| Initial atmospheric corrosion of zinc in presence of Na2SO4 and （NH4）2S04 |
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| 基金项目： | Project（50261004） supported by the National Natural Science Foundation of China |
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| 摘 要： |
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| 关 键 词： | 锌 Na2SO4 （NH4）2SO4 大气腐蚀 微量天平 |
| 收稿时间： | 2005-12-14 |
| 修稿时间： | 2006-03-15 |
Initial atmospheric corrosion of zinc in presence of Na2SO4 and (NH4)2SO4 |
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| Affiliation: | 1. Department of Chemistry, Yunnan University, Kunming 650091, China;2. Department of Chemistry, Yunnan Nationalities University, Kunming 650092, China;3. Stake Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;1. College of Materials and Chemical Engineering, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China;2. Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, China;3. College of Mechanical and Power Engineering, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China;1. Laboratoire d’Application de la Chimie aux Ressources et Substances Naturelles et à l’Environnement, Département de Chimie, Université de Carthage, Faculté des Sciences de Bizerte, Zarzouna, Bizerte 7021, Tunisia;2. Laboratoire de physique des matériaux, Unité de service commun spectromètre de surfaces, Université de Carthage, Faculté des Sciences de Bizerte, Zarzouna, Bizerte 7021, Tunisia;3. Departamento de Química, Universidad de La Laguna, 38206 La Laguna, Spain;4. Departamento de Química Inorgánica e Ingeniería Química, Campus de Rabanales, Edificio Marie Curie, 14071 Córdoba, Spain;1. Earth Sciences Department, University of Huelva, Campus “El Carmen”, E-21071 Huelva, Spain;2. Ecole Polytechnique Fédérale de Lausanne, Environmental Microbiology Laboratory (EML), Station 6, CH-1015 Lausanne, Switzerland;1. School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China;2. Institute of Marine Science and Technology, Shandong University, Qingdao 266100, China;1. Department of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China;2. Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, USA;3. Shandong Key Laboratory of Corrosion Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;1. School of Chemical Science and Technology, Yunnan University, Kunming 650091, China;2. Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming 650091, China |
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| Abstract: | Initial atmospheric corrosion of zinc in the presence of Na2SO4 and (NH4)2SO4 was investigated via quartz crystal microbalance(QCM) in laboratory at relative humidity(RH) of 80% and 25 °C. The results show that both Na2SO4 and (NH4)2SO4 can accelerate the initial atmospheric corrosion of zinc. The combined effect of Na2SO4 and (NH4)2SO4 on the corrosion of zinc is greater than that caused by (NH4)2SO4 and less than that caused by Na2SO4. Fourier transform infrared spectroscopy(FTIR), X-ray diffractometry(XRD) and scanning electron microscopy(SEM) were used to characterize the corrosion products of zinc. (NH4)2Zn(SO4)2, Zn4SO4(OH)6·5H2O and ZnO present on zinc surface in the presence of (NH4)2SO4 while Zn4SO4(OH)6·5H2O and ZnO are the dominant corrosion products on Na2SO4-treated zinc surface. Probable mechanisms are presented to explain the experimental results. |
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