| 引用本文: | 易笃钢,沈理达,朱军,田宗军,刘志东.脉冲摩擦喷射电沉积纳米晶镍的电化学腐蚀行为[J].材料科学与工艺,2015,23(3):96-101.DOI:10.11951/j.issn.1005-0299.20150319. |
| YI Dugang,SHEN Lida,ZHU jun,TIAN Zongjun,LIU Zhidong.Electrochemical corrosion behavior of nanocrystalline nickel prepared by pulsed friction aided jet electrodeposition[J].Materials Science and Technology,2015,23(3):96-101.DOI:10.11951/j.issn.1005-0299.20150319. |
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| 摘要: |
| 为进一步研究脉冲电源对脉冲摩擦喷射电沉积的影响,本文分别采用脉冲摩擦喷射电沉积工艺和传统喷射电沉积工艺制备镍沉积层,利用TEM和XRD对比分析了占空比和频率对纳米晶镍微观组织结构的影响,采用电化学极化法研究了各沉积层在3.5 % 氯化钠溶液中的耐腐蚀性能,以期为拓展纳米晶材料的应用提供理论依据.研究表明:脉冲摩擦电沉积的应用,使电沉积结晶过程更加均匀,晶粒得到极大细化,最小平均晶粒尺寸可达9.12 nm；在氯化钠溶液中,脉冲摩擦喷射电沉积具有更小的腐蚀电流密度和更宽的钝化区,制备的镍沉积层电化学腐蚀性能均优于传统喷射电沉积；占空比和频率对沉积层腐蚀性能的影响与其各自对晶粒大小的影响基本吻合,过小或过大的占空比及频率均会导致耐腐蚀性能的降低. |
| 关键词: 脉冲 摩擦 喷射电沉积 纳米镍 腐蚀 |
| DOI：10.11951/j.issn.1005-0299.20150319 |
| 分类号:TG662; TQ153 |
| 基金项目: |
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| Electrochemical corrosion behavior of nanocrystalline nickel prepared by pulsed friction aided jet electrodeposition |
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YI Dugang,SHEN Lida,ZHU jun,TIAN Zongjun,LIU Zhidong
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(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
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| Abstract: |
| In order to further research the influence of pulse power on the pulse friction aided jet electrodeposition, nickel deposition layer was prepared by pulsed friction aided jet electrodeposition and traditional jet electrodeposition. The effects of the pulse duty ratio and frequency on microstructure of the two nickel deposition layer and the corrosion behavior in 3.5%NaCl solution were comparatively studied by TEM, XRD and electrochemical polarization method, which may provide theory basis for extending the application of nanocrystalline materials. The results show that, the application of pulsed friction aided jet electrodeposition can make the crystallization process more uniform and the grains greatly refined. The minimum average grain size can be down to 9.12 nm. In the NaCl solution, pulsed friction aided jet electrodeposition has smaller corrosion current density and wider passivation zone. The prepared nickel deposition layers are all better than that prepared by traditional jet electrodeposition. The effect on the corrosion performance of depositions by duty ratio and frequency is basically in conformity with their impact on grain size, too small or too large duty ratio and frequency will lead to the reduction of corrosion resistance. |
| Key words: pulse friction jet electrodeposition nanocrystalline nickel corrosion |
