[1]张伟华*,张颖超,孙 伟,等.柠檬酸对建筑用16Mn钢磷化膜物相与耐蚀性的影响[J].电镀与精饰,2022,(6):21-25.[doi:10.3969/j.issn.1001-3849.2022.06.005]
　ZHANG Weihua*,ZHANG Yingchao,SUN Wei,et al.Effect of Citric Acid on Phase and Corrosion Resistance of Phosphating Films on 16Mn Steel for Construction[J].Plating & Finishing,2022,(6):21-25.[doi:10.3969/j.issn.1001-3849.2022.06.005]
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柠檬酸对建筑用16Mn钢磷化膜物相与耐蚀性的影响()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2022年6
页码:
21-25
栏目:
出版日期:
2022-06-15

文章信息/Info

Title:
Effect of Citric Acid on Phase and Corrosion Resistance of Phosphating Films on 16Mn Steel for Construction
作者:
张伟华*; 张颖超; 孙 伟; 赵铭涛; 赵 刚
（青岛黄海学院，山东 青岛 266427）
Author(s):
ZHANG Weihua*;  ZHANG Yingchao;  SUN Wei;  ZHAO Mingtao;  ZHAO Gang
( Qingdao Huanghai University Qingdao 266427 China )
关键词:
物相; 耐蚀性; 磷化膜; 柠檬酸
Keywords:
phase; ??orrosion resistance; ??hosphating film; ??itric acid
分类号:
TB43
DOI:
10.3969/j.issn.1001-3849.2022.06.005
文献标志码:
A
摘要:
向磷化液中添加柠檬酸，采用浸渍法在建筑用 16Mn 钢表面制备磷化膜，并研究了柠檬酸浓度对磷化膜物相、形貌与耐蚀性的影响。结果表明：添加不同浓度柠檬酸制备的 5 种磷化膜都由 Zn 3 （ PO 4 ） 2 ·4H 2 O 和 Zn 2 Fe （ PO 4 ） 2 ·4H 2 O 相组成，但 5 种磷化膜的形貌和耐蚀性存在一定差异。随着柠檬酸浓度从 1 g/L 增加到 4 g/L ，磷化膜表面平整度和致密性先逐步改善然后降低，阻抗模值和相位角都呈现先增大后减小的趋势。当柠檬酸浓度为 2 g/L 时，磷化膜结晶较均匀致密，平整度较好，阻抗模值和最大相位角分别达到 2819 Ω ·cm 2 、 58.4 ° ，该磷化膜能够有效提高 16Mn 钢的耐蚀性。而当柠檬酸浓度过高时，会抑制成膜过程，导致磷化膜表面平整度和致密性降低，耐蚀性明显下降。
Abstract:
： Phosphating films were prepared on 16Mn steel for construction by impregnation method from the phosphating solution containing citric acid ， and the effect of the concentration of citric acid on the phase ， morphology and corrosion resistance of phosphating films was studied. The results showed that five phosphating films prepared by adding different concentration of citric acid had the same phase ， which was composed of Zn 3 （ PO 4 ） 2 ·4H 2 O and Zn 2 Fe （ PO 4 ） 2 ·4H 2 O. However ， the morphology and corrosion resistance of five phosphating films were different. With the increase of the concentration of citric acid from 1 g/L to 4 g/L ， the surface flatness and compactness of phosphating film were gradually improved first and then decreased ， and the impedance modulus and phase angle were increased first and then decreased. When the concentration of citric acid was 2 g/L ， the phosphating film was uniform and compact ， and the impedance modulus and the maximum phase angle reached 2819 Ω ·cm 2 and 58.4 ° ， respectively ， which can effectively improve the corrosion resistance of 16Mn steel. However ， when the concentration of citric acid was too high ， the film forming process will be inhibited and the surface flatness and compactness of the phosphating films reduced ， resulting in significantly decline of corrosion resistance.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期： 2021-03-19 修回日期： 2021-04-22 通信作者： 张伟华（ 1974 —），男，教授，主要研究方向：表面技术、应用化学、电化学等， email ： zhang_266427@163.com 基金项目： 青岛黄海学院校级科研项目（ 2019KJ04 ）
更新日期/Last Update: 2022-06-12