辉光等离子渗氮对纯钛腐蚀性能的影响  

Glow discharge plasma nitriding on the corrosion resistance of pure titanium effect

作　　者：徐文秀[1] 牛秀艳[1] 王得利[2] 栗巧玲[1] 

机构地区：[1]牡丹江医学院附属红旗医院 [2]牡丹江医学院,黑龙江牡丹江157000

出　　处：《微量元素与健康研究》2012年第2期7-9,共3页Studies of Trace Elements and Health

摘　　要：目的:模拟口腔环境,研究辉光等离子渗氮纯钛试样在含氟人工唾液中的腐蚀情况。方法:采用塔菲尔(tafel)曲线测试,测定辉光等离子渗氮纯钛试样及自然氧化纯钛试样在氟离子(F-)浓度为500×10-6人工唾液中的自腐蚀电流密度(Icorr)、极化电阻(Rp),并以人工唾液为对照组进行比较分析。结果:辉光等离子渗氮和F-对纯钛腐蚀性的影响均有显著性,P<0.01。对纯钛试样进行辉光等离子渗氮后,在两种腐蚀介质中Icorr均明显减小,Rp明显增大,腐蚀速度减慢;纯钛试样在含氟人工唾液中Icorr明显增大,Rp明显减小,腐蚀速度加快。结论:对纯钛试样进行辉光等离子渗氮后,在两种腐蚀介质中纯钛试样的耐腐蚀性显著提高;在人工唾液中加入F-后,纯钛试样的腐蚀加重。Objective： A simulated oral environment,study of glow discharge plasma nitriding of pure titanium specimen in fluorine containing artificial saliva in corrosion.Methods： Using Tafel curves to test,determination of glow plasma nitriding of pure titanium and the natural oxidation of pure titanium in fluorine ion concentration for 500×10-6 of artificial saliva on the corrosion current density（Icorr）,polarization resistance（Rp）,and in artificial saliva as the control group for comparison analysis.Results： Glow discharge plasma nitriding and F-on pure titanium corrosive impact was significant（P0.01）.Of pure titanium by glow discharge plasma nitriding,in two kinds of corrosion medium Icorr were significantly decreased,Rp obviously increased,corrosion rate slows down;in artificial saliva with fluoride ion,pure titanium specimen Icorr obviously increased,Rp was decreased,the corrosion speed.Conclusion： On pure titanium specimen glow plasma nitriding,in two kinds of corrosive medium,corrosion resistance of pure titanium specimen increased significantly;in artificial saliva after joining F-,pure titanium corrosion exacerbation.

关 键 词：纯钛 人工唾液 等离子渗氮 腐蚀 塔菲尔曲线 

分 类 号：O614.411[理学—无机化学]