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[1]孙伟*,杨辉,徐秀凤,等.促进剂对建筑结构钢锌钙系磷化膜形貌和耐蚀性的影响[J].电镀与精饰,2023,(4):8-12.[doi:10.3969/j.issn.1001-3849.2023.04.002]
　Sun Wei*,Yang Hui,Xu Xiufeng,et al.Effects of accelerating agents on morphology and corrosion resistance of zinc-calcium phosphating films on building structural steel[J].Plating & Finishing,2023,(4):8-12.[doi:10.3969/j.issn.1001-3849.2023.04.002]
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促进剂对建筑结构钢锌钙系磷化膜形貌和耐蚀性的影响


《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG] 卷: 期数: 2023年4 页码: 8-12 栏目: 出版日期: 2023-04-15
Title:
Effects of accelerating agents on morphology and corrosion resistance of zinc-calcium phosphating films on building structural steel
作者:
（1.青岛黄海学院，山东 青岛 266427； 2.青岛海川建设集团有限公司，山东 青岛 266427）
Author(s):
（1.Qingdao Huanghai University， Qingdao 266427， China；2.Qingdao Haichuan Construction Group Co.， Ltd.， Qingdao 266427， China）

关键词:
促进剂; 锌钙系磷化膜; 形貌; 成分; 耐蚀性
Keywords:
accelerating agents ;  zinc-calcium phosphating films ;  morphology ;  composition ;  corrosion resistance
分类号:
TB43
DOI:
10.3969/j.issn.1001-3849.2023.04.002
文献标志码:
A
摘要:
在含硝酸盐的基础磷化液中分别添加钼酸钠、硝酸镧以及它们的组合作为促进剂，在建筑结构钢表面制备出不同锌钙系磷化膜。研究了促进剂对不同磷化膜的形貌、成分和耐蚀性的影响。结果表明：钼酸钠、硝酸镧以及它们的组合作为促进剂都可以使磷化膜结晶致密化，进而提高磷化膜的耐蚀性。尤其是钼酸钠和硝酸镧的组合作为促进剂，可以明显改善磷化膜的形貌，获得的磷化膜具有良好的耐蚀性，其容抗弧半径最大，电荷转移电阻和低频时的阻抗值分别达到 2.476 k Ω ·cm 2 、 2.147 k Ω ·cm 2 ，表面的液滴变色时间达到 165 s 。硝酸镧作为促进剂不会对磷化膜的成分产生影响，而钼酸钠以及钼酸钠和硝酸镧的组合作为促进剂对磷化膜的成分有一定影响。使用含钼酸钠和硝酸镧的基础液获得的锌钙系磷化膜更适用于建筑结构钢防腐蚀保护。
Abstract:
： Different zinc-calcium phosphating films were prepared on the surface of building structural steel by adding sodium molybdate ， lanthanum nitrate and their combination as accelerating agents to the basic phosphating solution containing nitrate. The effect of accelerating agents on the morphology ， composition and corrosion resistance of different phosphating films was studied. The results showed that sodium molybdate ， lanthanum nitrate and their combination as accelerating agents could promote crystallization densification and thus improve the corrosion resistance of phosphating films. Especially the combination of sodium molybdate and lanthanum nitrate as accelerating agents can obviously improve the morphology of phosphating films ， and therefore the phosphating film has good corrosion resistance. The capacitive reactance arc radius was the largest ， the charge transfer resistance and impedance at low frequency reached 2.476 k Ω ·cm 2 and 2.147 k Ω ·cm 2 respectively ， and the discoloration time of droplet on the surface of phosphating film reached 165 s. Lanthanum nitrate used as accelerating agents has no effect on the composition of phosphating film ， while sodium molybdate and the combination of sodium molybdate and lanthanum nitrate used as accelerating agents have some effect on the composition of phosphating film. The zinc-calcium phosphating film obtained using the basic phosphating solution con taining nitrate sodium molybdate and lanthanum nitrate was more suitable for anti-corrosion protection of building structural steel.

参考文献/References:



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备注/Memo

收稿日期： 2020-08-23 修回日期： 2020-09-16 作者简介 ： 孙伟（ 1981 —），女，硕士，副教授，主要研究方向：建筑结构材料，表面技术等， email ： sun_huang0619@126.com 基金项目： 青岛黄海学院校级科研项目（ 2020KJ04 ）

更新日期/Last Update: 2023-04-14