2198铝合金硫酸-己二酸阳极氧化膜耐蚀性

王雪飞; 李松梅; 刘建华; 于美; 李英东

doi:10.13700/j.bh.1001-5965.2015.0342

2198铝合金硫酸-己二酸阳极氧化膜耐蚀性

doi: 10.13700/j.bh.1001-5965.2015.0342

北京航空航天大学材料科学与工程学院, 北京 100083

基金项目: 国家自然科学基金(51271012)

详细信息

作者简介:
王雪飞女,硕士研究生。主要研究方向:材料电化学以及材料表面处理。Tel.:15063839910 E-mail:wangxuefei89@126.com;李松梅女,博士,教授,博士生导师。主要研究方向:材料电化学、电化学测量技术、微生物腐蚀、材料表面电化学改性等。Tel.:13901162076 E-mail:songmei_li@buaa.edu.cn

通讯作者:
李松梅,Tel.:13901162076 E-mail:songmei_li@buaa.edu.cn

中图分类号: V252
计量
- 文章访问数: 966
- HTML全文浏览量: 82
- PDF下载量: 557
- 被引次数: 0
出版历程
- 收稿日期: 2015-05-26
- 网络出版日期: 2016-05-20

Corrosion resistance of sulfuric-adipic acidic film for 2198 aluminum alloy

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 以2198铝-锂合金为研究对象,在硫酸-己二酸电解质溶液中进行阳极氧化,并对氧化后的试样进行沸水封闭处理。采用场发射扫描电子显微镜(FE-SEM)和原子力显微镜(AFM)对氧化膜的表面和截面的形貌进行观察。通过电化学阻抗谱(EIS)、塔菲尔(Tafel)曲线和浸泡实验来分析阳极氧化膜的耐蚀性能。结果表明铝-锂合金在阳极氧化过程中由于含铜合金相的影响,形成的氧化膜孔洞不完整出现连通现象;电化学测试结果表明封闭之后的氧化膜的耐蚀性明显提高,并且随着浸泡时间的延长拟合等效电路发生改变,同时多孔层和阻挡层的阻抗值在降低,说明在浸泡的过程中氧化膜的结构发生改变,耐蚀性降低。
- 阳极氧化 /
- 2198铝-锂合金 /
- 硫酸-己二酸 /
- 氧化膜 /
- 耐蚀性
Abstract: 2198 Al-Li alloys were anodized in sulfuric-adipic acid bath, and then protected by boiling water sealing treatment. The surface morphology and cross-sectional morphology of the anodic film were evaluated by field emission scanning electron microscopy (FE-SEM) and atomic force microscopy (AFM).The corrosion properties of the anodic film were analyzed by electrochemical impedance spectroscopy (EIS), Tafel curve and immersion test. The anodic samples were respectively immersed in sodium chloride solution for different time, then EIS was used to analyze the corrosion behavior. The results show that some holes of the anodic film are connected because of the copper alloy phases. The result of EIS shows that the corrosion resistance of the anodic film after sealing treatment increases obviously, equivalent circuit changes with extension of immersion time, and the impedance of the porous and barrier layers decreases, so immersion process could change the structure of the anodic film and decrease the corrosion resistance.
- anodizing /
- 2198 Al-Li alloy /
- sulfuric-adipic acid /
- anodic film /
- corrosion resistance

HTML全文

参考文献(19)

[1]	GARCIA-HERAS M,JIMENEZ-MORALES A,CASAL B,et al.Preparation and electrochemical study of cerium-silica sol-gel thin films[J].Journal of Alloys and Compounds,2004,380(1-2):219-224.
[2]	CAPELOSSI V R,POELMAN M,RECLOUX I,et al.Corrosion protection of clad 2024 aluminum alloys anodized in tartaric-sulfuric acid bath and protected with hybrid sol-gel coating[J].Elctrochimica Acta,2014,124:69-79
[3]	MOUTARLIER V,GIGANDER M P,PAGETTI J,et al.An electrochemical approach to the anodic oxidation of Al 2024 alloy in sulfuric acid containing inhibitors[J].Surface and Coatings Technology,2002,161(2-3):267-274.
[4]	ZUO Y,ZHAO P H,ZHAO J M.The influences of sealing methods on corrosion behavior of anodized aluminum alloys in NaCl solutions[J].Surface and Coatings Technology,2003,166(2-3):237-242.
[5]	HUANG Y L,HONG S,HUANG H H,et al.Evaluation of the corrosion resistance of anodized aluminum 6061 using electrochemical impedance spectroscopy(EIS)[J].Corrosion Science,2008,50(12):3569-3575.
[6]	SAEEDIKHANI M,JAVIDI M,YAZDANI A.Anodizing of 2024-T3 aluminum alloy in sulfuric-boric-phosphoric acids and its corrosion behavior[J].Transactions of Nonferrous Metals Society of China,2013,23:2551-2559.
[7]	MA Y,ZHOU X,THOMPSON G E,et al.Anodic film growth on Al-Li-Cu alloy AA2099-T8[J].Electrochimica Acta,2012,80:148-159.
[8]	于美,陈高红,刘建华,等.LY12CZ铝合金的己二酸硫酸阳极氧化[J].北京航空航天大学学报,2012,38(3):363-367. YU M,CHEN G H,LIU J H,et al.Adipic-sulfuric acid anodizing for LY12CZ aluminum alloy[J].Journal of Beijing University of Aeronautics and Astronautics,2012,38(3):363-367(in Chinese).
[9]	李英东.铝合金阳极氧化成膜控制机理及后处理工艺研究[D].北京:北京航空航天大学,2015:49-65. LI Y D.Study of the mechanism of anodizing process of aluminum alloy and post-treatment procedure[D].Beijng:Beihang University,2015:49-65(in Chinese).
[10]	LI S M,LI Y D,ZHANG Y,et al.Effect of intermetallic phases on the anodic oxidation and corrosion of 5A06 aluminum alloy[J].International Journal of Minerals,Metallurgy and Materials,2015(22):167-174.
[11]	刘建华,高庆娜,李英东,等.5A05和2A12铝合金在硫酸-己二酸中阳极氧化行为及膜层电化学性能研究[J].北京航空航天大学学报,2015,41(5):757-763. LIU J H,GAO Q N,LI Y D, et al.Oxidation behavior of aluminum alloy 5A06 and 2A12 in sulfuric-adipic acid and eletrocheical property of anodic oxide[J].Journal of Beijing University of Aeronautics and Astronautics,2015,41(5):757-763(in Chinese).
[12]	MA Y,ZHOU X,THOMPSON G E,et al.Anodic film formation on AA 2099-T8 aluminum alloy in tartaric-sulfuric acid[J].Journal of the Electrochemical Society,2011,158(2):C17-C22.
[13]	马宗耀,谢发勤.铝-锂合金阳极氧化及膜层性能的研究[J].电镀与环保,2008,26(6):31-34. MA Z Y,XIE F Q.Study of anodizing Al-Li alloy and properties of anodization film[J].Electrolating & Pollution Control,2008,26(6):31-34(in Chinese).
[14]	OCÓN P,CURIONI M,THOMPSON G E,et al.Degradation of the corrosion resistance of anodic oxide films through immersion in the anodising electrolyte[J].Corrosion Science,2010,52(7):2219-2227.
[15]	BENFEDDA B,HAMADOU L,BENBRAHIM N,et al.Electrochemical impedance investigation of anodic alumina barrier layer[J].Journal of the Electrochemical Society,2012,159(8):C372-C381.
[16]	GONZALEZ J A,LOPEZ V,OTERO E,et al.Postsealing changes in porous aluminum oxide films obtained in sulfuric acid solutions[J].Journal of Electrochemical Society,2000,147(3):984-990.
[17]	CHEN J,SONG Y W,SHAND Y,et al.Study of the corrosion mechanism of the in situ grown Mg-Al-CO^2-₃ hydrotalcite film on AZ31 alloy[J].Corrosion Science,2012,65:268-277.
[18]	BOISIER G,LAMURE A,PÉBÈRE N,et al.Corrosion protection of AA2024 sealed anodic layers using the hydrophobic properties of carboxylic acids[J].Surface & Coatings Technology,2009,203(22):3420-3426.
[19]	LI S M,LI Y D,ZHANG Y,et al.Effect of intermetallic phases on the anodic oxidation and corrosion of 5A06 aluminum alloy[J].International Journal of Minerals,Metallurgy and Materials,2015,22(2):167.