Polymers
·
2022
·Vol. 14
·期 7
·1412
·
IF 4.967
Kai Lyu,Xiaoyan Liu,Ruidan Liu,Heng Yang,Yang Qiao,Surendra P. Shah
In the marine service environment, metal materials have a serious risk of corrosion. The corrosion rate of metal materials will be accelerated by the dual action of temperature change and alkali salt in saline-alkali environment. In order to delay the metal materials’ corrosion rate and prolong their service life, this paper used a CeO2–GO (4:1) nanocomposite prepared by the hydrothermal synthesis method to make an anticorrosion coating. The anticorrosion performance was evaluated by stereo microscope and 3D images of the corrosion site were fitted for calculation. The state evolution of the CeO2–GO (4:1)/EP coating immerged in a simulated saline-alkali solution was studied by open circuit potential (OCP), electrochemical alternating current impedance spectroscopy (EIS), Mott–Schottky curve and Tafel curve. The results indicated that CeO2–GO (4:1) nanocomposites exhibited good resistance compared with graphene oxide and nano cerium oxide in a simulated saline-alkali environment. The research in this paper lays a firm theoretical foundation for the application of nano cerium-oxide-modified graphene oxide anticorrosive coating in saline-alkali environment engineering.Keywords:CeO2–GO;corrosion depth;saline-alkali;anticorrosion
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2021
·
IF 3.512
Bianli Quan,Junqi Li,Chaoyi Chen
This study investigates the effect of corrosion temperature on the corrosion of Q235 steel and 16Mn steel in the sodium aluminate solution using the weight loss method and electrochemical method. The results indicate that the corrosion rates of two steels show an increasing trend with the temperature and that of Q235 steel increases more than that of 16Mn steel at higher temperatures. The corrosion products have changed from four forms at 25 °C to two forms at 65 and 110 °C, namely, the octahedral particles and the bulk particles formed by the flocculent aggregation. The corrosion products are composed of FeS, FeS2, Fe2O3, Fe3O4, NaFeO2, and Al2O3. The Icorr of the two steels increases with temperature, while Rp gradually decreases. The two steels are controlled by the charge transfer at 25 and 65 °C and the charge transfer and the ion diffusion at 95 °C, indicating that the temperature changes the kinetics of the corrosion process.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 13
·2072
·
IF 4.329
Xiaoyan Liu,Ruidan Liu,Tianyu Li,Yanqi Liu,Li Liu,Kai Lyu,Surendra P. Shah
Graphene is a two-dimensional sheet of regular hexagonal honeycomb lattice formed by sp2hybrid orbital bonding, with only one layer thickness of a single atom, which is known as the “super king” of the 21st century. Previous studies have shown that cerium oxide-graphene oxide (CeO2-GO(4:1)) nanocomposites eliminated the agglomeration of graphene to some extent and the CeO2-GO(4:1) epoxy coating could be prepared with good anti-corrosion performance. In this paper, CeO2-GO(4:1) nanocomposites were prepared by the hydrothermal synthesis method, and the three-electrode method was used for electrochemical tests. The state evolution of CeO2-GO(4:1)/EP coating and the synergy between CeO2-GO(4:1)/EP and corrosion inhibitor in simulated seawater solution with different concentrations (20%, 40%, 60%) were analyzed and illustrated by Optical Microscope (OM) characterization, Open Circuit Potential (OCP), Electrochemical alternating current Impedance Spectroscopy (EIS), Mott–Schottky curve and Tafel curve. The results indicated that CeO2-GO(4:1) nanocomposites showed good corrosion resistance in a marine environment. This research lays a solid theoretical foundation for the application of cerium oxide-modified graphene oxide anticorrosive coating in marine engineering.Keywords:CeO2-GO;corrosion inhibitor;simulated seawater;corrosion area
研究领域:
材料科学
·
海洋工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2023
·Vol. 70
·期 9
·1773-1783
·
IF 1.8
Lanhe Zhang,Sen Wang,Junqi Wang,Hong Jiang,Qiang Liu,Xin Cheng,Xiaohui Xu
Objective A novel fluorescent composite anti-corrosion coating was prepared, which could simultaneously indicate corrosion sites and corrosion degree according to change of fluorescence intensity. Methods Tri-HDI/GO/SR/AP coating was prepared by blending method. Its structure, physical properties, anti-corrosion ability and fluorescence intensity were analyzed. Results Tri-HDI/GO/SR/AP coating was not significantly damaged during the corrosion simulation experiment. The fluorescence intensity of the coating decreased with the increase of corrosion degree. Conclusions Based on structure characterization and electrochemical analysis, it is found that Tri-HDI/GO/SR/AP coating has positive anti-corrosion performance. Fluorescence molecules undergo a quenching reaction when corrosion occurs, the corrosion location and corrosion degree can be determined according to the changes of luminescence intensity.
研究领域:
材料科学
·
腐蚀工程
·
涂层技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yujie Qiang,Shengtao Zhang,Liping Wang
Deoxyribonucleic acid (DNA) was investigated for suppressing copper corrosion in 0.5 M H 2 SO 4 through electrochemical measurement, microscopic surface observation, X-ray photoelectron spectroscopy (XPS) analysis and molecular dynamics (MD) simulation. Results indicate that DNA acts as an effective cathodic-type inhibitor that mainly suppresses cathodic reaction by forming anchored DNA-adsorption film. The film shows active blocking effect, obeys the Langmuir adsorption model and involves physisorption and chemisorption . The MD simulation gives the new insights at molecular level and indicates the formation of an interesting double barrier of DNA molecule on the Cu (111) surface due to its unique twist structure.
研究领域:
材料科学
·
电化学
·
表面科学
✓ 已验证
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 8
·3214
·
IF 3.4
Yafei Liu,Huixia Feng,Luyao Wang,Tiantian Yang,Jianhui Qiu
Due to the obvious numerous economic and technical consequences of the corrosion process, its inhibition is one of the most critical aspects of current research. A corrosion inhibitor for the bis-thiophene Schiff base copper–metal complex Cu(II)@Thy-2 was investigated here, which was synthesized via a coordination reaction with a bis-thiophene Schiff base (Thy-2) as a ligand and copper chloride (CuCl2-2H2O) as a ligand metal salt. When the corrosion inhibitor concentration was increased to 100 ppm, the self-corrosion current densityIcoorreached a minimum of 2.207 × 10−5A/cm2, the charge transfer resistance reached a maximum of 932.5 Ω·cm2, and the corrosion inhibition efficiency reached a maximum of 95.2%, with the corrosion inhibition efficiency showing a trend of increasing first and then decreasing with concentration increase. After adding Cu(II)@Thy-2 corrosion inhibitor, a uniformly distributed dense corrosion inhibitor adsorption film formed on the surface of the Q235 metal substrate, significantly improving the corrosion profile compared to both before and after the addition of the corrosion inhibitor. Before and after the addition of corrosion inhibitor, the metal surface’s contact angle CA increased from 54.54° to 68.37°, showing that the adsorbed corrosion inhibitor film decreased the metal surface’s hydrophilicity and increased its hydrophobicity.Keywords:anticorrosion;corrosion inhibitor;thiophene Schiff base;electrochemistry
研究领域:
材料科学
·
化工
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 11
·4295-4305
·
IF 8.1
Rong Xudong,Li Yue,Chen Xiaofeng,Zhang Xiang,Zhao Dongdong,He Chunnian,Zhao Naiqin
Incorporating reinforcements can improve the mechanical properties of Al matrix composites but make them susceptible to corrosion attacks by facilitating the formation of a galvanic cell network along the interface. The optimization of the interfacial structure improves the corrosion resistance of the composites. Herein, a solid-state thermite reaction integrated with a heat treatment strategy was developed to create plain interfaces, encompassing the grain boundary (GB) and reinforcement–matrix interface, in an Al–CuO composite system. The intergranular corrosion behavior and susceptibility to stress corrosion cracking of the composite were comprehensively examined by immersion/electrochemical corrosion tests and microstructural characterizations. The intragranular distribution of nanosized secondary phases, i.e., Al 2 O 3 and precipitates, was investigated to address their contribution to the continuous galvanic cell detachment along the GBs and interruption of the corrosion path, thus boosting the corrosion duration. In addition, the tightly bonded Al 2 O 3 –Al interface with low strain energy distinctly lowers local susceptibility to corrosion. This study illuminates the correlation between interface characteristics and corrosion mechanisms in the composites, which can shed light on the development of high-corrosion-resistant composites.
研究领域:
材料科学
·
腐蚀工程
·
复合材料
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Tao Zhu,Yuan Yuan,Qi Yu,Huiying Xiang,Xu Dai,Guoyong Liu,Ruijin Liao
The overhead aluminum conductors are prone to corrosion, especially in areas with marine climates, which interferes with the safe operation of the power system. Herein, slippery liquid infused porous surface (SLIPS) conductors were successfully prepared on pure aluminum (Bare) conductors by anodizing and infusion of silicone oil. The corrosion resistance of the conductors during 30 days of salt spray corrosion and 7 days of energized conditions was studied. The results indicated that the corrosion of the Bare and anodic aluminum oxide (AAO) conductors was more severe under energized (alternating current (AC) and direct current (DC)) conditions. The exacerbation of corrosion by DC energization was remarkably higher than that of AC energization. The AAO conductor showed better corrosion resistance than the Bare conductor, which was attributed to the porous alumina retarding the medium intrusion. Due to the barrier effect provided by the lubricant layer, the SLIPS conductor always presented excellent corrosion resistance than the Bare and AAO conductors. In addition, the mechanical and electrical properties of the SLIPS conductor were comparable to the Bare conductor and could satisfy the basic requirements for practical applications. The prepared SLIPS conductors offer great application prospects for the corrosion protection of aluminum conductors.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2021
·
IF 7.205
Jian Zhang,Jin Huang,Ruxia Liu,Guoqiang Luo,Qiang Shen
Immersion tests of AlN in LiF-LiCl-LiBr-Li salt have been performed at 500 °C to study the corrosion behaviour of AlN. The results show that AlN initially corroded at a higher rate (2⋅10 −5 mg/(mm 2 ⋅h)) during 0−50 h than during 50−300 h (6⋅10 -6 mg/(mm 2 ⋅h)) because the formation of an alumina corrosion layer protected the AlN from further corrosion. The addition of metallic Li at low concentrations (<0.1 wt. %) to the molten salt inhibited the corrosion of AlN by preferentially depleting oxygen impurities, while Li at high concentrations (>0.1 wt. %) accelerated corrosion by reacting with YAG in AlN.
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
CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
Yu Hui,Sumei Zhao,Jiaying Xu,Binglin Zou,Ying Wang,Xiaolong Cai,Ling Zhu,Xueqiang Cao
Degradation due to molten salt attack is one of the failure mechanisms of thermal barrier coatings . Thermochemical attack of the salt mixture Na 2 SO 4 –30 mol% NaVO 3 on ZrO 2 –8 mol% YO 1.5 (8YSZ) at 1100 °C for different times was investigated. In the present study, 8YSZ powder was synthesized using co-precipitation route. The graded morphologies and phase compositions were examined using SEM, XRD and Raman before and after hot corrosion test. The results obtained from XRD have shown that m-ZrO 2 and YVO 4 were the main corrosion products after hot corrosion test at 1100 °C. The results obtained from SEM and EDS observations have shown that large polyhedron crystals of m-ZrO 2 and rod-like crystals of YVO 4 formed as hot corrosion products after hot corrosion test for 6 h and 24 h. The phase transformation and chemical interaction are the primary corrosion mechanisms for degradation of 8YSZ ceramic.
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
Crystals
·
2023
·Vol. 13
·期 3
·506
·
IF 2.7
Chenxu Li,Yuming Zhao,Jinhui Liu,Jilei Xu,Dong Guo,Huanghua Zhang,Xianghong Zhou,Peixu Yang,Shaojun Zhang
The corrosion behavior and corrosion resistance of WE43 and AZ80 immersed in NaCl and Na2SO4solutions were investigated, respectively. Two alloys were immersed in 0.6 M NaCl and Na2SO4solution to observe the corrosion morphologies. Hydrogen evolution and weight loss experiments were conducted to obtain the corrosion rates. Electrochemical tests were used to characterized detailed corrosion situation. The results show that, when immersed in Na2SO4solution, WE43 alloy shows a unique micro-galvanic corrosion behavior. On the other hand, the corrosion rate of WE43 in Na2SO4solution is much faster than that in NaCl solution, which is the direct opposite of AZ80 and most magnesium alloys. The protection of the surface film maybe the key factor to the unexpected phenomena.Keywords:magnesium alloys;rare earth elements;micro-galvanic corrosion;surface film;corrosion resistance
研究领域:
材料科学
·
腐蚀工程
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 45
·2203852
·
IF 15.153
Baoshan Zhang,Shuo Liu,Shaojie Zhang,Yu Cao,Huili Wang,Chengyu Han,Jie Sun
Sustainable production of hydrogen from seawater electrolysis has attracted much attention in recent years. Considering that Cl - might corrode metal substrate by crossing through the covered catalyst, the conventional Ni(II)Fe(III)-layered double hydroxide (NiFe-LDH) loaded on metal substrate, as a favorable oxygen evolution catalyst, cannot be directly used for seawater electrolysis. Herein, an anti-corrosion strategy of PO 4 3- intercalation in NiFe-LDH is proposed, in which the highly negatively charged PO 4 3- in the interlayers can prevent the Ni substrate from Cl - corrosion by electrostatic repulsion. In order to verify the anti-corrosion effect, the two electrodes of the pristine NiFe-LDH and the PO 4 3- intercalated NiFe-LDH are evaluated in a solution with high Cl - concentration. PO 4 3- can effectively hinder the migration of Cl - between the interlayers of NiFe-LDH, thus the corrosion life of the PO 4 3- intercalated NiFe-LDH is more than 100 times longer than that of the pristine NiFe-LDH. The improvement of stability is attributed to the inhibition effect of Cl - passing through the interlayers of NiFe-LDH, leading to the protection of Ni substrate. This work provides a design strategy for the catalysts loaded on the metal substrate, which has excellent Cl - -corrosion resistance and can be widely used in hydrogen generation from seawater electrolysis.
研究领域:
材料科学
·
电化学
✓ 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）