| 纳米Al_2O_3颗粒对镍电结晶过程的影响 |
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| 引用本文： | 谭澄宇,胡炜,崔航,刘宇.纳米Al_2O_3颗粒对镍电结晶过程的影响[J].电化学,2009,15(2):228. |
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| 作者姓名： | 谭澄宇 胡炜 崔航 刘宇 |
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| 作者单位： | 中南大学材料科学与工程教育部重点实验室; |
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| 基金项目： | 国防科工委民口配套项目 |
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| 摘 要： | 借助循环伏安(CV)和计时安培(CA)研究了在不同电位下,纳米Al2O3微粒对镍由硫酸盐混合溶液在铜基底上电结晶沉积的影响.结果表明,Ni-Al2O3镀液体系电沉积的起始电位约为-740 mV.随着阶跃电位负移,Ni-Al2O3镀液体系电沉积成核时间tm逐渐缩短.与纯Ni镀液体系电沉积的tm相比,在-740~-830mV较低阶跃电位下,Ni-Al2O3镀液体系电沉积的成核时间tm明显缩短,表明Al2O3微粒有助于镍的电结晶成核.在-890 mV阶跃电位下,Ni-Al2O3镀液体系电沉积初始阶段的成核过程满足Scharifker-Hills三维瞬时成核模型.
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| 关 键 词： | Ni-Al2O3膜 电结晶形核 I~t曲线 |
| 收稿时间： | 2009-05-28 |
Influence of Nano-Al_2O_3 Particles in Nickel Electro-crystallization Process |
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| TAN Cheng-yu,HU Wei,CUI Hang,LIU Yu.Influence of Nano-Al_2O_3 Particles in Nickel Electro-crystallization Process[J].Electrochemistry,2009,15(2):228. |
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| Authors: | TAN Cheng-yu HU Wei CUI Hang LIU Yu |
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| Institution: | Key Laboratory of Ministry of Education for Material Science and Engineering;Central-South University;Changsha 410083;China |
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| Abstract: | The influence of nano-Al2O3 particles in nickel electro-deposition on copper matrix from acid sulphate solution was studied under various potentials by using cyclic voltammetry(CV) and chronoamperometry(CA).The results show that the beginning potential of electro-deposition was about-740 mV(vs.SCE) for Ni-Al2O3 solution system.With the step-potential moving to the negative direction,the nucleation time of electro-deposition for Ni-Al2O3 solution system was shortened gradually.Compared with that of pure Ni d... |
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| Keywords: | Ni-nanoAl2O3 coating electro-crystallization nucleation I～t curve |
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