International Journal of Electrochemical Science
·
2023
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IF 1.5
Yong Lu,Huixia Feng
Synergistic effect of rare earth salts conversion coating with phytic acid conversion coating was studied. Rare-earth salts were used as post-treatment to modify the phytic acid coated steel. The corrosion resistance properties of different coatings was investigated with electrochemical impedance spectroscopy in 3.5 wt.% NaCl solution. The corrosion resistance of phytic acid coated steel on steel was further enhanced with cerium nitrate post-treatment. The corrosion rate of phytic acid coated steel was seriously impaired by cerium nitrate post-treatment. But scanning electron microscopy (SEM) images indicated that there are also some micro-cracks on the coating surface when phytic acid coated steel was post-treated with cerium nitrate conversion bath. X-ray photoelectron spectroscopy (XPS) results demonstrated that the phytic acid could bind to the steel surface through the formation of -P-O-Fe and the cerium salts on the steel surface existed in the forms of both Ce 3+ and Ce 4+ .
研究领域:
材料科学
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腐蚀与防护
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Hanlin Shao,Ruth Caroline Etroubeka,Zhihao Chen,Duanzhi Li,Xiaoshuang Yin,Hui Xu,Ying Liu,Yan Zhang,Wenzhong Yang
In this work, silicon dots (SiDs) were synthesized and surface-engineered by introducing Gum Arabic (GA), which were utilized as novel non-metallic quantum dots corrosion inhibitors for Q235 carbon steel in HCl solution. A comparative analysis was conducted on the synthesis, characterization, and inhibition performance, confirming the surface engineering can enhance their anticorrosion ability while maintaining the excitation and emission properties. Weight loss tests confirmed a corrosion rate decrease from 8.38 g·m –2 ·h –1 (blank) to 0.53 g·m –2 ·h –1 (100 mg/L GA-SiDs), achieving 93.68 % inhibition efficiency. Electrochemical tests revealed a polarization resistance of 1013 Ω cm 2 for GA-SiDs, significantly higher than the blank (54.88 Ω cm 2 ), while polarization curves confirmed mixed-type inhibition with a corrosion current density reduction to 1.48 × 10 –4 A·cm –2 . Thermodynamic and surface/interface analysis demonstrated the inhibition mechanism: physical adsorption interaction, chemisorption coordination, and hydrophobic film formation. This work provides a sustainable strategy for designing non-metallic quantum dot inhibitors, combining high performance, cost-effectiveness, and environmental compatibility.
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
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 33
·16025-16047
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IF 4.682
Wang Jia,Liu Jinyan,Liu Qian,Chong Yao
The corrosion inhibition behaviors of dodecylpyridinium chloride (DPC), hexadecylpyridinium chloride monohydrate (HDPC), and the rosin amino acid surfactants dehydroabietic acylamino sodium (6-DAS) and compounds (6-DAS/DPC and 6-DAS/HDPC) were investigated by weight loss measurements and electrochemical testing. Besides, corrosion inhibition performance was further verified by combining a series of surface properties analyses and theoretical calculations. The weight loss results showed that the increase in inhibition efficiency was mainly attributed to its high concentration and revealed that the inhibition efficiency of compound inhibitors was higher than that of single inhibitor 6-DAS (92.23%), which was up to 95.86% and 96.72% of 6-DAS/DPC and 6-DAS/HDPC at 1:8 concentration ratio, respectively. The potential polarization curve potential demonstrated that single inhibitor 6-DAS and compound inhibitors (6-DAS/DPC and 6-DAS/HDPC) were both mixed-type corrosion inhibitors dominated by the anode. Thus, among the three, 6-DAS/HDPC had the best corrosion inhibition performance, and the average inhibition efficiency was 96.90%. Surface studies presented the adsorption of inhibitor molecules adhered on the Fe surface, while the adsorption performance of compound inhibitors appeared to be superior to single inhibitor 6-DAS. Moreover, it was found that there were a few excellent data from molecular dynamics simulation about the adsorption energies of inhibitors that could also explain the corrosion inhibitor performance, the results of which had good agreement with the experimental data, which provided strong evidence for the close relationship between the molecular structure of inhibitor and its inhibition efficiency. Graphical abstract
研究领域:
材料科学
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电化学
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理论计算
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Yuwei Ye,Yangjun Zou,Zilong Jiang,Qiumin Yang,Liyong Chen,Shengda Guo,Hao Chen
N doped carbon dots (N-CDs) were prepared by hydrothermal method in methacrylic acid and n -butylamine precursors. The inhibition behavior of N-CDs on Q235 steel in hydrochloric acid environment was discussed via weight loss test, surface characterizations and electrochemistry measurements. Results showed that the as-prepared N-CDs could effectively protect Q235 steel and the inhibition efficiency reached up to 94.96% at 200 mg/L of N-CDs. In the meantime, the impedance modulus was greatly enhanced and the corrosion current density was reduced by one order of magnitude after the addition of N-CDs. Moreover, it could adhere to the steel surface by diffusion and agglomeration effect, resulting in the formation of adsorption film on steel surface. The adsorption mechanism of N-CDs almost complied with the Langmuir adsorption model, containing chemical and physical adsorptions.
研究领域:
材料科学
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腐蚀与防护
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电化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shuyu Xie,Jihui Wang,Wenbin Hu
ZnAl-MoO 4 -LDHs film was fabricated in situ on the Q235 steel substrate by aluminizing process, coprecipitation method and ion-exchange method. The morphology, composition and structure of the LDHs film were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The anticorrosion capability of the Q235 steel with LDHs film was observed by electrochemical impedance spectroscopy (EIS) and polarization curve. The LDHs film had a plate-like morphology which is the typical grain morphology of LDHs, and a particle size ranging from 2 pm to 4 pm and a particle thickness ranging from 0.05 pm to 0.2 pm. The increase of the layer spacing of LDHs film and the absorption peak of MoO 4 2- in FT-IR spectra can prove the intercalation of MoO 4 2- . Compared with bare Q235 steel, the corrosion current density of the Q235 steel with LDHs film decreased and the polarization resistance increased. The improvement of corrosion resistance is owed to the LDHs film which plays as a barrier between the substrate and the corrosive medium. The exchangeability of the interlayered anions of LDHs can catch the corrosive chloride ion in the medium and the MoO 4 2- released from the LDHs layer can play as corrosion inhibitor.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2017
·
IF 2.589
Xiang Gao,Weihua Li,Ru Yan,Huiwen Tian,Houyi Ma
Phytic acid conversion coating and Zn 2 + doped phytic acid conversion coating were fabricated on Q235 steels by immersing the steel samples in corresponding coating bath for 600 s. The changes of coating formation process and adsorption action of phytic acid on steel surface due to addition of Zn 2 + in coating bath were investigated. Scanning electron microscopy images exhibited that phytic acid conversion coating was porous network structure consisting of needle-like crystals, but Zn 2 + doped phytic acid conversion coating was one uniform layer except some fine cracks. Energy dispersive spectroscopic, X-ray diffraction and X-ray photoelectron spectroscopic characterizations demonstrated that the roles of Zn 2 + during the coating formation process could conclude to two sides: (i) Zn 2 + could promote the adsorption reaction of phytic acid to form one thicker phytic acid conversion coating on steel surface; (ii) a part of Zn 2 + could form ZnO and aggregation of the complex of phytic acid, Zn and Fe and doped to the formed conversion coatings. And the electrochemical measurements results showed that the corrosion protection efficiency of Zn 2 + doped phytic acid conversion coating was higher than that of phytic acid conversion coating.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Xianliang Li,Bin Gong,Yijie Jin,Zhihao Chen,Wenzhong Yang
In this study, we present a facile strategy to construct a smart PN-Zn-MOF-74 nanocontainer-based coating with outstanding triple functions including the barrier effect, as well as self-healing and self-reporting features. Flattened 2D PN-Zn-MOF-74 nanocontainers were synthesized by decorating the hexagonal boron nitride (h-BN) sheets with a polydopamine (PDA) layer, which was employed to interlink the Zn-MOF-74 nanodevices. The composite nanocontainers were then uniformly dispersed in a waterborne epoxy coating (WEC) and coated onto Q235 mild steel surfaces. Thus, as the Fe 3+ and H + ions were gradually released from the localized corrosion sites, the encapsulated active inhibitors (Zn 2+ and PDA) in PN-Zn-MOF-74 were exchanged and released promptly to form a robust protective film, coating the micro-damaged sites. The EIS results indicated that PN-Zn-MOF-74 with two inhibitors demonstrated a remarkable active corrosion protection performance, with the |Z| 0.01Hz value increasing from 381 Ω cm 2 (blank) to 1389 Ω cm 2 (PN-Zn-MOF-74). However, the cation exchange between Fe 3+ and Zn 2+ can collapse the fluorescent Zn-MOF-74 and form a weak fluorescent compound at the damage sites, achieving the self-reporting ability of the coating. In addition, the coating adhesion test and cross-sectional images showed that the presence of PN-Zn-MOF-74 can effectively strengthen the impermeability of the composite coating, guaranteeing its long-lasting barrier properties. The coating demonstrated a higher |Z| 0.01Hz value (4.91 × 10 9 Ω cm 2 ) despite following 504-h immersion tests, which was over 2 orders of magnitude higher than that of the blank WEC coating. This study provides a simplified and feasible method for augmenting the dependability, practicality, and versatility of anti-corrosion polymer coatings.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Liang Pan,Guoxi Li,Zhaoyang Wang,Dongbao Liu,Weikang Zhu,Chunyi Tong,Rilong Zhu,Shilin Hu
To reduce the corrosion of Q235 steel, environment-friendly and efficient N-doped carbon dots (N-CDs) were synthesized using 4-amino salicylic acid (4-ASA) and l-histidine (l-His) as precursors. The corrosion inhibition behavior of N-CDs for Q235 steel in 1 M HCl solution was systematically investigated using a weight-loss experiment, an electrochemical test, and corrosion morphology. Results showed that N-CDs could effectively inhibit the corrosion of Q235 steel, and the inhibitory efficiency reached 93% at 50 mg L–1. Quantum chemistry and molecular dynamics were used to study the inhibition mechanism of N-CDs. The results demonstrated that N-CDs exhibited a strong adsorption force on metal and the adsorption process followed the Langmuir adsorption isotherm, indicating physical/chemical mixed adsorption.
研究领域:
材料科学
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环境科学
·
电化学
✓ 已验证
DOI
高影响因子
Results in Chemistry
·
2025
·
IF 4.2
Chengjia Bao,Weijian Qi,Zhuanjun Zhu,Ting Xu,Long Zhao,Yanhong Ma,Yang Liu,Bowen Yang,Xueru Luo,Hui Yun,Xiaojuan Li
Chitosan (Chi), curcumin (Cur) and geraniol (Ger) are natural compounds, which can potentially serve as green corrosion inhibitors. Herein, the corrosion inhibition efficiency (IE) of them was compared. The corrosion rate of 1.5 mM Chi on the 1 st d was 0.78 ± 0.41 g/ (m 2 h), significantly lower than that of the control group (CK) (2.59 ± 0.32 g/ (m 2 h)), while the corrosion rate of 2 mM Cur decreased by 8.48–18.71 times. The corrosion IE of 1.5 mM Ger remained above 60 % for over 15 days. To improve corrosion IE on Q235 steel in acidic solution, two-component and three-component compounds of them at their optimal IE concentrations were also tested and evaluated by weight loss and electrochemical analysis. Chi+Cur + Ger exhibited the minimum growth rate of corrosion rate (0.19–15.36 g/ (m 2 h)) and the maximum corrosion IE (81.87–96.41 %) during 20 days. The weight loss was 20.65 % of the control on the 20th day. The Tafel results indicated Chi+Cur + Ger functioned as a mixed-type corrosion inhibitor, inhibiting the cathodic reaction more significantly. The surface observation and X-ray photoelectron spectroscopy (XPS) proved the formation of an adsorption layer on the steel surface. Chi and Cur could adsorb on the steel surface through chemical interaction like by amine and/or hydroxyl groups, while Ger through physical adsorption. The synergistic anticorrosion layer not only prevented steel surface from corrosive solution attack, but also increased the resistance to retard the charge transfer in the solution. The results might shed new insight in the application of green complex for steel corrosion inhibition.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Y.W. Liu,Y. Chen,X.H. Chen,Z.N. Yang,Y. Xie,Z. Zhang
The inhibition effect of ketoconazole (KCZ) on Q235 mild steel corrosion in 1.0 M HCl solution was studied using weight loss, electrochemical impedance spectroscopy (EIS), electrochemical noise (EN), scanning electron microscope (SEM) and energy dispersive X-ray detector (EDX). Results reveal that the inhibition efficiency increases with increasing the KCZ inhibitor concentration and the adsorption behavior of ketoconazole onto Q235 mild steel follows the Langmuir adsorption isotherm with negative value of Δ G a d s 0 , suggesting a spontaneous adsorption process . It is also found that the type of adsorption of KCZ on the mild steel surface belongs to chemisorption . New parameter of corrosion active energy C AE proposed from EN measurements which representing the electrode reaction speed exhibited the same variation trend with the corrosion rate.
研究领域:
材料科学
·
电化学
·
腐蚀科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Li Lao,Kuo Liu,Li Ren,Jinhong Yu,Jingzhen Cheng,Yuqi Li,Shaorong Lu
Developing waterborne epoxy (WEP) coatings with excellent corrosion resistance and tribological properties is a key aspect to solve the damage of Q235 steel. In this work, perylene bisimide (PBI) derivatives dispersion graphene (GR) were prepared by a π–π stacking, the highly orientated PBI0.5%/GR0.5%/WEP coating will be prepared by the rotating coating method. Especially, the impedance value reached about 109 Ω·cm2 when the PBI and GR ratio is 1:1. The impedance value of PBI0.5%/GR0.5%/WEP coating increased by 3 orders of magnitude compared with that of pure WEP coating (106 Ω·cm2). Additionally, the coefficient of friction of the coatings was 0.33; compared with that of WEP, the coefficient of friction decreased by 48%, and the wear resistance increased by 87.6%. The results show that the PBI0.5%/GR0.5%/WEP coatings exhibited excellent corrosion resistance and wear resistance properties due to the good dispersion and high orientation of PBI/GR in WEP. It is anticipated that our current work would guide the ongoing efforts to develop a more efficient method to overcome the poor dispersion of GR in waterborne epoxy resin and provide a green coating with excellent corrosion resistance and wear resistance properties.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2017
·
IF 2.962
Ee Li,Jiajia Wu,Dun Zhang,Yan Sun,Juna Chen
D-phenylalanine (D-Phe) was tested for its effect on the corrosion of Q235 carbon steel caused by Desulfovibrio sp. which belongs to sulfate reducing bacteria (SRB). Weight loss results indicated that the corrosion rate of Q235 coupons exposed to D-Phe was reduced. Much less pits were found on the surface of these coupons. It was found that pH and dissolved oxygen content of bacteria cultures as well as the growth of bacteria were not affected by D-Phe. However, the cell shape of D . sp. was changed to a more filamentous or spherical shape by treatment with D-Phe, and the structure of biofilms formed by bacteria with transformed shapes was looser and thinner. Moreover, the hydrogen sulfide production of D . sp. was inhibited by D-Phe. These results suggest that D-Phe may inhibit the corrosion process through two ways, i, D-Phe alters the bacteria shape, which inhibits the formation of biofilm and changes the structure of it consequently; ii, D-Phe reduces the production of hydrogen sulfide .
研究领域:
微生物腐蚀
·
材料科学
·
环境微生物学
·
金属腐蚀与防护
·
生物膜研究
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）