合金元素对铝合金在泰国曼谷地区初期腐蚀行为的影响
收稿日期: 2019-07-03
修回日期: 2019-09-20
网络出版日期: 2019-10-14
基金资助
国家重点研发计划 项目(2017YFB0702300);国家自然科学基金项目(51871028);国家材料环境腐蚀平台项目(2005DKA10400)
Effect of Alloying Elements on Initial Corrosion Behavior of Aluminum Alloy in Bangkok, Thailand
Received date: 2019-07-03
Revised date: 2019-09-20
Online published: 2019-10-14
Supported by
National Key Research and Development Program of China(2017YFB0702300);National Natural Science Foundation of China(51871028);National Material Environmental Corrosion Platform Project(2005DKA10400)
在泰国曼谷地区对5083、6063和7020 3种铝合金进行为期1 a的暴晒实验，采用SEM、电化学实验、XPS和扫描Kelvin探针显微镜(SKPFM)对3种铝合金初期腐蚀形貌及腐蚀机理进行研究。结果表明：6063铝合金中Mg、Si、Fe等合金元素含量较少，腐蚀电位相对较高，约为-0.66 V (vs SCE)，腐蚀产物膜较为致密，耐蚀性较好，在泰国曼谷地区的腐蚀速率约为0.7 g/(m2·a)。7020铝合金含有较多Mg、Zn等合金元素，腐蚀电位约为-0.78 V (vs SCE)，腐蚀最为严重，腐蚀速率约为3.26 g/(m2·a)。3种铝合金均含有Mn、Si、Fe等合金元素，从而形成Fe-Si-Al或Fe-Si(Mn)-Al第二相，第二相表面电位高于基体225~280 mV，在大气环境中第二相作为阴极相，周围的基体Al优先溶解脱落，成为点蚀坑。
王力 , 董超芳 , 张达威 , 孙晓光 , Thee Chowwanonthapunya , 满成 , 肖葵 , 李晓刚 . 合金元素对铝合金在泰国曼谷地区初期腐蚀行为的影响[J]. 金属学报, 2020 , 56(1) : 119 -128 . DOI: 10.11900/0412.1961.2019.00217
With the rapid development of rail transit, high-speed trains are gradually exported to Southeast Asian countries. Aluminum alloy is widely used as a structural material such as train body and rail beam in high-speed trains, so that it is important to study the corrosion behavior of different aluminum alloy in Southeast Asia. The exposure test was conducted on 5083, 6063 and 7020 aluminum alloys in Bangkok, Thailand for 1 a. SEM, XPS, electrochemical experiment and scanning Kelvin probe force microscopy (SKPFM) were used to study the corrosion morphology and corrosion mechanism of different aluminum alloys. The results showed that the corrosion potential of 6063 aluminum alloys were relatively high, about -0.66 V (vs SCE), and the corrosion morphologies were relatively mild, which was due to less alloy elements such as Mg, Si and Fe in the 6063 aluminum alloys. The corrosion rate of 6063 aluminum alloys in Bangkok, Thailand was about 0.7 g/(m2·a). 7020 aluminum alloy contains more Zn elements, and the corrosion potential was about -0.78 V (vs SCE). The corrosion rate was the highest, about 3.26 g/(m2·a). The second phase of Fe-Si-Al or Fe-Si(Mn)-Al formed in the microstructure of the three aluminum alloys. The surface potential of the second phase was higher than that of the matrix, about 225~280 mV. In the atmospheric environment, the second phase acted as the cathode phase, and the surrounding matrix Al dissolved preferentially. The second phase fell off and formed a pit.
Key words： aluminum alloy; Bangkok Thailand; atmospheric corrosion; pitting
| [1] | Huang B Y, Li C G, Shi L K, et al. Non-Ferrous Metal Materials Manual (I) [M]. Beijing: Chemical Industry Press, 2009: 109 |
| [1] | (黄伯云, 李成功, 石开力等. 有色金属材料手册(上) [M]. 北京: 化学工业出版社, 2009: 109) |
| [2] | Yasakau K A, Zheludkevich M L, Ferreira M G S. Intermetallic Matrix Composites: Properties and Applications [M]. Sawston, Cambridge: Woodhead Publishing, 2018: 425 |
| [3] | Liu Y J, Wang Z Y, Ke W. Corrosion behavior of 2024-T3 aluminum alloy in simulated marine atmospheric environment [J]. Chin. J. Nonferrous Met., 2013, 23: 1208 |
| [3] | (刘艳洁, 王振尧, 柯 伟. 2024-T3铝合金在模拟海洋大气环境中的腐蚀行为 [J]. 中国有色金属学报, 2013, 23: 1208) |
| [4] | Xiao Y D, Wang G Y, Li X G. Corrosion behavior of atmospheric environment and corrosion feature of materials in our western area [J]. J. Chin. Soc. Corros. Prot., 2003, 23: 248 |
| [4] | (萧以德, 王光雍, 李晓刚. 我国西部地区大气环境腐蚀性及材料腐蚀特征 [J]. 中国腐蚀与防护学报, 2003, 23: 248) |
| [5] | Wang L, Guo C Y, Xiao K, et al. Corrosion behavior of carbon steels Q235 and Q450 in dry hot atmosphere at Turpan district for four years [J]. J. Chin. Soc. Corros. Prot., 2018, 38: 431 |
| [5] | (王 力, 郭春云, 肖葵等. Q235和Q450钢在吐鲁番干热大气环境中长周期暴晒时的腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2018, 38: 431) |
| [6] | Grimm M, Lohmüller A, Singer R F, et al. Influence of the microstructure on the corrosion behaviour of cast Mg-Al alloys [J]. Corros. Sci., 2019, 155: 195 |
| [7] | van Beek H J, Mittemeijer E J. Amorphous and crystalline oxides on aluminium [J]. Thin Solid Films, 1984, 122: 131 |
| [8] | Gao M, Sun Z H, Liu M, et al. Atmospheric corrosion behavior of 7B04 aluminum alloy in the presence of NaCl and SO2 [J]. Environ. Technol., 2016, 34(5): 9 |
| [8] | (高 蒙, 孙志华, 刘 明等. 7B04铝合金在NaCl沉积与SO2环境下的大气腐蚀行为 [J]. 环境技术, 2016, 34(5): 9) |
| [9] | Zhou H R, Li X G, Dong C F. Review of atmospheric corrosion behavior and mechanism of aluminum alloys and it's anodic film [J]. Equip. Environ. Eng., 2006, 3(1): 1 |
| [9] | (周和荣, 李晓刚, 董超芳. 铝合金及其氧化膜大气腐蚀行为与机理研究进展 [J]. 装备环境工程, 2006, 3(1): 1) |
| [10] | Fratila-Apachitei L E, Terryn H, Skeldon P, et al. In?uence of substrate microstructure on the growth of anodic oxide layers [J]. Electrochim. Acta, 2004, 49: 1127 |
| [11] | Wang B B, Wang Z Y, Cao G W, et al. Localized corrosion of aluminum alloy 2024 exposed to salt lake atmospheric environment in western China [J]. Acta Metall. Sin., 2014, 50: 49 |
| [11] | (王彬彬, 王振尧, 曹公望等. 2024铝合金在中国西部盐湖大气环境中的局部腐蚀行为 [J]. 金属学报, 2014, 50: 49) |
| [12] | Wei X, Dong C F, Chen Z H, et al. A DFT study of the adsorption of O2 and H2O on Al(111) surfaces [J]. RSC Adv., 2016, 6: 56303 |
| [13] | Man C, Dong C F, Xiao K, et al. The combined effect of chemical and structural factors on pitting corrosion induced by MnS-(Cr, Mn, Al)O duplex inclusions [J]. Corrosion, 2018, 74: 312 |
| [14] | Tanem B S, Svenningsen G, M?rdalen J. Relations between sample preparation and SKPFM Volta potential maps on an EN AW-6005 aluminium alloy [J]. Corros. Sci., 2005, 47: 1506 |
| [15] | Zheng C B, Li C L, Yi G, et al. Corrosion behavior of high-strength aluminum alloys 6061 and 7075 in simulated marine atmosphere [J]. Mater. Prot., 2014, 47(6): 38 |
| [15] | (郑传波, 李春岭, 益 帼等. 高强铝合金6061和7075在模拟海洋大气环境中的腐蚀行为 [J]. 材料保护, 2014, 47(6): 38) |
| [16] | Suo X N, Guo C, Kong D C, et al. Corrosion behaviour of TiN and CrN coatings produced by magnetron sputtering process on aluminium alloy [J]. Int. J. Electrochem. Sci., 2019, 14: 826 |
| [17] | Chen M A, Ou Y C, Fu Y H, et al. Effect of friction stirred Al-Fe-Si particles in 6061 aluminum alloy on structure and corrosion performance of MAO coating [J]. Surf. Coat. Technol., 2016, 304: 85 |
| [18] | Man C, Dong C F, Cui Z Y, et al. A comparative study of primary and secondary passive films formed on AM355 stainless steel in 0.1 M NaOH [J]. Appl. Surf. Sci., 2018, 427: 763 |
| [19] | Luo H, Yu Q, Dong C F, et al. Influence of the aging time on the microstructure and electrochemical behaviour of a 15-5PH ultra-high strength stainless steel [J]. Corros. Sci., 2018, 139: 185 |
| [20] | Chung I C, Chung C K, Su Y K. Effect of current density and concentration on microstructure and corrosion behavior of 6061 Al alloy in sulfuric acid [J]. Surf. Coat. Technol., 2017, 313: 299 |
| [21] | Nejadseyfi O, Shokuhfar A, Dabiri A, et al. Combining equal-channel angular pressing and heat treatment to obtain enhanced corrosion resistance in 6061 aluminum alloy [J]. J. Alloys Compd., 2015, 648: 912 |
| [22] | de Miera M S, Curioni M, Skeldon P, et al. The behaviour of second phase particles during anodizing of aluminium alloys [J]. Corros. Sci., 2010, 52: 2489 |
| [23] | Huang L P, Chen K H, Li S. Influence of grain-boundary pre-precipitation and corrosion characteristics of inter-granular phases on corrosion behaviors of an Al-Zn-Mg-Cu alloy [J]. Mater. Sci. Eng., 2012, B177: 862 |
| [24] | Esfahani Z, Rahimi E, Sarvghad M, et al. Correlation between the histogram and power spectral density analysis of AFM and SKPFM images in an AA7023/AA5083 FSW joint [J]. J. Alloys Compd., 2018, 744: 174 |
| [25] | Ornek C, Engelberg D L. SKPFM measured Volta potential correlated with strain localisation in microstructure to understand corrosion susceptibility of cold-rolled grade 2205 duplex stainless steel [J]. Corros. Sci., 2015, 99: 164 |
/
| 〈 |
|
〉 |
