LI Junhui*,YANG Guohua,SONG Tiechuang,et al.Anti-Corrosion Study of Steel Cable Bridge[J].Plating & Finishing,2021,(5):49-54.[doi:10.3969/j.issn.1001-3849.2021.05.008]
钢制电缆桥架防腐蚀试验研究
- Title:
- Anti-Corrosion Study of Steel Cable Bridge
- 文献标志码:
- A
- 摘要:
- 为了使钢制电缆桥架较好地满足使用要求，通过磷化处理对制造钢制电缆桥架常用材料Q235A钢板进行防腐蚀保护，并对磷化膜进行封闭处理。使用扫描电镜及能谱仪表征了裸钢板、未处理的磷化膜和处理后的磷化膜的表面形貌和成分，并对比分析了它们的耐腐蚀性能。结果表明，裸钢板、未处理的磷化膜和处理后的磷化膜表面形貌和成分有所不同，磷化膜完全覆盖裸钢板表面，阻止了腐蚀性溶液渗透，从而起到抑制裸钢板腐蚀的作用。封闭处理使磷化膜的耐腐蚀性能进一步提高，主要归因于硅酸钠通过物理作用填充磷化膜晶粒间的缝隙，使磷化膜表面更加平整致密，起到可靠的隔离保护作用。研究证实，对基材进行磷化并对磷化膜进行封闭处理的方法可作为钢制电缆桥架防腐蚀保护的方式。
- Abstract:
- In order to make steel cable bridge meet the use requirements, the Q235A steel plate which was commonly used for steel cable bridge was protected by phosphating treatment, and the phosphating film was treated with sealing solution. The surface morphology and composition of bare steel plate, untreated phosphating film and treated phosphating film were characterized by scanning electron microscope （SEM） and energy spectrum instrument （EDS）, and the corrosion resistance was compared and further analyzed.The results show that the surface morphology and composition of bare steel plate, untreated phosphating film and treated phosphating film are different. The phosphating film completely covers the surface of bare steel plate and prevents the penetration of corrosive solution, thus inhibiting the corrosion of bare steel plate. Sealing treatment can further improve the corrosion resistance of phosphating film, which was mainly attributed to sodium silicate filling the gaps between phosphating film grains through physical action.Therefore, the surface of phosphating film is smoother and denser, which can provide reliable isolation and protection. It is proved that the method of phosphating the base material and sealing the phosphating film can be used as the anti-corrosion protection method of steel cable tray.
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备注/Memo
收稿日期： 2020-09-16；修回日期： 2020-10-05
通信作者： 李俊辉，Email：li_pinggao20@sina.com
基金项目： 青海省重点研发与转化计划(2019-GX-170)