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阴极沉积羟基磷灰石的成核机理

Nucleation Mechanism of HAP by Cathode Electrodeposition

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【Author】 CHEN Ai-liang~(1),ZHAO Zhong-wei ~(1),CHEN Xing-yu~(1),JIA Xi-jun~(2),CHEN Jin~(1)(1.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China;2.School of Management and Engineering,China University of Mining andTechnology,Beijing 100083,China)

【机构】中南大学冶金科学与工程学院；中国矿业大学；中南大学冶金科学与工程学院湖南长沙410083；湖南长沙410083；北京100083；

【摘要】通过恒电位沉积羟基磷灰石研究了其成核动力学,不同电位下的暂态i-t曲线不同,但是发现在不同的电位下,其i-t1/2曲线都呈直线关系,呈三维瞬时成核。晶体的生长速率随着外加电位的负移而增大,可见外加电位对晶体的生长具有显著的作用。更多还原

【Abstract】 The nucleation mechanism and kinetics of HAP by electrodeposition was studied through constant-potential experiments.The results showed that there were differenti-t transient curves at different potential.However,it was found that linear relationship existed between i-t^1/2 at different potential with three-dimensional instantaneous nucleation.Crystal is grown faster with the negative shift of the additional potential,indicating that additional potential plays a remarkable role in the crystal growth.更多还原

【关键词】羟基磷灰石；电沉积；瞬时成核；连续成核；
【Key words】 hydroxyapatite； electrodeposition； instantaneous nucleation； continuous nucleation；

【基金】国家自然科学基金资助项目(50104012)

【文献出处】稀有金属与硬质合金 ,Rare Metals and Cemented Carbides , 编辑部邮箱 ,2005年04期

【分类号】TB39
【被引频次】4
【下载频次】191

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