弱碱水和普通矿泉水对纯钛腐蚀性的研究  

Effect of Different Mineralized Water on the Crrosin Resistance of Pure Titanium

作　　者：苗一鸣[1] 李天侠[1] 任丽萍[1] 林家婷[1] 

机构地区：[1]哈尔滨医科大学口腔医院修复科,黑龙江哈尔滨150001

出　　处：《口腔医学研究》2009年第6期771-773,共3页Journal of Oral Science Research

摘　　要：目的:探讨弱碱水和普通矿泉水对纯钛腐蚀性的影响。方法:将纯钛试件浸泡在人工唾液、弱碱矿泉水中,温度室温,用Tafel曲线电化学腐蚀测量方法,测试试件的自腐蚀电位(Ecorr)、腐蚀电流密度(Icorr)、极化电阻(Rp),以人工唾液为对照组进行比较分析。应用扫描电子显微镜(SEM)观察试样腐蚀前后形貌变化。结果:纯钛在两种矿泉水中的耐腐蚀性与对照组人工唾液均有明显差异(P<0.05)。纯钛在普通矿泉水中与在弱碱水中耐腐蚀性有明显差异(P<0.05)。SEM显示纯钛表面在人工唾液中腐蚀更严重。结论:弱碱水对纯钛的腐蚀性最小。Objective： To study the effect of different mineralized water on the corrosion resistance of pure titanium. Methods： Compared with artificial saliva, electrochemical technique was used to measure the electric potential of corrosion（Ecorr） , current density of corrosion（Ieorr） and polarization resistance（Rp） of pure titanium in different mineralized water. After electrochemical analysis ,microstructural and phase diffraction was examined by SEM. Results： The corrosion resistance of pure titanium in control group was obviously different compared with ordinary mineralized water and alkalescent mineralized water（P〈0.05）. And the test also showed that there had significant difference between ordinary mineralized water and alkalescent mineralized water （P〈0.05）. Conclusion： The resuits suggest that the alkalescent mineralized water has the weakest causticity on the pure titanium.

关 键 词：纯钛 电化学腐蚀 人工唾液 弱碱水 

分 类 号：R783.1[医药卫生—口腔医学]