LLY12铝合金在模拟酸雨溶液中的阻抗谱研究

中国腐蚀与防护学报

2003, Vol. 23

Issue (3): 167-170

研究报告

本期目录 | 过刊浏览

LLY12铝合金在模拟酸雨溶液中的阻抗谱研究

安百刚;张学元;宋诗哲

天津大学

A STUDY OF ELECTROCHEMICAL IMPEDANCE SPECTRUMFOR CORROSION BEHAVIOR OF LY12 ALUMINUM ALLOY IN SIMULATED ACID RAIN

Baigang An;Xueyuan Zhang;Shzhe Song

天津大学

全文: PDF(145 KB)

摘要: 利用电化学阻抗谱和极化曲线方法，研究了模拟酸雨溶液pH 值对LY12铝合金腐蚀行为的影响.结果表明，当模拟酸雨溶液pH小于31时，LY12铝合金的腐蚀电位随pH值的升高而变负；当溶液pH大于34时，LY12铝合金的腐蚀电位随pH值升高而变正.在pH小于34的模拟酸雨溶液中，LY12铝合金的表面膜发生溶解，随着浸泡时间延长，膜厚度降低，膜阻抗降低，LY12铝合金的腐蚀速率升高.而在pH大于38溶液中，LY12铝合金的表面膜厚度基本不随浸泡时间发生明显变化，随浸泡时间增加，膜阻抗增大，LY12铝合金的腐蚀速率降低.从铝合金表面膜特性和离子吸附及腐蚀产物等方面，对实验结果进行了讨论.

关键词 ：模拟酸雨, LY12铝合金, 阻抗

Abstract：The effects that pH of simulated acid rain on corro sion behavior of LY12 aluminum alloy was investigated by electrochemical impedan ce spectrum and polarization curves.It was found that corrosion potential shifts to less noble value with increasing pH at the lower 3.1 and shifts to more nobl e value at the higher 3.4.In the solutions with pH≤3.4,the surface film of LY12 aluminum alloy was dissolved and the thickness of surface film and film resista nce decreased with immersion time,thus corrosion rate of LY12 aluminum alloy inc reased.In the solutions with pH≥3.8,the film thickness of LY12 aluminum alloy h ad no apparent change with immersion time,the film resistance increased with imm ersion time,and thus corrosion rate decreased.The results was discussed from sur face film of LY12 aluminum alloy,adsorption of anions and corrosion products.

Key words： acid rain LY12 aluminum alloy impedance

收稿日期: 2001-11-20

ZTFLH:

TG174.2

通讯作者: 安百刚

Corresponding author: Baigang An

	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
	安百刚
	张学元
	宋诗哲
44.8K

引用本文:

安百刚; 张学元; 宋诗哲 . LLY12铝合金在模拟酸雨溶液中的阻抗谱研究[J]. 中国腐蚀与防护学报, 2003, 23(3): 167-170 .
Baigang An, Xueyuan Zhang, Shzhe Song. A STUDY OF ELECTROCHEMICAL IMPEDANCE SPECTRUMFOR CORROSION BEHAVIOR OF LY12 ALUMINUM ALLOY IN SIMULATED ACID RAIN. J Chin Soc Corr Pro, 2003, 23(3): 167-170 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2003/V23/I3/167

[1]　GraedelTE .Corrosionmechanismforaluminumexposedtotheatmosphere[J].J .Electrochem.Soc.,1989,136(4):204c-212c
[2]　BadawyWA ,Al-KharafiFM ,EI -AzabAS .ElectrochemicalbehaviourandcorrosioninhibitionofAl,Al-6061andAl-Cuinnaturalaqueoussolution[J].Corros.Sci.,1999,41:709-727
[3]　LenderinkHJW ,LindenMVD ,WitJHW .Corrosionofalu minuminacidicandnaturalsolutions[J].Electrochim.Acta,1993,38(14):1989-1992
[4]　PyunSI,MoonSM ,AhnSH ,KimSS .Effectsofionsonanod icdissolutionofpurealuminuminalkalinesolution[J].Corros.Sci.,1999,41:653-667
[5]　BessoneJB ,MayerCE ,EberM ,LorenzWJ .AnEISstudyofaluminumbarrier-typeoxidefilmsformedindifferentmedia[J].Electrochim.Acta,1992,37(12):2283
[6]　SongShizhe.StudyMethodofCorrosionElectrochemistry[M ].Beijing:ChemicalIndustryPress,1988:164-165(宋诗哲编著.腐蚀电化学研究方法[M].北京:化学工业出版社,1988:164-165)
[7]　EpelboinI,KeddamM .Faradicimpedance:diffusionimpedanceandreactionimpedance[J].J .Electrochem.Soc.,1970,117:1052.
[8]　KeddamM ,MattosOR ,TakenoutiH .Reactionmodelforirondiffusionstudiedbyelectrodeimpedance[J].J .Electrochem.Soc.,1959,55:1586.
[9]　FoleyRT .Localizedcorrosionofaluminumalloys-Areview[J].Corrosion,1986,42(5):277-288
[10]　BrettCMA .Theapplicationofelectrochemicalimpedancetech niquestoaluminumcorrosioninacidicchloridesolution[J].J .Appl.Electrochem.,1990,20:1000-1003
[11]　BurleighTD ,SmithAT .Asimpleimpedancespectramethodtomeasurethethicknessofnonporousanodicoxidesonaluminum[J].J .Electrochem.Soc.,1991,138:L34-L35
[12]　AnBG ,ZhangXY ,HanEH .TheeffectofsaltspeciesduringtheprecipitationintheatmosphereonthecorrosionofLY12CZalloy[A].15 thInternationalCorrosionCongress[C].Granda,Spain,2002,5

[1]	王帅星, 杜楠, 刘道新, 肖金华, 邓丹萍. 模拟酸雨作用下红壤含水量对X80钢腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2018, 38(2): 147-157.
[2]	刘雨薇, 王振尧, 王军, 胡波涛. 输电塔杆用热浸镀锌钢在模拟酸雨大气环境中的腐蚀行为[J]. 中国腐蚀与防护学报, 2014, 34(5): 426-432.
[3]	元辛, 岳珠峰, 温世峰, 李磊. 铝合金表面有机硅环氧涂层的腐蚀电化学行为[J]. 中国腐蚀与防护学报, 2014, 34(4): 375-381.
[4]	王彬彬, 王振尧, 曹公望, 钟西舟, 柯伟. 受力的LY12和LC4铝合金在中国西部盐湖大气环境中的腐蚀行为[J]. 中国腐蚀与防护学报, 2014, 34(3): 287-293.
[5]	杨丽景，张阳明，宋振纶. 铝含量对超塑性锌铝合金腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2012, 32(6): 491-495.
[6]	范林蔡健平张琦. LY12铝合金在周浸试验中的腐蚀行为[J]. 中国腐蚀与防护学报, 2009, 29(3): 215-219.
[7]	韩德盛; 李荻 . 海洋大气湿度对LY12初期腐蚀的影响[J]. 中国腐蚀与防护学报, 2007, 27(3): 134-136 .
[8]	胡吉明; 张鉴清; 谢德明 . 水在有机涂层中的传输ⅠFick扩散过程[J]. 中国腐蚀与防护学报, 2002, 22(5): 311-315 .
[9]	刘靖; 许立铭; 郑家shen . 硫酸盐还原菌生物膜下Cu-Zn合金的腐蚀研究[J]. 中国腐蚀与防护学报, 2001, 21(6): 345-351 .

Viewed

Full text

Abstract

Cited

Shared

Discussed