[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):24-29.[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,(7):24-29.[doi:10.3969/j.issn.1001-3849.2022.07.005]
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处理时间对建筑用热镀锌板镧盐转化膜耐蚀性的影响
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《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2022年7
页码:
24-29
栏目:
出版日期:
2022-07-15

文章信息/Info

Title:
Effect of Treatment Time on Corrosion Resistance of Lanthanum Salt Conversion Films on Hot Galvanized Plate Used in Construction
作者:
陈天丽
(郑州升达经贸管理学院 建筑工程学院,河南 新郑 451191)
Author(s):
CHEN Tianli
(Department of Architectural Engineering,Shengda Trade Economics & Management College of Zhengzhou,Xinzheng 451191,China)
关键词:
镧盐转化膜热镀锌板处理时间耐醋酸铅点滴时间盐雾实验
Keywords:
lanthanum salt conversion film hot galvanized plate treatment time lead acetate resistance time salt spray test
分类号:
TG174.4
DOI:
10.3969/j.issn.1001-3849.2022.07.005
文献标志码:
A
摘要:
将热镀锌板浸入含有柠檬酸的处理液中制备镧盐转化膜,并研究处理时间对镧盐转化膜形貌、表面成分、物相及耐蚀性的影响。结果表明:镧盐转化膜含有 Zn 、 La 、 C 和 O 元素,主要由 ZnO 和 La 2 O 3 相组成。随着处理时间延长, La 元素质量分数呈增加趋势,伴随着 Zn 元素质量分数降低,镧盐转化膜的形貌先趋于致密而后表面龟裂出现脱落现象,导致耐蚀性先逐步提高而后下降。对热镀锌板化学转化处理 8 min 后,表面出现白锈的时间延长了约 30 h ,耐醋酸铅点滴时间延长了约 40 s ,膜层电阻和电荷转移电阻都提高约 2 倍,耐蚀性明显提高。
Abstract:
: Hot galvanized plate was immersed in a treatment solution containing citric acid to prepared lanthanum salt conversion films , and the effect of treatment time on the morphology , surface composition , phase and corrosion resistance of lanthanum salt conversion films was studied. The results showed that lanthanum salt conversion film contains Zn , La , C and O elements , and was composed of ZnO and La 2 O 3 phase. With the extension of treatment time , the mass fraction of La element shows an increasing trend along with the decrease of the mass fraction of Zn element , and the morphology of lanthanum salt conversion films tend to be dense at first and then the surface cracked and fell off , leading to the corrosion resistance increased at first and then decreased. When chemical conversion treatment of hot galvanized plate for 8 min , the time of white rust appeared on the surface was prolonged by about 30 h , the lead acetate resistance time was prolonged by about 40 s , and the film resistance and charge transfer resistance were increased by about two times , indicating that the corrosion resistance of hot galvanized plate was significantly improved.

参考文献/References:



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备注/Memo

备注/Memo:
收稿日期: 2021-08-05 修回日期: 2021-11-06 作者简介: 陈天丽( 1984 -),硕士,讲师, Email : huajing0000@126.com 基金项目: 河南省科技攻关项目( 212102310972 )、河南省高等学校重点科研项目( 20B560016 )
更新日期/Last Update: 2022-07-09