电气化接触网零部件在典型环境的腐蚀研究

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Abstract Abstract：Research purposes： The railway transport plays a very important role in the development of our domestic economy. The electrified overhead contact system is a special power line erected along the railway. The metallic components of overhead contact system are inevitably corroded in different atmospheric environment, which will not only reduce lifetime of the metallic components and increase their maintenance cost, but also is a threat to safe operation of electrified railway. Therefore, it is necessary to study the corrosion influence of typical atmospheric environment on metallic components. Some new coating protection technologies should be developed to ensure the safe operation of electrified railway and reduce the maintenance cost of overhead contact system for electrified railway.

Research conclusions：(1) The marine atmospheric environment is characterized by high air humidity and salt content. The metallic components are corroded seriously in the marine atmospheric environment polluted by acid gas. (2) The materials for catenary metallic components are diverse, but at present, only metallic component with Q235 material has been protected by the different levels of hot-dip galvanized anti-corrosion treatment. As the hot dip galvanized coating in the different corrosion environment medium is different in corrosion resistance, it is difficult that single hot dip galvanized anti-corrosion measure is used for the catenary metallic components to meet the development requirements of today's electrified railway. (3) To use organic coating for protection of existing catenary component can greatly improve the anticorrosion ability of catenary components in the typical atmospheric environment, increase the service life, save the maintenance cost and improve the reliability of catenary components. (4) The research achievement can be applied in the design and use of overhead contact system of electrified railway.

Key words： Key words: electrified railway overhead contact system atmospheric corrosion

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2015/V32/I3/81

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