文章基本信息

标题：Atmospheric corrosion performance of wire rope sling in a sulfur dioxide-polluted environment
本地全文：下载
作者：Shengli Li ; Pengyue Hu ; Xuefeng Zhao 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2017
卷号：9
期号：6
DOI：10.1177/1687814017707479
语种：English
出版社：Sage Publications Ltd.
摘要：The straddle suspender of a suspension bridge is made up of wire ropes. The suspension bridges of cross-sea bridges are located in a marine atmospheric environment. Sulfur dioxide is an important component of this environment; it can increase the corrosion rate and result in suspender fracture. The corrosion mechanism of a steel wire is explained macroscopically and microscopically. As indicated in the digital images, scanning electron microscope, and X-ray diffractometer, the indoor experiment reacted faster in the first 6 days but slower after the 6th day. The experiment tended to stabilize from the 12th day to 15th day. The corrosion products in the low SO₂ concentration condition are γ-FeOOH (lepidocrocite) and Fe₃O₄ (magnetite) while products in the high SO₂ concentration condition are γ-FeOOH (lepidocrocite), α-FeOOH (goethite), and Fe₃O₄ (magnetite). The composition of the corrosion products did not change significantly from the 6th day to 12th day. The higher the SO₂ concentration is, the more severe corrosion reacted on Fe. However, due to the effect of α-FeOOH, the Fe substrate was protected in the high SO₂ environment. A high SO₂ concentration generates more α-FeOOH. The tendency that the formula is exponential at both high and low SO₂ concentration is similar.
关键词：The straddle suspender; wire rope; scanning electron microscope; X-ray diffractometer; atmospheric corrosion; sulfur dioxide; corrosion rate; indoor corrosion experiment