摘要
目的研究纯钛铸件表面镀制氮化钛薄膜后在氟环境中的耐腐蚀性。方法使用电感耦合等离子体发射光谱仪测量纯钛铸件和氮化钛镀膜后纯钛铸件在氟质量浓度为0、1000、1500 mg/L的人工唾液中短期浸泡及长期浸泡后钛离子的析出量,扫描电镜观察浸泡后试件表面形貌,计算腐蚀面积。结果对照组纯钛铸件在三种氟浓度人工唾液中短期浸泡后钛离子的析出量分别为0、(3.35±0.16)、(4.70±0.25)μg/cm^2,长期浸泡后钛离子的析出量分别为(3.30±0.23)、(15.12±1.35)、(20.07±3.21)μg/cm^2。镀膜组纯钛铸件在三种氟浓度人工唾液中短期浸泡后钛离子的析出量分别为0、(0.51±0.06)、(0.86±0.11)μg/cm^2,长期浸泡后钛离子的析出量分别为(1.92±0.13)、(3.16±0.25)、(4.56±0.23)μg/cm^2。统计分析显示钛铸件浸泡后钛离子的析出量随时间的延长、氟浓度的增加而增加(P <0.05),而镀膜后钛铸件的钛离子析出量明显降低(P <0.05)。扫描电镜显示:实验组较对照组的表面侵蚀明显减轻,腐蚀面积明显减少(P <0.05)。结论氮化钛镀膜后纯钛铸件的耐腐蚀性明显提高。
Objective To investigate the effect of TiN coating on the corrosion resistance of casted titanium.Methods Inductively coupled plasma optical emission spectroscopy was used to measure the concentrations of titanium ions after immersion in fluoridated or non-fluoridated artificial saliva.After long term immersion,the microstructure was observed by scanning electron microscope(SEM).Results The concentrations of titanium ions released from untreated specimens after short term immersion in non-fluoridated or fluoridated saliva were 0 and(4.70±0.25)μg/cm2,respectively.The concentrations of titanium ions released from untreated specimens after 456 h long-term immersion in the two kinds of saliva solution were(3.30±0.23)and(20.07±3.21)μg/cm2,respectively.The concentrations of titanium ions released from treated specimens after short term immersion in two kinds of saliva solution were 0 and(0.86±0.11)μg/cm2,respectively.The concentrations of titanium ions released from treated specimens after 456 h immersion in two kinds of saliva solution were(1.92±0.13)and(4.56±0.23)μg/cm2 respectively.The concentrations of titanium ions released from specimens significantly increased with the increase of fluoride concentrations and immersion time(P<0.05),but the titanium ions concentration of TiN coated group was significantly lower than that of the control group(P<0.05).The surface of untreated titanium was corroded more significantly than TiN-coated titanium.Conclusion The corrosion resistance of titanium was increased significantly after TiN coating.
作者
王献利
刘玉学
刘会娟
冯艳川
李芳
WANG Xian-li;LIU Yu-xue;LIU Hui-juan;FENG Yan-chuan;LI Fang(Department of Prosthodontics,Anyang Sixth People's Hospital,Anyang 455000,China)
出处
《北京口腔医学》
CAS
2020年第4期194-197,共4页
Beijing Journal of Stomatology
基金
国家自然科学基金(81571019)。
关键词
钛
氟
腐蚀
脉冲电弧离子镀
Titanium
Fluorine
Corrosion
Pulsed bias arc ion plating
