|
|
|
| CORROSION BEHAVIOR OF MILD STEEL IN ATMOSPHERE CONTAINING SO2 |
| LIU Yue'e; LIN Cui; ZHAO Qing |
| School of Materials Science and Technology; Nanchang Hangkong University; Nanchang 330063 |
|
|
|
|
Abstract Corrosion behavior of mild steel was studied in atmosphere containing 0.4×10-6 and 1×10-6 volume fraction of SO2 with indoor simulated test. Corrosion morphologies were investigated by means of optical microscope (OM) and scanning electron microscopy (SEM), meanwhile corrosion products were analyzed by X-ray diffraction (XRD). The results showed that the corrosion rate of mild steel increased with increasing SO2 concentration. The atmospheric corrosion process of mild steel was divided into two stages in atmosphere containing 0.4×10-6 volume fraction of SO2 which both agreed with exponential growth law, while in atmosphere containing 1×10-6 volume fraction of SO2, it was divided into three stages which respectively followed exponential growth, linear growth and exponential decay law. It can be indicated from the observation of macroscopic surface that the growth rate of corrosion products was relatively quicker and the rust layer was thin in the condition of 0.4×10-6 volume fraction SO2, while in atmosphere containing 1×10-6 volume fraction of SO2, the rust layer grew outward slowly and the layer was thick. Atmospheric corrosion of mild steel had filiform corrosion characteristics in atmosphere containing SO2, filiform corrosion products which initiated from grain boundaries and surface active area spread along the grain boundaries and ferrite. At the same time, cellular products grew on the filiform corrosion products. Sulfur mainly concentrated in the cellular products. Cellular products grew faster with the increasing content of SO2.
|
|
Received: 28 July 2008
|
|
|
|
Corresponding Authors:
LIN Cui
E-mail: lincwi@sohu.com
|
| [1] Christofer L, Thomas G, Translated by Han E H.Atmospheric Corrosion [M]. Beijing: Chemical Industry Press, 2005
(C. 莱格拉夫，T. 格雷德尔著，韩恩厚译. 大气腐蚀 [M]. 北京：化学工业出版社，2005)
[2] Wei B M, Nanjing Chemical Engineering Institute. Metal Corrosion Theory and Application [M]. Beijing: Chemical Industry Press, 1984
(魏宝明，南京化工学院等合编. 金属腐蚀理论及应用 [M]. 北京：化学工业出版社，1984)
[3] Lin C, Li X G, Wang G Y. Research progress on initial stage of atmospheric corrosion behavior of metals in pollutant atmospheres [J]. Corros. Sci. Prot. Technol., 2004, 16(2): 89-95
(林翠，李晓刚，王光雍. 金属材料在污染大气环境中初期腐蚀行为和机理研究进展 [J]. 腐蚀科学与防护技术，2004，16(2)：89-95)
[4] Cao C N. Natural Environment Corrosion of Material in China [M]. Beijing: Chemical Industry Press, 2005
(曹楚南主编. 中国材料的自然环境腐蚀 [M]. 北京：化学工业出版社，2005)
[5] Lin C, Wang F P, Li X G. The progress of research methods on atmospheric corrosion [J]. J. Chin. Soc. Corros. Prot.,2004，24(4)：249-256
(林翠，王凤平，李晓刚. 大气腐蚀研究方法 [J]. 中国腐蚀与防护学报，2004，24(4)：249-256)
[6] Chen H H. Corrosion Science of Metal [M]. Beijing: Beijing Institute of Technology Press, 1996
(陈鸿海. 金属腐蚀学 [M]. 北京：北京理工大学出版社，1996)
[7] Wang Z Y, Chen H C, Yu G C. An investigation on atmospheric corrosiveness in Hainan province [J]. J. Chin. Soc. Corros. Prot.,1996, 16(3): 225-229
(王振尧，陈鸿川，于国才. 海南省大气腐蚀性调查 [J]. 中国腐蚀与防护学报，1996，16(3)：225-229)
[8] Ye K M. Generality of Metal Corrosion and Protection [M]. Beijing:People Education Press, 1980
(叶康明. 金属腐蚀与防护概论 [M]. 北京：人民教育出版社，1980)
[9] An B G. Study on Corrosion Behavior of the Typical Metals in Rain/Acid Rain [D]. Tianjin: Tianjing University, 2003
(安百刚. 酸雨/雨水环境中典型金属材料的腐蚀行为研究 [D]. 天津：天津大学，2003)
[10] Allam I M , Arlow J S , Saricimen H. Initial stages of atmospheric corrosion of steel in the Arabian Gulf [J]. Corros. Sci.,1991, 32(4): 417-432
[11] Yamashita M, Miyuki H, Matsuda Y, et al.The long term growth of the protective rust layer formed on weathering steel by atmospheric corrosion during a quarter of a century [J]. Corros. Sci., 1994, 36(2): 283-299
[12] Liang C F, Hou W T. Sixteen-year atmospheric corrosion exposure study of steels [J]. J. Chin. Soc. Corros. Prot., 2005，25(1)：1-6
(梁彩凤，候文泰. 碳钢、低合金钢16年大气暴露腐蚀研究 [J]. 中国腐蚀与防护学报，2005，25(1)：1-6)
[13] Chen H L, Wei Y. Machanism of industrial atmospheric corrosion for carbon steel [J]. Corros. Prot., 2006, 27(6): 284-286
(陈惠玲，魏雨. 碳钢在含SO2环境大气中腐蚀机理的研究 [J]. 腐蚀与防护，2006，27(6)：284-286)
[14] Han W, Jia W, Wang J, et al. Effect of SO2 on corrosion mechanism of A3 steel at dewing environment [J]. J. Chin. Soc.Corros. Prot., 2002, 22(6): 355-358
(韩薇，贾薇，汪俊等. 凝露状态下SO2对A3钢腐蚀机理的影响 [J]. 中国腐蚀与防护学报，2002，22(6)：355-358)
[15] Dong J, Dong J H, Han E H, et al. Rusting evolvement of mild steel under wet/dry cyclic condition with pH4 NaHSO$_4$ solution [J].Sci. Technol. Laiwu St., 2007, 132(6): 30-33
(董杰，董俊华，韩恩厚等.低碳钢在工业大气环境中的锈蚀演化 [J]. 莱钢科技，2007，132(6)：30-33)
[16] Han W, Wang J, Wang Z Y, et al. Study on atmosphere corrosion of carbon steel and low alloy steels [J]. J. Chin. Soc. Corros. Prot.,2004, 24(3): 147-150, 154
(韩薇，汪俊，王振尧等. 碳钢与低合金钢耐大气腐蚀规律研究 [J]. 中国腐蚀与防护学报，2004，24(3)：147-150，154)
[17] Zhang Q C, Wu J S, Chen J G, et al. Analysis on the corrosion rust of weathering steel exposed in atmosphere [J]. J.Chin. Soc. Corros. Prot., 2001, 21(5): 297-300
(张全成，吴建生，陈家光等.暴露1年的耐大气腐蚀用钢表面锈层分析 [J]. 中国腐蚀与防护学报，2001，21(5)：297-300)
[18] Wang Y J, Huang B Y, Wang Y G, et al. Atmospheric corrosion and temporary protection of metal [M]. Beijing: Chemical Industry Press, 2007
(王一建，黄本元，王余高等. 金属大气腐蚀与暂时性保护 [M]. 北京：化学工业出版社，2007)
[19] Han W, Wang J, Wang Z Y, et al. Atmospheric corrosion of five low alloy steels [J]. Corros. Sci. Prot. Technol., 2003, 15(6): 315-319
(韩薇，汪俊，王振尧等. 低合金钢耐大气腐蚀规律研究 [J]. 腐蚀科学与防护技术，2003，15(6)：315-319)
[20] Liu H, Wei Y, Sun Y H. The formation mechanism from ferrihydrite to hematite when Fe(Ⅱ) used as a catalyst [J]. J. Mol.Catal. A: Chemical., 2005, 226: 135-140
[21] Itoh J, Sasaki T, Seo M, et al. In situ simultaneous measurement with IR-RAS and QCM for corosion of copper in a gaseous environment [J]. Corros. Sci., 1997,39(1): 193-197
[22] Itoh J, Sasaki T, Ohtsuka T. The Influence of oxide layers on initial corrosion behavior of copper in air containing water vapor and sulfur dioxide [J]. Corros. Sci., 2000,42: 1539-1551
[23] Arroyave C, Lopez F A, Morcillo M. The early atmospheric corrosion stages of carbon steel in acidic fogs [J].Corros. Sci., 1995, 37(11): 1751-1761
[24] Xu M Y, Fang G C, Pan Z T. Inorganic and Analytical Chemistry [M]. Wuhan: Wuhan University Press, 2002
(徐勉懿，方国春，潘祖亭. 无机及分析化学 [M]. 武汉：武汉大学出版社，2002) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
