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中国腐蚀与防护学报  2014, Vol. 34 Issue (1): 75-81    DOI: 10.11902/1005.4537.2013.065
  本期目录 | 过刊浏览 |
高效无公害钢铁表面亮化液研究
苏义祥1(), 赵晓莉2, 郭海锋2, 徐壮2, 雷雨2
1. 兰州理工大学 甘肃省有色金属新材料重点实验室 兰州 730050
2. 兰州理工大学材料科学与工程学院 兰州 730050
Efficient and Pollution-free Brightening Solution for Steel Surface
SU Yixiang1(), ZHAO Xiaoli2, GUO Haifeng2, XU Zhuang2, LEI Yu2
1. State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
2. School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
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摘要: 

研制了一种用于钢铁构件涂层制备的预处理综合亮化液,集除油、除锈、磷化、钝化为一体,具有高效环保、成本低廉等特点,可在常温下擦拭或浸渍钢铁表面。实验通过单因素和正交实验方案确定了亮化液组分,其中不含有F-,NO2-和Cr3+等毒性离子。通过光学显微镜观察了磷化膜形貌,并测试了亮化液总酸度点、游离酸度点、耐蚀性等。结果表明:用该亮化液处理试样后表面形成的磷化膜薄而致密均匀,耐蚀性好,可直接用于涂层的制备。

关键词 钢铁表面亮化液磷化膜    
Abstract

A comprehensive brightening solution was developed for pretreatment of iron and steel parts before coatings application. The brightening solution can act as agent for simultaneous removal oil or rust on and phosphatization of the steel surface. The solution is free from F-, NO2-, Cr3+ and other toxic ions, thereby environmental friendly. The steel parts can be easily pretreated by wiping with or dipping in the solution at ambient temperature. The surface and cross sectional morphology of phosphating film was observed by OM and the corrosion resistance of the film was also examined. It showed that the phosphating films formed on the steel surface is dense, thin and uniform, with excellent corrosion resistance. Coatings can be applied directly on the phosphatized steels.

Key wordssteel surface    brightening solution    phosphating film
收稿日期: 2013-05-06     
ZTFLH:  TG178  

引用本文:

苏义祥, 赵晓莉, 郭海锋, 徐壮, 雷雨. 高效无公害钢铁表面亮化液研究[J]. 中国腐蚀与防护学报, 2014, 34(1): 75-81.
Yixiang SU, Xiaoli ZHAO, Haifeng GUO, Zhuang XU, Yu LEI. Efficient and Pollution-free Brightening Solution for Steel Surface. Journal of Chinese Society for Corrosion and protection, 2014, 34(1): 75-81.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.065      或      https://www.jcscp.org/CN/Y2014/V34/I1/75

Test No. HCl ZnO KClO3 Zn(H2PO4)2 C4H6O6 Zn(NO3)2
1 + + + + + +
2 + + + + + -
3 + - + + + +
4 - + + + + +
5 + + + - + +
6 + + + + - +
7 + + - + + +
表1  单因素实验
Test No. H3PO4
mL/L
ZnO
g/L
KClO3
g/L
Zn(H2PO4)2
g/L
C4H6O6
g/L
Zn(NO3)2
g/L
OP-10
g/L
CuSO4intravenous drip time / s
1 300 10 3 8 6 3 8 77
2 300 12 4 9 8 4 10 62
3 300 14 5 10 10 5 12 125
4 310 10 3 9 8 5 12 68
5 310 12 4 10 10 3 8 75
6 310 14 5 8 6 4 10 128
7 320 10 4 8 10 4 12 176
8 320 12 5 9 6 5 8 87
9 320 14 3 10 8 3 10 169
10 300 10 5 10 8 4 8 85
11 300 12 3 8 10 5 10 92
12 300 14 4 9 6 3 12 78
13 310 10 4 10 6 5 10 158
14 310 12 5 8 8 3 12 98
15 310 14 3 9 10 4 8 89
16 320 10 5 9 10 3 10 82
17 320 12 3 10 6 4 12 63
18 320 14 4 8 8 5 8 56
表2  L18(37) 正交实验及CuSO4溶液点滴实验结果
图1  亮化液各组分用量与耐蚀性的关系曲线
Test item Test result Normative reference Standard code
Exterior of lighting solution Colorless clear liquid,
no precipitation or floc
GB /T 12612- 2005 ---
pH of lighting solution 1 GB /T 12612- 2005 ---
Density / gcm-3 1.22 GB /T 12612- 2005 ---
Total acidity point of lighting solution 1068 GB /T 12612- 2005 ---
Free acidity of lighting solution 406 GB /T 12612- 2005 ---
Exteriorof phosphate coating Gray GB /T 12612- 2005 ---
Corrosion resistance against 3%NaCl solution / h 3 GB /T 12612- 2005 ---
Corrosion resistance against CuSO4 intravenous drip / s 204 GB /T 12612- 2005 ---
Antirust period of phosphating film / d >90 GB /T 12612- 2005 ≥7
Bonding strength between phosphating film and substrate ISO0 level
(ASTM5B level)
ISO-2409/ASTM
D3359-B
≥1 level
(4B level)
表3  亮化液和磷化膜主要性能测试结果
图2  磷化膜表面形貌
图3  涂层与基体结合面形貌
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