Fe30Mn5Al合金氧化改性层的电化学腐蚀性能

doi:10.11868/j.issn.1001-4381.2015.001006

摘要
参考文献
相关文章
Metrics

全文: PDF(2918 KB) HTML()
输出: BibTeX | EndNote (RIS)

摘要将Fe30Mn5Al合金在800℃空气中循环氧化160h，在氧化层与基体之间获得厚度约为15μm的贫Mn，富Fe铁素体层，研究氧化改性贫Mn层对Fe30Mn5Al合金电化学腐蚀性能的影响。结果表明：在1mol·L^-1 Na₂SO₄溶液中，与原始合金相比，贫Mn层的阳极极化曲线呈自钝化，自腐蚀电位E_{vs SCE}从-750mV提高至-130mV，钝化电流密度i_p从310μA/cm²下降至29μA/cm²；电化学交流阻抗谱（EIS）的容抗弧直径及|Z|值增加，相位角平台变宽，利用等效电路R_s-（R_t//CPE）拟合的极化电阻R_t由2.7kΩ·cm²增至9.9kΩ·cm²；贫Mn层比合金基体具有更好的抗蚀性能。

	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
	朱雪梅
	张振卫
	王新建
	张彦生

关键词 ： Fe30Mn5Al合金, 氧化改性层, 阳极极化, 电化学交流阻抗

Abstract：The Fe30Mn5Al alloy was oxidized at 800℃ in air for 160h, the oxidation-induced layer about 15μm thick near the scale-metal interface was induced to transform to ferrite and become enriched in Fe and depletion in Mn. The effect of the oxidation-induced Mn depletion layer on the electrochemical corrosion behavior of Fe30Mn5Al alloy was evaluated. The results show that in 1mol·L^-1 Na₂SO₄ solution, the anodic polarization curve of the Mn depletion layer exhibits self-passivation, compared with Fe30Mn5Al austenitic alloy, and the corrosion potential E_{vs SCE} is increased to -130mV from -750mV and the passive current density i_p is decreased to 29μA/cm² from 310μA/cm². The electrochemical impedance spectroscopy(EIS) of the Mn depletion layer has the larger diameter of capacitive arc, the higher impedance modulus|Z|, and the wider phase degree range, and the fitted polarization resistant R_t is increased to 9.9kΩ·cm² from 2.7kΩ·cm² by using an equivalent electric circuit of R_s-(R_t//CPE). The high insulation of the Mn depletion layer leads to an improved corrosion resistance of Fe30Mn5Al austenitic alloy.

Key words： Fe30Mn5Al alloy oxidation layer anodic polarization electrochemical impedance spectroscopy

收稿日期: 2015-08-12 出版日期: 2017-08-10

中图分类号:

TG174.422

通讯作者: 朱雪梅(1964-),女,教授,硕士,主要从事金属材料腐蚀与防护,联系地址:大连交通大学材料科学与工程学院(116028),E-mail:xmzhu@djtu.edu.cn E-mail: xmzhu@djtu.edu.cn

引用本文:

朱雪梅, 张振卫, 王新建, 张彦生. Fe30Mn5Al合金氧化改性层的电化学腐蚀性能[J]. 材料工程, 2017, 45(8): 83-87.
ZHU Xue-mei, ZHANG Zhen-wei, WANG Xin-jian, ZHANG Yan-sheng. Electrochemical Corrosion Behavior of Oxidation Layer on Fe30Mn5Al Alloy. Journal of Materials Engineering, 2017, 45(8): 83-87.

链接本文:

http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.001006 或 http://jme.biam.ac.cn/CN/Y2017/V45/I8/83

[1] GEBHARDT T, MUSIC D, KOSSMANN D, et al. Elastic properties of fcc Fe-Mn-X (X=Al, Si) alloys studied by theory and experiment[J]. Acta Mater, 2011, 59(8):3145-3155.
[2] LEE S, LEE C Y, LEE Y K. Schaeffler diagram for high Mn steels[J]. Journal of Alloys and Compounds, 2015, 628(1):46-49.
[3] WU Z Q, DING H, AN X H, et al. Influence of Al content on the strain-hardening behavior of aged low density Fe-Mn-Al-C steels with high Al content[J]. Materials Science and Engineering:A, 2015, 639(5):187-191.
[4] TUAN Y H, WANG C S, TSAI C Y. Corrosion behaviors of austenitic Fe-30Mn-7Al-xCr-1C alloys in 3.5% NaCl solution[J].Materials Chemistry and Physics, 2009, 114(2-3):595-598.
[5] ZHU X M, ZHANG Y S. Investigation of the electrochemical corrosion behaviour and passive film for Fe-Mn, Fe-Mn-Al, and Fe-Mn-Al-Cr alloys in aqueous solutions[J]. Corrosion, 1998, 54(1):3-12.
[6] LEE J W, DUH J G, WANG J H. Mechanical property evaluation of cathodic arc plasma-deposited CrN thin films on Fe-Mn-Al-C alloys[J]. Surf Coat Technol, 2003, 168(2-3):223-230.
[7] JAW J H, CHENG W C, WANG C J. The formation of AlN crystals in an Fe-Mn-Al-C alloy during the nitriding process[J]. Metall Mater Trans A, 2005, 36A(9):2289-2296.
[8] SU C W, LEE J W, WANG C S, et al. The effect of hot-dipped aluminum coatings on Fe-8Al-30Mn-0.8C alloy[J]. Surf Coat Technol, 2008, 202(9):1847-1852.
[9] WANG C H, LUO C W, HUANG C F, et al. Biocompatibility of metal carbides on Fe-Al-Mn-based alloys[J]. J Alloy Comp, 2011, 509(3):691-696.
[10] ZHU X M, LIU M, ZHANG Y S. Electrochemistry and surface investigations of anodically passivated layer formed on Fe-Mn-Al-Cr alloy in Na₂SO₄ solution[J].Corro Eng Sci Technol, 2007, 42(1):22-28.
[11] OH J M, MCNALLAN M J. Microstructural development in the surface region during oxidation of iron-manganese-nickel-silicon alloys[J]. J Electrochem Soc, 1986,133(5):1042-1048.
[12] PARK S H, CHUNG I S, KIM T W. Characterization of the high -temperature oxidation behavior in Fe-25Mn-1.5Al-0.5C alloy[J].Oxid Met, 1998, 49(3-4):349-371.
[13] PEREZ P, PEREZ F J, GOMEZ C, et al. Oxidation behaviour of an austenitic Fe-30Mn-5Al-015C alloy[J].Corro Sci, 2002, 44(1):113-127.
[14] PEREZ P, GARCES G, PEREZ F J, et al. Influence of chromium additions on the oxidation resistance of an austenitic Fe-30Mn-5Al alloy[J]. Oxid Met, 2002,57(3-4):339-361.
[15] OH J M, MCNALLAN M J. The effect of oxidation-induced surface transformations on the anodic polarization characteristics of FeMnSi alloys[J]. Corrosion, 1987, 43(9):561-566.
[16] COCCIA L G, LENARDI C, SABATINI A. The effect of Mn-depleted surface layer on the corrosion resistance of shape memory Fe-Mn-Si-Cr alloys[J]. Metall Mater Trans A, 1997, 28A(5):1219-1222.
[17] 张林伟,王鲁,王全胜,等. 冷喷涂CoNiCrAlY涂层在Na₂SO₄熔盐中的热腐蚀行为[J]. 材料工程, 2016, 44(11):45-50. ZHANG L W, WANG L, WANG Q S, et al. Hot corrosion behavior of cold-sprayed CoNiCrAlY coating in Na₂SO₄ salt[J]. Journal of Materials Engineering, 2016, 44(11):45-50.
[18] 戴建伟, 易军, 王占考, 等. 单晶高温合金铂改性铝化物涂层的高温氧化行为[J]. 航空材料学报, 2015, 35(5):32-38. DAI J W, YI J, WANG Z K, et al. High temperature oxidation behavior of Pt modified aluminide coating on single crystal superalloy[J]. Journal of Aeronautical Materials, 2015, 35(5):32-38.

[1]	李建平, 姜洪锋, 毛大恒, 曾立帮. 轧制变形量对铸轧铅合金板带性能的影响[J]. 材料工程, 2012, 0(4): 17-21.
[2]	成艳, 蔡伟, 赵连城. Cl^-浓度和pH值对TiNi合金腐蚀行为和Ni离子析出的影响[J]. 材料工程, 2003, 0(9): 37-40.

Viewed

Full text

Abstract

Cited

Shared

Discussed