Effect of Phosphoric Acid on Corrosion Performance of Vinyl Chloride-acrylic Copolymer Coating on Rust Steel

doi:10.11902/1005.4537.2015.106

Journal of Chinese Society for Corrosion and protection

2016, Vol. 36

Issue (3): 281-286 DOI: 10.11902/1005.4537.2015.106

Orginal Article

Current Issue | Archive | Adv Search

Effect of Phosphoric Acid on Corrosion Performance of Vinyl Chloride-acrylic Copolymer Coating on Rust Steel

Siqi WANG¹,Liwei ZHU²,Fuchun LIU¹(

),En-Hou HAN¹,Zhenyu WANG¹,Zhouhai QIAN²

1. Environmental Corrosion Research Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2. State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China

Download:

HTML

PDF(2198KB)
Export: BibTeX | EndNote (RIS)

Abstract

A rust converter coating, using vinyl chloride-acrylic copolymer as film-forming substance and phosphoric acid as rust converter, was prepared on a rust Q235 carbon steel. Then the influence of the mass fraction of phosphoric acid on the coating performance was studied by means of salt spray tests and electrochemical impedance spectroscopy (EIS). The reaction of phosphoric acid with the rust was examined through microscopic analysis of the surface morphology of the coating. The results showed that phosphoric acid can react with the lepidocrocite in the rust, forming a dense conversion layer on the steel. When the mass fraction of phosphoric acid in the coating is 10%, the property of the conversion layer showed better corrosion resistant performance than other coating samples with lower mass fraction of phosphoric acid.

Key words: coating phosphoric acid rust converter surface tolerant coating EIS

Received: 10 August 2015

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Siqi WANG
	Liwei ZHU
	Fuchun LIU
	En-Hou HAN
	Zhenyu WANG
	Zhouhai QIAN

Cite this article:

Siqi WANG,Liwei ZHU,Fuchun LIU,En-Hou HAN,Zhenyu WANG,Zhouhai QIAN. Effect of Phosphoric Acid on Corrosion Performance of Vinyl Chloride-acrylic Copolymer Coating on Rust Steel. Journal of Chinese Society for Corrosion and protection, 2016, 36(3): 281-286.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2015.106 OR https://www.jcscp.org/EN/Y2016/V36/I3/281

Table 1 Coating formulation

Fig.1 SEM images (a, c) and EDX results (b, d) of the surface of P0 (a, b) and P10 (c, d) coated plates

Fig.2 XRD spectra of the surfaces of coated plates after salt spray test for 800 h

Fig.3 Impedance plots of the coatings after immersion for 20 h (a), 200 h (b), 400 h (c) and 1000 h (d) in 3.5%NaCl solution

Fig.4 Nyquist plots of the coatings after immersion for 20 h (a), 200 h (b), 400 h (c) and 1000 h (d) in 3.5%NaCl solution

Fig.5 Equivalent circuits for the intact coating without (a) and with (b) Warburg impedance

Fig.6 Changes of coating resistance (a) and charge transfer resistance (b) of coated plates with immersion time in 3.5%NaCl solution

[1]	Zhang H, Sun Y L, Cheng W Y.Actuality and development of waterborne coatings for rusty iron and steel surface[J]. Chem. Adhes.,2007, 29(2): 122
[1]	(张惠, 孙玉林, 程万远. 水性带锈涂料的现状与发展[J]. 化学与黏合, 2007, 29(2): 122)
[2]	Collazo A, Nóvoa X R, Pérez C, et al.The corrosion protection mechanism of rust converters: An electrochemical impedance spectroscopy study[J]. Electrochim. Acta, 2010, 55(21): 6156
[3]	Collazo A, Nóvoa X R, Pérez C, et al.EIS study of the rust converter effectiveness under different conditions[J]. Electrochim. Acta,2008, 53: 7565
[4]	Barrero C A, Ocampo L M, Arroyave C E.Possible improvements in the action of some rust convters[J]. Corros. Sci., 2001, 43: 1003
[5]	Chen Z H, Liu W J, Chen H H, et al.Preparation of multifunctional waterborne rust-tolerant anti-rust coating[J]. Electroplat. Finish.,2013, 32(12): 68
[5]	(陈中华, 刘文杰, 陈海洪等. 水性多功能带锈防锈涂料的研制[J]. 电镀与涂饰, 2013, 32(12): 68)
[6]	Xiang Y H, Zhang S.Preparation of epoxy resin primer for rusted and wetted steel surface[J]. Mater. Prot., 2014, 47(12): 52
[6]	(向永华, 张松. 一种新型带湿带锈型环氧底漆的研制[J]. 材料保护, 2014, 47(12): 52)
[7]	Liu Y X, Lv Y H, Wei S C, et al.Development of the silicone-acrylate waterborne rust-based antirusting coatings[J]. Shanghai Coat., 2014, 52(2): 1
[7]	(刘玉欣, 吕耀辉, 魏世丞等. 有机硅-丙烯酸酯水性带锈防锈涂料的研制[J]. 上海涂料, 2014, 52(2): 1)
[8]	Yang Z B, Li Y D, Shi H.Status and development trends of surface tolerant coating[J]. Electroplat. Finish., 2009, 28(1): 61
[8]	(杨振波, 李运德, 施华. 低表面处理涂料技术现状及发展趋势[J].电镀与涂饰, 2009, 28(1): 61)
[9]	Zhao X D, Cheng Y F, Fan W, et al.Inhibitive performance of a rust converter on corrosion of mild steel[J]. J. Mater. Eng. Perform., 2014, 23(11): 4102

[1]	HAN Yuetong, ZHANG Pengchao, SHI Jiefu, LI Ting, SUN Juncai. Surface Modification of TA1 Bipolar Plate for Proton Exchange Membrane Fuel Cell[J]. 中国腐蚀与防护学报, 2021, 41(1): 125-130.
[2]	REN Yan, QIAN Yuhai, ZHANG Xintao, XU Jingjun, ZUO Jun, LI Meishuan. Effect of Thermal Shock on Mechanical Properties of Siliconized Graphite with ZrB₂-SiC-La₂O₃/SiC Coating[J]. 中国腐蚀与防护学报, 2021, 41(1): 29-35.
[3]	SHI Kunyu, WU Weijin, ZHANG Yi, WAN Yi, YU Chuanhao. Electrochemical Properties of Nb Coating on TC4 Substrate in Simulated Body Solution[J]. 中国腐蚀与防护学报, 2021, 41(1): 71-79.
[4]	LIU Yang, WU Jinyi, YAN Xiaoyu, CHAI Ke. *Effect of Bacillus flexus* on Degradation of Polyurethane Varnish Coating in Marine Environment**[J]. 中国腐蚀与防护学报, 2021, 41(1): 36-42.
[5]	YU Hongfei, SHAO Bo, ZHANG Yue, YANG Yange. Preparation and Properties of Zr-based Conversion Coating on 2A12 Al-alloy[J]. 中国腐蚀与防护学报, 2021, 41(1): 101-109.
[6]	YUE Liangliang, MA Baoji. Effect of Ultrasonic Surface Rolling Process on Corrosion Behavior of AZ31B Mg-alloy[J]. 中国腐蚀与防护学报, 2020, 40(6): 560-568.
[7]	LI Congwei, DU Shuangming, ZENG Zhilin, LIU Eryong, WANG Feihu, MA Fuliang. Effect of Current Density on Microstructure, Wear and Corrosion Resistance of Electrodeposited Ni-Co-B Coating[J]. 中国腐蚀与防护学报, 2020, 40(5): 439-447.
[8]	HU Lulu, ZHAO Xuyang, LIU Pan, WU Fangfang, ZHANG Jianqing, LENG Wenhua, CAO Fahe. Effect of AC Electric Field and Thickness of Electrolyte Film on Corrosion Behavior of A6082-T6 Al Alloy[J]. 中国腐蚀与防护学报, 2020, 40(4): 342-350.
[9]	SUN Shuo, YANG Jie, QIAN Xinzhu, CHANG Renli. Preparation and Electrochemical Corrosion Behavior of Electroless Plated Ni-Cr-P Alloy Coating[J]. 中国腐蚀与防护学报, 2020, 40(3): 273-280.
[10]	CAO Jingyi, WANG Zhiqiao, LI Liang, MENG Fandi, LIU Li, WANG Fuhui. Failure Mechanism of Organic Coating with Modified Graphene Under Simulated Deep-sea Alternating Hydrostatic Pressure[J]. 中国腐蚀与防护学报, 2020, 40(2): 139-145.
[11]	SHI Chao,SHAO Yawei,XIONG Yi,LIU Guangming,YU Yuelong,YANG Zhiguang,XU Chuanqin. Influence of Silane Coupling Agent Modified Zinc Phosphate on Anticorrosion Property of Epoxy Coating[J]. 中国腐蚀与防护学报, 2020, 40(1): 38-44.
[12]	YANG Yinchu,FU Xiuqing,LIU Lin,MA Wenke,SHEN Moqi. Electrochemical Corrosion of Ni-P-BN(h)-Al₂O₃ Composite Coating Deposited by Spray Electrodeposition[J]. 中国腐蚀与防护学报, 2020, 40(1): 57-62.
[13]	ZHAO Shuyan,TONG Xinhong,LIU Fuchun,WENG Jinyu,HAN En-Hou,LI Xiaohui,YANG Lin. Corrosion Resistance of Three Zinc-rich Epoxy Coatings[J]. 中国腐蚀与防护学报, 2019, 39(6): 563-570.
[14]	WANG Guirong,ZHENG Hongpeng,CAI Huayang,SHAO Yawei,WANG Yanqiu,MENG Guozhe,LIU Bin. Failure Process of Epoxy Coating Subjected Test of Alternating Immersion in Artificial Seawater and Dry in Air[J]. 中国腐蚀与防护学报, 2019, 39(6): 571-580.
[15]	YU Chuntang,YANG Yingfei,BAO Zebin,ZHU Shenglong. Research Progress in Preparation and Development of Excellent Bond Coats for Advanced Thermal Barrier Coatings[J]. 中国腐蚀与防护学报, 2019, 39(5): 395-403.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed