Effect of phytic acid on the microstructure and corrosion resistance of Ni coating

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	Effect of phytic acid on the microstructure and corrosion resistance of Ni coating
	G. Z. Meng; F. L. Sun; Y. W. Shaoa; T. Zhang; F. H. Wang; C. F. Dong; X. G. Li
	2010
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	55 期号:20 页码:5990-5995
摘要	In this work, the pure Ni coatings were synthesized on Q235 steel by using reverse pulsed electrode-position technique in sulphate-based baths with 0, 0.1, 0.2 and 0.3 g/L phytic acid additive. The effect of phytic acid on the microstructure and micro-morphology of the sample was observed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM), respectively. And the effect of phytic acid on the corrosion resistance of the sample was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The results demonstrated that the addition of phytic acid was in favor of the growth of nano-scale twins (NT) in the interior of grains, which was due to the lowered stacking fault energies of Ni during the electrodeposition, and the typical morphology of pyramidal islands on the surface. The results also demonstrated that the effect of phytic acid was not monotonous with increasing concentration: the passive current density i(p) was minimum and the charge transfer resistance R(t) was maximum for the sample obtained from the bath with 0.2 g/L phytic acid, indicating that the sample obtained from the bath with 0.2 g/L phytic acid showed the best corrosion resistance. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[meng, guozhe] harbin engn univ, corros & protect lab, key lab superlight mat & surface technol, coll mat sci & chem engn,minist educ, harbin 150001, heilongjiang, peoples r china. [meng, guozhe; shaoa, yawei; zhang, tao; wang, fuhui; li, xiaogang] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. [dong, chaofang; li, xiaogang] univ sci & technol beijing, ctr corros & protect, beijing 100083, peoples r china.;meng, gz (reprint author), harbin engn univ, corros & protect lab, key lab superlight mat & surface technol, coll mat sci & chem engn,minist educ, nantong st 145, harbin 150001, heilongjiang, peoples r china;mengguozhe@hrbeu.edu.cn
关键词	Nano-scale Twins Phytic Acid Reverse Pulsed Electrodeposition Tem Corrosion Electrochemical-impedance Spectroscopy Boundary-character-distribution Nickel Electrodeposition Intergranular Corrosion High-density Oxide-films Grain-size Nanoscale Behavior Phytate
URL	查看原文
WOS记录号	WOS:000280422800067
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31379
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Z. Meng,F. L. Sun,Y. W. Shaoa,et al. Effect of phytic acid on the microstructure and corrosion resistance of Ni coating[J]. Electrochimica Acta,2010,55(20):5990-5995.
APA	G. Z. Meng.,F. L. Sun.,Y. W. Shaoa.,T. Zhang.,F. H. Wang.,...&X. G. Li.(2010).Effect of phytic acid on the microstructure and corrosion resistance of Ni coating.Electrochimica Acta,55(20),5990-5995.
MLA	G. Z. Meng,et al."Effect of phytic acid on the microstructure and corrosion resistance of Ni coating".Electrochimica Acta 55.20(2010):5990-5995.