材料研究学报  2012, Vol. 26 Issue (4): 377-382

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用直流和脉冲电沉积制备Ni--Cr纳米复合镀层

张艳1, 田苗苗1, 刘蕾1, 彭晓2

1.沈阳工业大学理学院 沈阳 110023 2.中国科学院金属研究所 沈阳 110016

Preparation of Ni–Cr Nanocomposite Coatings by D. C. and Pulsed D.C. Electroplating Technique

ZHANG Yan1, TIAN Miaomiao1, LIU Lei1, PENG Xiao2

1.School of Science, Shenyang University of Technology, shenyang 110023 2.Insititute of Metal Research, Chinese Academy of Science, shenyang 110016

张艳 田苗苗 刘蕾 彭晓. 用直流和脉冲电沉积制备Ni--Cr纳米复合镀层[J]. 材料研究学报, 2012, 26(4): 377-382.
. Preparation of Ni–Cr Nanocomposite Coatings by D. C. and Pulsed D.C. Electroplating Technique[J]. Chin J Mater Res, 2012, 26(4): 377-382.

摘要 参考文献 相关文章 Metrics 全文: PDF(1035 KB)   摘要: 应用直流、脉冲电沉积技术分别制备Ni--Cr纳米复合镀层, 研究了电沉积方式对其性能的影响。结果表明：随着镀液中Cr浓度的增大, 用两种电沉积方式制备的镀层中Cr含量均随着镀液浓度的增加而增加, 但是在镀液中Cr浓度相同的条件下脉冲纳米复合镀层的Cr含量比直流纳米复合镀层的高。在900℃氧化24 h后, 脉冲纳米镀层的抛物线速度常数低于直流镀层的2.85倍, 在含Cl离子和酸性水溶液中其耐蚀性能均优于直流方式制备的纳米复合镀层。脉冲镀层的显微硬度比直流镀层的高2倍。脉冲电沉积能降低镀层表面的浓差极化, 控制关断时间, 使晶核的形成几率增大, 晶核数量增多, 从而制备出平整、致密、细化的复合镀层。 关键词 ： 复合材料,  脉冲纳米复合镀层,  组织,  性能,  Cr含量     Abstract：Ni–Cr nanocomposite coatings were prepared by D. C. and pulsed D.C. electroplating technique, respectively, and the contents of Cr in the nanocomposite film was investigated. The results show that the codeposition of Cr nanoparticles in the nanocomposite coating by D.C. electroplating firstly increased with the Cr concentration in electrolyte bath, but the contents of Cr in the film prepared by pulsed D.C. electroplating are higher than those of the D.C. electroplating for the same concentration Cr in the electrolyte bath. The parabolic rate constant for the pulse nanocomposite coating is 2.85 times that of D.C. electroplating films after oxidation at 900   for 24 h, and the corrosion resistance of the pulse nanocomposite coatings is better than that of the D.C. electrodeposited films in Cl ion solution and acid solution. Meanwhile, the microhardness of the pulse nanomcoposite coatings is 2 times that of the D.C. electroplated films. The pulse electrodeposition can reduce the concentration distinction polarization on the surface of the pulse nanocomposite coatings, controll the shut off time, and increase the possibility of nuclei formation, so the amounts of grain nuclei increase and the perfect nanocomposite coatings with finer grains and more compact structure can be obtained. Key words： composite material    pulsed nanocomposite coating    microstructure    property    Cr content 收稿日期: 2012-02-11      ZTFLH:  TG1331   基金资助: 国家自然科学基金资助项目50571108和51171199资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张艳 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2012/V26/I4/377 1 S.Ranjan, D.Siddhartha, D.Karabi, Effect of stirring rate on the microstructure and microhardness of Ni–CeO2 nanocomposite coating and investigation of the corrosion property, Surface and Coatings Technology, 205, 3847(2011) 2 Y.B.Zhou, G.G.Zhao, H.J.Zhang, Fabrication and wear properties of co–deposited Ni–Cr nanocomposite coatings, Trans. Nonferrous Mct. Soc. 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