Ca2+、Mg2+对锌锰系磷化膜性能的影响

陆国建, 孙胜龙, 朱小辉, 王爱祥

doi:10.16577/j.issn.1001-1560.2025.0091

材料保护 >

2025 , Vol. 58 >Issue 5: 184 - 190

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0091

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Ca²⁺、Mg²⁺对锌锰系磷化膜性能的影响

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1.浙江五源科技股份有限公司 2.浙江金固股份有限公司

朱小辉(1984－) ，硕士研究生，主要从事涂装前处理化学材料的开发，E-mail: zxh＠pentatomic.com

收稿日期: 2024-10-23

修回日期: 2024-12-05

录用日期: 2024-12-10

网络出版日期: 2025-06-10

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Study on the Influence of Ca^2＋and Mg^2＋ on the Properties of Zinc-Manganese Phosphate Coatings

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(1.Zhejiang Wuyuan Technology Co.， Ltd.， Jiaxing 314500， China； 2.Zhejiang Jingu Co.， Ltd.， Hangzhou 311400， China)

ZHU Xiaohui (1984)， Master， Research Focus: Development of Chemical Materials for Pre-Treatment of Coatings，E-mail: zxh＠pentatomic.com

Received date: 2024-10-23

Revised date: 2024-12-05

Accepted date: 2024-12-10

Online published: 2025-06-10

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摘要

随着环保要求的提高，锌锰镍三元磷化工艺因镍离子污染问题而受到严格限制，因此，无镍磷化工艺在阴极电泳中的应用备受关注。采用Ca2＋及Mg2＋代替Ni2＋，通过X 射线衍射(XRD)、扫描电子显微镜(SEM)等手段分析了Ca2＋及Mg2＋对冷轧板磷化膜微观形貌、膜重及溶出率的影响，并检测了磷化膜与阴极电泳的配套性能。结果表明，Ca2＋可以细化晶粒，Mg2＋可以增加磷化膜的厚度，Ca2＋及Mg2＋加入可提高磷化膜的耐电泳漆溶解性能。加入钙镁的新型锌锰磷化液中的各离子浓度稳定可控，磷化电泳后的涂层能够耐800 h 的中性盐雾试验，可满足阴极电泳涂装单边扩展≤2 mm 要求。

关键词： 锌锰系; Ca^2＋; Mg^2＋; 磷化膜; 阴极电泳

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陆国建, 孙胜龙, 朱小辉, 王爱祥 . Ca²⁺、Mg²⁺对锌锰系磷化膜性能的影响[J]. 材料保护, 2025 , 58(5) : 184 -190 . DOI: 10.16577/j.issn.1001-1560.2025.0091

Abstract

With the increasing environmental requirements， the zinc manganese nickel ternary phosphating process is strictly restricted due to nickel pollution， therefore， nickel-free phosphating technology for cathodic electrophoresis is receiving attention.In this study， Ca2＋and Mg2＋were used instead of Ni2＋， and the effects of Ca2＋and Mg2＋on the microstructure， film weight and dissolution rate of the phosphating film formed on cold-rolled plates were analyzed by XRD， SEM and other methods.The matching performance of the phosphating film with cathodic electrophoresis was also tested.It was shown that the grain size was refined by Ca2＋， the film thickness was increased by Mg2＋， and the resistance of the phosphating film to electrophoretic-paint dissolution was improved by the combined addition of Ca2＋and Mg2＋.The new zinc-manganese phosphating solution with added calcium and magnesium ions was found to have stable and controllable ion concentrations.After phosphating electrophoresis， the resulting coating was able to withstand a neutral salt-spray test for 800 h and met the requirement for cathodic electrophoretic coatings of a single-sided extension of 2 mm or less.

Key words： zinc-manganese series; Ca^2＋; Mg^2＋; phosphating film; cathodic electrophoresis

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