[1]韩晶晶,窦国涛*.建筑用热镀锌板表面不同镧盐转化膜的制备与性能[J].电镀与精饰,2022,(2):1-6.[doi:doi： 10.3969/j.issn.1001-3849.2022.02.001]
　HAN Jingjing,DOU Guotao *.Preparation and Properties of Different Lanthanum Salt Conversion Films on Hot Galvanized Plate for Construction[J].Plating & Finishing,2022,(2):1-6.[doi:doi： 10.3969/j.issn.1001-3849.2022.02.001]
点击复制

建筑用热镀锌板表面不同镧盐转化膜的制备与性能(/HTML)

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2022年2
页码:
1-6
栏目:
出版日期:
2022-01-12

文章信息/Info

Title:
Preparation and Properties of Different Lanthanum Salt Conversion Films on Hot Galvanized Plate for Construction
作者:
韩晶晶1; 窦国涛2*
（1.郑州升达经贸管理学院，河南 郑州 450000； 2.郑州航空工业管理学院，河南 郑州 450000）
Author(s):
HAN Jingjing 1; DOU Guotao 2*
( 1. Zhengzhou Shengda University Zhengzhou 450000 China 2. Zhengzhou University of Aeronautics Zhengzhou 450000 China )
关键词:
热镀锌板; 常规镧盐转化膜; 改进镧盐转化膜; 耐腐蚀性能
Keywords:
hot galvanized plate conventional lanthanum salt conversion film improved lanthanum salt conversion film corrosion resistance
分类号:
TG174.4
DOI:
doi： 10.3969/j.issn.1001-3849.2022.02.001
文献标志码:
A
摘要:
分别采用常规镧盐处理液、含有柠檬酸的改进镧盐处理液对建筑用热镀锌板进行化学转化处理，制备了常规镧盐转化膜、改进镧盐转化膜。测试并比较了不同镧盐转化膜的结合力、形貌、成分和耐腐蚀性能。结果表明：常规镧盐转化膜和改进镧盐转化膜都由 Zn 、 La 、 C 和 O 元素组成，与热镀锌板结合较好，并且都能抑制热镀锌板腐蚀。与常规镧盐转化膜相比，改进镧盐转化膜表面裂缝得到修复，其致密性以及对热镀锌板表面覆盖均匀性较好，耐醋酸铅点蚀时间延长了约 20 s ，腐蚀电流密度降低到 0.954 μ A/cm 2 ，极化电阻和低频阻抗值分别提高到 2.47 k Ω ·cm 2 和 13.2 k Ω ·cm 2 。柠檬酸与镧离子形成络合物附着在热镀锌板表面参与成膜，并起到一定的缓蚀作用，使得改进镧盐转化膜覆盖均匀性和致密性提高，其耐腐蚀性能优于常规镧盐转化膜。
Abstract:
The conventional lanthanum salt conversion films and improved lanthanum salt conversion films were respectively prepared on the hot galvanized plates for construction through chemical conversion treatment using conventional lanthanum salt treatment solution and improved lanthanum salt treatment solution containing citric acid ， and the adhesion ， morphology ， composition and corrosion resistance of the different lanthanum salt conversion films were tested and compared. The results showed that both conventional lanthanum salt conversion films and improved lanthanum salt conversion films were composed of Zn ， La ， C and O elements ， combined well with hot-galvanized plates and can inhibit the corrosion of hot-galvanized sheets. Compared with the conventional lanthanum salt conversion films ， the cracks on the surface of improved lanthanum salt conversion films were repaired to a certain extent ， and its compactness and surface covering uniformity of the hot galvanized plates were better. The resistance time of lead acetate dropping was prolonged by about 20 s ， the corrosion current density was decreased to 0.954 μ A/cm 2 ， and the polarization resistance and low frequency impedance were increased to 2.47 k Ω ·cm 2 and 13.2 k Ω ·cm 2 ， respectively. The complex was formed by citric acid and lanthanum ions on the surface of hot galvanized plates to participate in the film formation ， which played a certain corrosion inhibition effect. The uniformity and compactness of the improved lanthanum salt conversion films were improved ， so its corrosion resistance was better than that of conventional lanthanum salt conversion films.

参考文献/References:



[1] 秦大伟 . 热镀锌锌层厚度控制技术研究与应用 [D]. 大连 : 大连理工大学 , 2014.

[2] 李志峰 , 孙超 , 张志新 , 等 . 热轧带钢无酸洗还原退火热镀锌技术的发展现状 [J]. 河北冶金 , 2019, (9): 1-10.

Li Z F, Sun C, Zhang Z X, et al. Development of hot-dip galvanizing technology of hot-rolled strip based on direct reduction annealing without acid-pickling [J]. Hebei Metallurgy, 2019, (9): 1-10 (in Chinese).

[3] Gong L H, Tang R R, Zhu Y Q, et al. Influence of silane coupling agent on the conversion film forming of galvanized steel treated with cerium salt [J]. International Journal of Minerals, Metallurgy, and Materials, 2012, (19): 800-804.

[4] Song Y K, Mansfeld F. Evaluation of the corrosion resistance of different galvanized steels treated in a cerium salt solution [J]. Materials and Corrosion, 2006, 56(4): 229-236.

[5] 孔纲 , 吴双 , 林德鑫 , 等 . 热镀锌层柠檬酸改进型铈盐转化膜的生长机理 [J]. 中国有色金属学报 , 2012, 22(5): 1390-1397.

Kong G, Wu S, Lin D X, et al. Growth mechanism of cerium salt conversion coating modified with citric acid on galvanized steel [J]. The Chinese Journal of Nonferrous Metals, 2012, 22(5): 1390-1397 (in Chinese).

[6] Zhang S H. Effect of silicate pretreatment on lanthanum conversion coating of hot-dip galvanized steel [J]. International Journal of Electrochemical Science, 2018, 13(11): 10247-10258.

[7] Kong G, Liu L Y, Lu J T, et al. Corrosion behavior of lanthanum-based conversion coating modified with citric acid on hot dip galvanized steel in aerated 1 M NaCl solution [J]. Corrosion Science, 2011, 53(4): 1621-1626.

[8] 彭天兰 , 满瑞林 , 徐斌 . 镀锌钢板表面耐腐蚀稀土镧盐转化膜的制备 [J]. 涂料工业 , 2008, 38(11): 51-53.

Peng T L, Man R L, Xu B. Preparation of the anti-corrosion lanthanum-based conversion film on galvanized steel [J]. Paint & Coatings Industry, 2008, 38(11): 51-53 (in Chinese).

[9] 孔纲 , 孙子文 , 吴双 , 等 . 热镀锌层柠檬酸改进型铈盐转化膜工艺 [J]. 电镀与涂饰 , 2012, 31(8): 21-24.

Kong G, Sun Z W, Wu S, et al. Cerium salt conversion coating improved by citric acid on hot-dip galvanized layer [J]. Electroplating & Finishing, 2012, 31(8): 21-24 (in Chinese).

[10] Zhang S H, Yang B, Li M D, et al. Effect of citric acid on cerium conversion coating of hot-dip galvanized steel[J]. Key Engineering Materials, 2019, (814): 144-151.

[11] Ji H P, Kim W S, Jo D H, et al. Effect of Ce conversion underlayer coating on the photo-catalytic activity of TiO 2 sol-gel film deposited on hot-dip GI [J]. Journal of Industrial and Engineering Chemistry, 2014, 20(4): 1965-1972.

[12] 吴海江 , 徐国荣 , 许剑光 , 等 . 热镀锌钢铈盐 / 硅烷复合膜的制备及其耐蚀性能 [J]. 材料保护 , 2013, 46(1): 16-18.

Wu H J, Xu G R, Xu J G, et al. Preparation and corrosion resistance evaluation of cerium salt/silane composite coating on hot-dip galvanized steel [J]. Materials Protection, 2013, 46(1): 16-18 (in Chinese).

[13] Sanaz H, Gernot E, Andreas B. Structure and formation of trivalent chromium conversion coatings containing cobalt on zinc plated steel [J]. Journal of The Electrochemical Society, 2018, 165(10): 657-669.

[14] Liu X F. Passivation effect of rare earth lanthanum on galvanized steel [J]. Applied Mechanics and Materials, 2014, (525): 31-34.

[15] 吴海江 , 卢锦堂 . 热镀锌钢表面铈转化膜的表征与腐蚀电化学行为 [J]. 中国有色金属学报 , 2011, 21(5): 1009-1015.

Wu H J, Lu J T. Characterization and electrochemical corrosion behavior of cerium conversion coating on hot-dip galvanized steel [J]. The Chinese Journal of Nonferrous Metals, 2011, 21(5): 1009-1015 (in Chinese).

[16] 花天顺 , 宋仁国 , 宗玙 , 等 . 恒载荷下的微弧氧化后 7050 铝合金在不同 pH 值 NaCl 溶液中的腐蚀行为 [J]. 表面技术 , 2020, 49(5): 269-278.

相似文献/References:

[1]陈天丽. 处理时间对建筑用热镀锌板镧盐转化膜耐蚀性的影响 [J].电镀与精饰,2022,(7):24.[doi:10.3969/j.issn.1001-3849.2022.07.005]
　CHEN Tianli.Effect of Treatment Time on Corrosion Resistance of Lanthanum Salt Conversion Films on Hot Galvanized Plate Used in Construction[J].Plating & Finishing,2022,(2):24.[doi:10.3969/j.issn.1001-3849.2022.07.005]

备注/Memo

备注/Memo:
收稿日期： 2021-06-25 修回日期： 2021-08-19 作者简介： 韩晶晶（ 1987 —），女，本科，讲师，主要研究方向：建筑工程材料、腐蚀与防护等。 email ： hanjing05090@163.com 通信作者： 窦国涛（ 1985 —），男，博士，讲师， email ： wuzuoxun98552@126.com 基金项目： 河南省教育厅项目（ 202102310547 ）?/html>
更新日期/Last Update: 2022-01-23