匀旋涂一层C-SiO₂复合薄膜。通过电感耦合等离子体发射光谱仪测量并比较涂层前、后试件浸泡液中Co、Cr、Mo 的离子浓度;采用电化学工作站进行塔菲尔极化曲线测试电化学耐腐蚀性能。采用SAS8.0软件包对数据进行统计学分析。结果电感耦合等离子体发射光谱仪测量结果显示,涂层后,试件浸泡液中Co、Cr、Mo 的离子浓度显著小于钴铬合金。塔菲尔极化曲线可见钴铬合金涂层后自腐蚀电位向正方向移动,从-0.261 V上升至-0.13 V;自腐蚀电流密度呈下降趋势,从-5.0017 μA/cm²下降至-5.3006 μA/cm²。结论C-SiO₂复合薄膜（SiO₂=61.71wt%）能显著减少金属离子的释放,有效提高钴铬合金的耐腐蚀性能,具有良好的临床应用前景。

关键词: 碳-二氧化硅复合薄膜, 钴铬合金, 极化曲线, 耐腐蚀性能

Abstract: PURPOSE: To study the effect of carbon-silica composite films on corrosion resistance of Co-Cr alloy in simulated oral environment and provide evidences for clinical application of this new material. METHODS: Co-Cr alloy specimens were cut into appropriate size of 20 mm × 20 mm × 0.5 mm. Then, the carbon-silica composite films were spin-coated onto the specimens. Subsequently, ICP-AES was used to observe the Co, Cr, Mo ion concentrations. Finally, Tafel polarization curves of the specimens were used to measure the electrochemical corrosion resistance by electrochemical workstation. SAS8.0 software package was used for statistical analysis. RESULTS: The results of ICP-AES showed that the ion concentrations of Co, Cr, Mo of specimens coated with composite films in the testing liquid were significantly smaller than that of Co-Cr alloy specimens. Tafel polarization curves showed that in the specimens coated with composite films, the corrosion potential moved in the positive direction and increased from -0.261 V to -0.13 V. At the same time, the corrosion current density decreased from -5.0017μA/cm² to -5.3006 μA/cm². CONCLUSIONS: Carbon-silica composite films (silica=61.71wt %) can reduce the release of metal ions significantly and improve the corrosion resistance of Co-Cr alloys effectively. Carbon-silica composite films may be a promising dental material.

Key words: Carbon-silicon composite, Co-Cr alloy, Polarization curves, Corrosion resistance

中图分类号:

R783.1

黄一, 胡靖宇, 刘玉普, 赵东元, 余优成, 毕玮. C-SiO₂复合薄膜对口腔钴铬合金耐腐蚀性能的影响[J]. 上海口腔医学, 2016, 25(5): 542-547.

HUANG Yi, HU Jing-yu, LIU Yu-pu, ZHAO Dong-yuan, YU You-cheng, BI Wei. The effect of C-SiO₂ composite films on corrosion resistance of dental Co-Cr alloy[J]. Shanghai Journal of Stomatology, 2016, 25(5): 542-547.

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C-SiO₂复合薄膜对口腔钴铬合金耐腐蚀性能的影响

The effect of C-SiO₂ composite films on corrosion resistance of dental Co-Cr alloy

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