Fe2+ 质量浓度对纳米晶Ni-Fe合金电沉积层耐蚀性的影响

doi:10.3696/j.issn.1006-396X.2011.04.014

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (4): 51-54.DOI: 10.3696/j.issn.1006-396X.2011.04.014

Fe²⁺ 质量浓度对纳米晶Ni-Fe合金电沉积层耐蚀性的影响

于洋¹,陈吉^1* ,储刚²,史艳华¹

1.辽宁石油化工大学机械工程学院,石油化工过程腐蚀与防护技术中心,辽宁抚顺113001;
2.辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

收稿日期:2011-06-19 修回日期:2011-07-15 出版日期:2011-08-25 发布日期:2011-08-25
作者简介:于洋(1983 -), 女, 辽宁铁岭市, 在读硕士
基金资助:
国家自然科学基金委员会青年科学基金项目(50801036);教育部留学回国人员科研启动基金项目资助。

Effect of Fe²⁺ Concentration on Corrosion Resistance#br# of Electroplated Nanocrystalline Ni-Fe Coating

1.Center for Corrosion and Protection Technology in Petro-Chemical Industry (CCPT) School of Mechanical Engineering, Liaoning Shihua University, Fushun Liaoning 113001, P. R. China;  2. School of Chemical and Material Science, Liaoning Shihua University, Fushun Liaoning 113001, P. R.China

Received:2011-06-19 Revised:2011-07-15 Published:2011-08-25 Online:2011-08-25

摘要/Abstract

摘要： 采用直流电沉积技术在黄铜基体上制备出低Fe高Ni的纳米晶Ni-Fe合金镀层。研究不同Fe²⁺ 质量浓度(2~12g/L)对合金镀层的表面形貌、镀层成分、相结构、镀层显微硬度和耐蚀性的影响规律。实验结果表明,电镀Ni-Fe合金可获得纳米晶结构,当Fe²⁺质量浓度为4g/L时,硬度较高,为658HV。在质量分数为3.5%的NaCl溶液中,Fe²⁺质量浓度为4g/L时,合金镀层的耐蚀性最好,自腐蚀电流密度较小,约为0.430µA/cm²,涂层电阻较大,约为143400Ω,比基体黄铜提高约40倍。

关键词: 镍铁合金 , 纳米晶 , 电沉积 , 耐蚀性

Abstract: Nanocrystalline Ni-Fe alloy coatings with a higher chemical in Ni and lower in Fe on brass were prepared by DC electrodeposition technology.The effects of different Fe²⁺ concentration (ranging from 2 g/L to 12 g/L)on surface morphology,chemical composition,phase structure,micro-hardness and corrosion resistance of the coating were studied.Experimental results show that the Ni-Fe alloy coating is nano-crystalling,and the Fe²⁺ concentration of about 4g/L has the highest hardness of about 658 HV.For the Fe²⁺concentration of about 12g/L,the coating exhibits the best corrosion resistance in 3.5% NaCl solution,with the corrosion current density of about 0.430 µA/cm2 and the coating resistance of about 143400Ω,respectively,which is about 40 times less than that of brass substrate.

Key words: Nickel-iron alloy , Nanocrystalline , Electroplating , Corrosion resistance

于洋,陈吉,储刚,史艳华. Fe²⁺ 质量浓度对纳米晶Ni-Fe合金电沉积层耐蚀性的影响[J]. 石油化工高等学校学报, 2011, 24(4): 51-54.

YU Yang,CHEN Ji,CHU Gang,SHI Yan-hua. Effect of Fe²⁺ Concentration on Corrosion Resistance#br# of Electroplated Nanocrystalline Ni-Fe Coating[J]. Journal of Petrochemical Universities, 2011, 24(4): 51-54.

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Fe²⁺ 质量浓度对纳米晶Ni-Fe合金电沉积层耐蚀性的影响

Effect of Fe²⁺ Concentration on Corrosion Resistance#br# of Electroplated Nanocrystalline Ni-Fe Coating

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