广东工业大学学报 ›› 2016, Vol. 33 ›› Issue (04): 74-78.doi: 10.3969/j.issn.1007-7162.2016.04.013

• 综合研究 • 上一篇    下一篇

热浸镀锌层在中性盐雾试验中的防腐性能研究

胡大伟1， 李国新2， 赵高文1   

  1. 1.榆林学院 建筑工程系,陕西 榆林 719000; 2.西安建筑科技大学 材料与矿资学院,陕西 西安 710075
  • 收稿日期:2015-11-07 出版日期:2016-08-02 发布日期:2016-08-02
  • 作者简介:胡大伟（1980-），男，讲师，硕士，主要研究方向为建筑结构和材料性能研究.E-mail：hudawei@yulinu.edu.cn
  • 基金资助:

    榆林市产学研合作项目(2014cxy-05);榆林学院博士、硕士科研启动基金项目（14GK32）

AntiCorrosion Performance of Hotdip Galvanized Coating During Neutral Salt Spray Test

Hu Da-wei1, Li Guo-xin2, Zhao Gao-wen1   

  1. 1. Department of Architectural Engineering, Yulin University, Yulin 719000, China；2. School of Materials and Minerals, Xi’an University of Architecture & Technology, Xi’an 710055, China
  • Received:2015-11-07 Online:2016-08-02 Published:2016-08-02

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摘要：

采用2种定制的热浸镀锌试件，经5000 h中性盐雾试验后发现镀层防腐性能存在显著差异.采用镀锌层厚度损耗测试法、X射线衍射分析法（XRD）和扫描电镜分析法（SEM）分别测试了镀层的厚度损耗量、盐雾试验前后的晶体物质组成和腐蚀前后的微观形貌.研究表明:2种热浸镀锌试件在盐雾腐蚀过程中的产物和机理相似，而影响其防腐性能的主要因素为热浸镀锌的生产工艺、腐蚀产物的致密程度.

关键词: 热浸镀锌；中性盐雾试验；防腐性能

Abstract:

Two hot-dip galvanized products are applied onto the steel substrates, then the specimens are tested for 5000h by the neutral salt spray and there are obvious differences in the anti-corrosion performance between the coatings. The thickness loss of coatings, crystal material compositions and microstructures of the coatings are analyzed by Zinc coating thickness loss test method, differential scanning calorimetry (DSC), and X-ray diffraction analysis (XRD). The results show that there is no significant difference of the corrosion products and corrosion mechanisms between two coatings. Nevertheless, the hot-dip galvanized production process, the degree of densification of the corrosion products in coating are the primary factors influencing the anticorrosion performance of the hot-dip galvanized coating.

Key words: hot-dip galvanized; neutral salt spray test; anti-corrosion performance

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