摘要
目的观察纯钛在含蛋白人工唾液中腐蚀性能的变化。方法制备纯钛试样,分别以Fusayama人工唾液(对照组,n=3)和加入0.01%、0.05%牛血清蛋白的Fusayama人工唾液(实验组1和实验组2,n=3)处理纯钛试样。采用电化学方法进行Tafel曲线测试,分析在含蛋白人工唾液中纯钛试样腐蚀性能的变化。结果 Tafel曲线测试结果显示:对照组、实验1组和实验2组纯钛试样的自腐蚀电位分别为(-349.1±19.6)、(-325.2±18.8)、(-218.2±12.5)mV,自腐蚀电流密度分别为(3.57±0.52)、(3.52±0.29)、(3.64±0.70)×10-2A/cm2。统计学分析结果显示:三组间自腐蚀电流密度比较差异无统计学意义(P>0.05);实验2组纯钛试样的自腐蚀电位显著高于对照组,差异有统计学意义(P<0.05)。结论含牛血清蛋白人工唾液影响纯钛金属材料的腐蚀性能,可能与其自腐蚀电位的改变有关。
Objective To investigate the corrosion behavior of titanium in artificial saliva with albumen.MethodsSamples of titanium were prepared,and were treated with Fusayama artificial saliva（control group,n=3）,Fusayama artificial saliva added with 0.01% bovine serum albumin（experiment group 1,n=3） and Fusayama artificial saliva added with 0.05% bovine serum albumin（experiment group 2,n=3） respectively.Tafel curve tests were performed with electrochemical methods,and the change of corrosion behavior of titanium in artificial saliva with albumen was analysed.Results Tafel curve tests indicated that the values of self-corrosion potential of titanium samples were（-349.1±19.6）mV,（-325.2±18.8） mV and（-218.2±12.5） mV respectively,and the values of self-corrosion current density of titanium samples were（3.57±0.52）×10-2 A/cm2,（3.52±0.29） ×10-2 A/cm2 and（3.64±0.70）×10-2 A/cm2 respectively in control group,experiment group 1 and experiment group 2.Statistical analysis revealed that there was no significant difference in the values of self-corrosion current density among three groups（P0.05）,and the value of self-corrosion potential in experiment group 2 was significantly higher than that in control group（P0.05）.ConclusionArtificial saliva with albumen may influence the corrosion behavior of titanium,which may be related to the change of self-corrosion potential of titanium.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2012年第3期293-295,共3页
Journal of Shanghai Jiao tong University:Medical Science
基金
上海市科委基金(08DZ2271100)
上海市重点学科建设项目(S30206)~~
关键词
纯钛
腐蚀性能
蛋白
人工唾液
titanium
corrosion
albumen
artificial saliva
