JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Yuwei Ye,Dongping Yang,Hao Chen,Shengda Guo,Qiumin Yang,Liyong Chen,Haichao Zhao,Liping Wang
Novel N-doped carbon dots (CDs) were obtained through pyrolysis of ammonium citrate at 180 °C for 1, 2 and 3 h, and their corrosion inhibition effect on Q235 steel in 1 M HCl solution were evaluated through electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (Tafel), scanning vibrating electrode technique (SVET) analysis. The changes of corrosion current density and impedance modulus of Q235 steel in inhibitor solutions showed that the as-prepared carbon dots presented a valid protective effect on steel in 1 M HCl solution. Meanwhile, the inhibition efficiency of three carbon dots exceeded 90% at 200 mg/L and the highest inhibitive efficiency was found for the carbon dots prepared at the reaction time of 2 h. The adsorption mechanism of all as-prepared carbon dots complied with the Langmuir adsorption model, containing chemical and physical adsorptions, which was also confirmed by X-ray photoelectronic spectroscopy (XPS) analysis.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
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
·
腐蚀与防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2021
·Vol. 11
·期 5
·753
·
IF 2.351
Bianli Quan,Junqi Li,Chaoyi Chen
During Bayer alumina production with high-sulfur bauxite, the sulfide ions in the sodium aluminate solution caused serious corrosion to Q235 steel, which is the material of the tank equipment. This study investigates the effect of corrosion time on Q235 steel synergistic corrosion in sodium aluminate solution using the weight-loss method and electrochemical measurements. The results indicate that the corrosion rate decreases sharply, the rate equation satisfies the mathematical model of power function at the initial stage of corrosion, and the transformation of unstable iron sulfide to stable iron oxide at the later stage results in the decrease in sulfur content in the corrosion products and surface pseudo-passivation. There are two main types of corrosion products, as follows: one is the octahedral crystal particle, which is composed of Fe2O3, Fe3O4, Al2O3and NaFeO2, and the other is the interlayer corrosion between the surface layer and the matrix, which is composed of FeS, FeS2and MnS2. At day 3, the dynamics of the Q235 steel electrode is controlled by charge transfer and ion diffusion. However, at other times the dynamics are mainly controlled by charge transfer.Keywords:Q235 steel;sulfide;corrosion time;weight loss;electrochemistry;EIS;potentiodynamic polarization curve
研究领域:
材料科学
·
腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
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
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yongning Ma,Panpan Li,Peihan Wu,Mingyuan Guo,Yuhao Yang,Xiaolong Li
In photocatalytic anticorrosion perspective, the migration rate of excited electrons from surface layers to substrate steels restricted the performance of g-C 3 N 4 due to the high resistance between interface of g-C 3 N 4 layers and adhesive layers. Herein, an S-scheme g-C 3 N 4 /polyaniline (PANI) heterojunction with face-to-face structure was established by a secondary calcining method. The as-prepared heterojunctions were applied to protect Q235 carbon steel, and the results showed that the anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction is much higher than that of g-C 3 N 4 and PANI coating layers according to salt spray test. Photocurrent intensity indicated that the optimum amounts of g-C 3 N 4 and PANI were 0.06 and 0.09 mL/cm 2 , which are benefit for the transport of excited electrons due to the optimum thickness of coating layers. Furthermore, the S-scheme g-C 3 N 4 /PANI heterojunction can promote the separation rate of charge carriers and suppress the recombination rate at the same time, which are inferred from photocurrent intensity, electrochemical impedance spectra, super-depth-of-field microscope, and photoluminescence investigation. In the last, the enhanced anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction with face-to-face structure was deduced according to mentioned characterization.
研究领域:
材料科学
·
腐蚀与防护
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Yuwei Ye,Wei Liu,Zhiyong Liu,Haichao Zhao,Liping Wang
Novel trianiline-containing sol-gel hybrid coatings were prepared by one-step electrodeposition technology on the surface of Q235 steel. The chemical component, microstructure of the as-prepared coatings were measured by FTIR, UV-vis, SEM. The effects of deposition time on the thickness, contact angle (CA) and surface roughness of coatings were investigated. The results showed that the modified silica coatings exhibited an excellent hydrophobic nature. By comparing with various deposition times (100, 300, 500, 700 s) under the deposition potential of -1.5 V, the coating under the deposition time of 500 s presented the best anti-corrosion effectiveness for bare steel substrate in 3.5 wt.% NaCl solution as verified by Tafel curves and electrochemical impedance spectroscopy (EIS).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 4
·456
·
IF 2.9
Jinye Bi,Jiansan Li,Huajie Wang,Jianming Wang,Guoqiang Lu,Jinzhen Huang,Cailing Zhao,Sawen Liu
Polyaniline (PANI) doped with hydrochloric acid and phytic acid are prepared as benzotriazole (BTA) inhibitor carriers, and their anticorrosion properties are studied on epoxy resin-coated Q235 steel. The structure and morphology of the prepared PANI materials are investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The thermal stability of PANI and its release rate of corrosion inhibitor are measured, and the test results indicate that hydrochloric acid-doped PANI can accommodate a larger amount of corrosion inhibitor. The results of contact angle and water absorption tests show that the PANI loaded with BTA can improve the hydrophobicity and reduce the water absorption of the coating. The anticorrosion performances of epoxy coatings with 0.6 wt% PANI are investigated in 3.5 wt% NaCl solution using electrochemical tests. The experimental results reveal that PANI loaded with BTA shows a good anticorrosion effect in the epoxy coating. Particularly, phytic acid-doped PANI loaded with BTA has a better inhibition efficiency (93.6%), which is superior to hydrochloric acid-doped PANI loaded with BTA (86.4%).
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Yuelong Liu,Jinyan Liu,Bo Chen,Xiaohui Ren
Corrosion of metals has significant implications for international livelihoods, and excessive pickling can lead to corrosion of Q235 steel during the production process, thus, this study investigates the corrosion inhibition performance of three betaine surfactants (SB3-n, 10, 12, 14) with different carbon chain lengths and KI compounds, on Q235 steel in 1 mol·L -1 hydrochloric acid through experimental and theoretical analyses. The results show that the optimal efficiency of SB3-n/KI can be above 90%. Corrosion inhibitors adsorb simultaneously on the metal surface, making the metal surface smooth and flat. Theoretical analysis shows that the adsorption ability of I - is higher than that of Cl - , and all three compound inhibitors adsorb on the metal surface chemically, with the adsorption energy in the order of SB3-14
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
International Journal of Electrochemical Science
·
2023
·
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
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2020
·
IF 6.155
Yuwei Ye,Zilong Jiang,Yangjun Zou,Hao Chen,Shengda Guo,Qiumin Yang,Liyong Chen
An eco-friendly and effective corrosion inhibitor (N-CDs) was acquired by hydrothermal method in methacrylic acid and ethyl(methyl)amine precursors. Afterwards, the weight loss and electrochemistry measurement were chosen to appraise the corrosion inhibition behavior of as-prepared N-CDs for Q235 steel in Cl − contained solutions. The change rules of EIS and Tafel data displayed that the as-prepared N-CDs revealed a high-efficiency protection for steel in all test environments. Meanwhile, the inhibition efficiency of steel reached up to 93.93 % (1 M HCl) and 88.96 % (3.5 wt% NaCl) at 200 mg/L of N-CDs. Furthermore, the N-CDs could form the adsorption film on steel surface to avoid the strong attack of Cl − . By analysis, the adsorption mechanism of as-prepared N-CDs on steel surface was physicochemical interaction , which strictly complied with the Langmuir adsorption model in both solutions.
研究领域:
材料科学
·
电化学
✓ 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
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 47
·e53193
·
IF 3.057
Xiuzhou Lin,Qiang Peng,Song Duan,Chunjiang Zhang,Xulei Chen,Zhiqiang Deng,Baojie Dou,Yingjun Zhang,Xiulei Gao,Zhiwen Fang
In this study, ZIF-8 modified fluorinated graphene composite (FG@ZIF-8) was innovatively prepared and used as a novel functional filler to improve the anticorrosion performance of epoxy coating on Q235 carbon steel. The morphology and structure of FG@ZIF-8 composites were characterized by scanning electron microscopy (SEM), x-ray powder diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR), and x-ray photoelectron spectroscopy (XPS) tests. The results showed that the structure and morphology of the composites largely depended on the composition ratio of FG and ZIF-8. The mechanical properties and corrosion resistance of FG@ZIF-8 modified coatings were also investigated. The unique two-dimensional sheet structure and insulation of FG in the FG@ZIF-8 filler can not only inhibit the penetration of corrosive media but also discourage electron migration effectively on the interface of coating/matrix during the electrochemical reaction. Meanwhile, the chemical cross-linking between the amine groups in ZIF-8 and the epoxy group increases the degree of densification of the coatings. Besides, the 2-methylimidazole from the dissolution of ZIF-8 on FG@ZIF-8 will also inhibit the corrosion reaction. These advantages endow the FG@ZIF-8 modified epoxy coatings an excellent long-term corrosion resistance. Our findings may inspire the development of new graphene-based materials with superior protective properties for metallic materials.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）