Journal of Materials Research and Technology-JMR&T
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2021
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IF 5.039
Hui Jin,Renjie Ji,Tiancong Dong,Shuo Liu,Fan Zhang,Lilong Zhao,Chi Ma,Baoping Cai,Yonghong Liu
Nickel-iron alloy is broadly utilized in the industrial field due to its fabulous mechanical properties. How to prepare nickel-iron alloy with better corrosion resistance more efficiently is an important concern. Based on this, the WC particles enhanced nickel-iron coatings were fabricated by jet electrodeposition (JED) at a high current density of 100A/dm 2 . It was found that increasing the deposition temperature appropriately during JED is beneficial to obtain Ni-Fe-WC coating with the higher number of hard particles. Specifically, the maximum WC particles proportion reaches 4.47 wt% at 55 °C. The electrochemical corrosion behavior of coating was measured by polarization curve and electrochemical impedance spectroscopy (EIS). The polarization curve test results displayed that the E corr positively shifted from −0.402 to −0.281 V and the i corr reduced from 25.13 to 7.05 μA/cm 2 with the increase of WC particles proportion. Meanwhile, the EIS test results exhibited that the impedance of coating enhanced from 12,720 to 59,140 Ω cm 2 . The neutral salt spray test (NSS) was used to simulate the corrosion of coating in a seawater environment. The NSS results showed that with the increase of WC particles, the corrosion products decreased gradually and the degree of corrosion decreased. The analysis showed that WC particles can help the grain growth and release the internal stress in the coating. Larger grain sizes reduces intergranular corrosion and smaller internal stress help to alleviate stress corrosion cracking. The above research can provide theoretical support for the efficient preparation of particle enhanced composite coating with strong corrosion resistance.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2019
·Vol. 55
·期 4
·1727-1737
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IF 3.442
Peng Guangchun,Qiao Qianqian,Jin Lei,Zhang Bowei,Wang Yi,Huang Kang,Yao Qiong,Zhang Dongjiu,Zhang Zhan,Fang Tao,Wu Junsheng,He Yedong
A novel CeO 2 /MgAl 2 O 4 composite coating, fabricated via a cathode plasma electrolytic deposition (CPED) technique followed by hydrothermal synthesis, was developed in this study to explore its potential application as corrosion protection for AZ31 magnesium alloys. The microstructure observed through scanning electron microscopy indicated that reducing the duty cycle of the power source within a reasonable range during the CPED process was beneficial to form a uniform and dense MgAl 2 O 4 coating, which served as an ideal adhesive matrix for a uniform CeO 2 coating as the outermost layer. The results of electrochemical impedance spectra and neutral salt spray tests showed that the decoration of the CeO 2 layer significantly improved the corrosion resistance of the CeO 2 /MgAl 2 O 4 composite coating compared to the single MgAl 2 O 4 coating and bare substrate. Cross-cut tests revealed that the adhesion of the MgAl 2 O 4 coating and the CeO 2 /MgAl 2 O 4 composite coating were both excellent due to the strong binding between the MgAl 2 O 4 coating and the substrate.
研究领域:
材料科学
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表面工程
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腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Yi Zhao,Meiyu Yan,Liru Jia,Fengfeng Zhang,Leiming Sun,Cijian Zhang,Chengwen Gu,Beitao Liu,Qianqian Fan,Shouhai Zhang,Xigao Jian,Zhihuan Weng
Epoxy resins play a vital role in anticorrosion coatings, however, the defects of poor flexibility and thermal stability of epoxy resin hinder their use in extreme environments and limit the wide range of applications for epoxy coatings. This study investigates the incorporation of high-performance thermoplastic poly(phthalazinone ether) resins (PPAEs) into bisphenol A epoxy resins (E-51) to develop a series of high performance anti-corrosion coatings. Due to the distinctive structure of the phthalazinone moiety, the flexibility and thermal stability of the epoxy coatings were greatly improved by the addition of PPAEs. The flexibility test result was reduced from over 7.5 mm to 5 mm, while the glass transition temperature ( T g ) of the coating was stabilised above 180 °C. In addition, inorganic fillers are added to plug defects such as pores inherent in epoxy coating systems. The coating provided more than 1,560 h of protection in the neutral salt spray test. At the same time, the coating maintained a high impedance modulus of 10 9 Ω⋅cm 2 (|Z| 0.01Hz ) after 4 weeks of immersion in electrochemical impedance tests. This study significantly enhances the comprehensive performance of epoxy coatings and provides a viable solution for the development of high performance epoxy anti-corrosion coatings, offering promising alternatives for corrosion protection in extreme service environments.
研究领域:
材料科学
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高分子科学
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表面工程
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腐蚀防护
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Yabo Chen,Jihu Wang,Shaoguo Wen,Jijia Zhang,Xiangyi Yu,Yan Mao
Rose-like sheet zinc phosphate (SZP) was prepared by the induction-calcination method using emulsified paraffin emulsion. The structure of SZP prepared under different conditions was characterized by X-ray photoelectron spectroscopy, X-ray diffractometer, Fourier transform infrared spectroscopy, and Scanning electron microscope. It was added as an anti-corrosive filler to waterborne epoxy-modified acrylic resin. The failure behavior of the coating film was studied by salt spray test and electrochemical workstation. Compared with pure resin, the best neutral salt spray resistance time increased from 24 hours to 336 hours, about 14 times. Besides, the contact angle of the film was measured with a contact angle meter. The results show that SZP can increase the contact angle of the film, improve the water-resistance of the epoxy-modified acrylic resin coating, and prolong the diffusion path of the corrosive medium to the substrate. Therefore, the rose-like sheet zinc phosphate enhances the barrier performance of the coating and can be used as an excellent corrosion inhibitor.
研究领域:
材料科学
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腐蚀与防护
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表面工程
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2025
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IF 3.9
Haiqing Liu,Muhammad Jawad,Jingmao Zhao,Baomin Fan,Mohammad Tabish,Muhammad Mubeen,Mubashar Mahmood,Jingbao Wang
Under-film filiform corrosion (FFC) poses a significant challenge to the durability and reliability of Zn–Al–Mg-coated steel (ZM-steel), necessitating the development of advanced protective strategies. Herein, benzotriazole 5-carboxylic acid (BTC)-modified titanium zirconium (TiZr) conversion coatings (CCs) were developed as a sustainable solution to mitigate FFC, enhance corrosion resistance, and improve the adhesion of epoxy (EP) coatings on ZM-steel. Through electrochemical impedance spectroscopy, potentiodynamic polarization, FFC, and neutral salt spray (NSS) tests, the optimized BTC-TiZr CC, prepared in a Ti–Zr solution containing 0.5 g/L BTC, a treatment temperature of 25 °C, and a short immersion duration of 120 s, exhibited superior corrosion resistance, robust adhesion strength, and exceptional FFC inhibition. Metal–organic complexes (MOCs) of Ti/Zr/Zn with BTC were identified alongside mixed Ti/Zr/Zn/Al/Mg oxides and fluorides within the BTC-TiZr CC. BTC not only exerted strong corrosion inhibition efficacy for ZM-steel but also facilitated the formation of MOCs with metal ions in TiZr conversion solutions (CSs). Density functional theory calculations revealed that BTC preferentially adsorbs onto the MgZn2 phase, effectively suppressing its dissolution within the ZM layer. These findings establish BTC-TiZr CCs as a promising, environmentally friendly solution for advanced corrosion protection of ZM-steel, especially FFC suppression.
研究领域:
材料科学
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腐蚀工程
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表面工程
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电化学
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涂层技术
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）