International Journal of Electrochemical Science
·
2023
·Vol. 14
·期 1
·75-90
·
IF 1.5
Bilan Lin,Yuye Xu
To improve the corrosion resistance of fine-grain high-strength (FGHS) reinforcement, molybdate was investigated as a inhibitor. The influence of molybdate on the corrosion behavior of FGHS reinforcement in simulated concrete pore (SCP) solutions containing 1.0% or 3.5% NaCl was evaluated using polarization, electrochemical impedance spectroscopy, and Mott-Schottky curves. The corrosion products were analyzed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The results revealed that upon increasing the molybdate content, the corrosion current density ( i corr ) and donor density initially rapidly decreased and then slightly increased, while the corrosion protection efficiency and impedance first rapidly increased and then slightly decreased. The optimum molybdate was 1.0 g/L. The i corr of the former (0.058 μA cm -2 ) was considerably less than that of the latter (0.250 μA cm -2 ). The Mott-Schottky curves for the former were continuous, whereas some of those for the latter were discontinuous owing to the depletion of a less Fe 3+ in the corrosion product. Almost no pits on the reinforcement were observed for the former, whereas a few pits were still observed for the latter. Molybdate exhibited good corrosion inhibition of FGHS reinforcement at low chloride concentrations, although other or composite inhibitors should be considered for high chloride concentrations.
研究领域:
材料科学
·
腐蚀工程
·
土木工程
·
电化学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 11
·期 7
·6256-6265
·
IF 1.5
Jiheng Ding,Lin Gu,Wei Dong,Haibin Yu
The epoxidation modification of renewable lignin was achieved by using epichlorohydrin under alkaline condition. Modified lignin (ELG) was characterized by FTIR and used to improve the corrosion performance of epoxy coatings. SEM images showed that ELG was well-dispersed in epoxy coatings, indicating that good compatibility of modified lignin with the epoxy resin. The anticorrosive properties of ELG/epoxy coatings coated on Q235 steel in 3.5% NaCl solution were studied by polarization curves and electrochemical impedance spectroscopy (EIS). Compared with pure epoxy coating, the addition of ELG greatly improved the corrosion protection performance of Q235 steel. Especially, the epoxy coating with 2% ELG achieves high corrosion protection performance.
研究领域:
材料科学
·
腐蚀工程
·
聚合物涂层
·
绿色化学
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Tao Zhu,Yuan Yuan,Qi Yu,Huiying Xiang,Guoyong Liu,Xu Dai,Ruijin Liao
Transmission aluminum conductors in coastal areas are highly susceptible to corrosion by salt and acidic solutions, which leads to a decrease in the mechanical strength of the transmission conductors and even causes serious accidents of fracture. Traditional anti-corrosion methods have problems such as huge costs and low efficiency, and superhydrophobic coatings based on the lotus effect show poor durability. Herein, slippery liquid infused porous surface (SLIPS) for enhanced corrosion resistance was successfully prepared on 1060 pure aluminum (Bare) using anodizing combined with dimethyl silicone oil impregnation. The corrosion tendency and long-term corrosion resistance of SLIPS in simulated marine atmosphere were investigated. SLIPS exhibited the lowest corrosion tendency than Bare and anodic aluminum oxide (AAO). The corrosion current of Bare (7.85 × 10 −7 A/cm 2 ) was remarkably decreased by SLIPS to only 1.85 × 10 −10 A/cm 2 . SLIPS showed excellent corrosion resistance in 14-day salt spray corrosion and 30-day simulated seawater immersion. After prolonged corrosion, SLIPS still displayed very low corrosion current and extremely high lubricant layer resistance. The corrosion weight gain of SLIPS was reduced by one order of magnitude than Bare. Under the synergistic effect of the aluminum oxide layer and lubricant, SLIPS presented certain self-healing performance and could maintain good anti-corrosion performance for a long time.
研究领域:
材料科学
·
腐蚀工程
·
表面化学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Zhihao Chen,Guohui Zhang,Wenzhong Yang,Bin Xu,Yun Chen,Xiaoshuang Yin,Ying Liu
The improvement in the long-term corrosion resistance of conducting polymer coatings was essential for protecting metal bipolar plate in proton exchange membrane fuel cell (PEMFC). In this study, carbon powders were functionalized with polydopamine (PDA) to create a more negative charge surface and their morphologies were examined by TEM test. Then, polypyrrole (PPy) coating was successfully electropolymerized on 304 stainless steel (304SS) in the presence of carbon powders (C and C-PDA powders). Therefore, the conducting property of PPy coating could be restored by incorporating carbon powders when the coating suffered aggressive attack. The structure, morphology and thermal-stability properties of the synthesized PPy, PPy/C and PPy/C-PDA coatings were investigated using SEM, AFM, FTIR and TG analysis. The anti-corrosion performances were also investigated in a simulated PEMFC working environment (0.1 M H 2 SO 4 solution). Electrochemical tests and immersion tests showed that PPy/C-PDA coating exhibited superior long-term corrosion resistance during 720 h of immersion and the pitting phenomenon of 304SS was evidently avoided. The PPy/C-PDA coating served as a superior physical barrier and provided excellent anodic protection effect and adhesion strength, with a low interfacial contact resistance.
研究领域:
材料科学
·
腐蚀工程
·
能源材料
·
电化学
·
聚合物涂层
✓ 已验证
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 32
·20492-20498
·
IF 4.036
Dan Yu,Yongqiang Tan
The evolution of the oxidation behaviors of the highly oxidation-resistant (Ti0.8Nb0.2)C was investigated in a 1000–1200 °C steam environment. For the specimen oxidized below 1200 °C, a compact oxide layer less than 7 μm thick was obtained. By increasing the temperature to 1200 °C, the oxide layer grows quickly to over 30 μm. Variable distribution of Ti and Nb in the oxide scales reveals the significance of the outward diffusion of the metal elements during oxidation. Synchronized variations in Ti and Nb were observed in the specimen oxidized below 1200 °C, while the distribution trends of Ti and Nb were opposite in the specimen oxidized at 1200 °C. The incorporation of Nb effectively lowered the diffusion rate of Ti through the oxide scales and the grain growth of the oxides. Suppressed diffusion and dense oxide scales are responsible for the excellent oxidation resistance of (Ti0.8Nb0.2)C below 1200 °C.
研究领域:
材料科学
·
腐蚀工程
·
高温材料
✓ 已验证
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2019
·Vol. 9
·期 1
·404-412
·
IF 3.327
Zhiqiang Li,Hongwei Ni,Zhong Chen,Junjie Ni,Rongsheng Chen,Xi’an Fan,Yang Li,Yibo Yuan
Graphene (Gr) can significantly improve the mechanical properties of metal matrix materials. However, the reinforcing effect of Gr on stainless steel (SS) has rarely been investigated due to the difficulty in its uniform dispersion. In this study, 316L stainless steel was reinforced with copper-coated graphene (Gr-Cu/SS) through molecular level mixing, ball milling, and spark plasma sintering (SPS). The tensile strength and yield strength of Gr-Cu/SS have increased by 74.0% and 65.5%, respectively, with 0.2 wt% graphene added. The improvement on the tensile strength and yield strength of Gr-Cu/SS is attributed to the effective load transfer and the increase of relative density due to the addition of graphene. Moreover, the corrosion resistance of Gr-Cu/SS was improved, attributed to the low cathodic overvoltage of copper and the prevention of ionic transfer between stainless steel grains by graphene.
研究领域:
材料科学
·
冶金学
·
纳米复合材料
·
腐蚀工程
·
机械工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 5
·期 4
·1756-1768
·
IF 8.262
Ting Wang,LingHua Tan,ChenDi Ding,MingDong Wang,JianHua Xu,JiaJun Fu
Redox-triggered smart nanocontainers, RTSNs 1, assembled by installing supramolecular switches onto the exterior surface of mesoporous silica nanoparticles, were successfully synthesized. The reversible transition upon redox stimuli from self-complexation to self-dissociation of supramolecular switches, which are in the form of β-cyclodextrin monofunctionalized with a ferrocene moiety, realizes switch behavior and regulates the release of p-coumaric acid (CA) encapsulated in mesoporous silica nanoparticles. Based on these facts, a bi-layered nanocomposite coating was designed and coated on the surface of AA2024 by successive deposition of a Ce(IV)-doped ZrO2–SiO2 sol–gel coating and an RTSNs 1 incorporated ZrO2–SiO2 coating. The bi-layered nanocomposite coating shows high barrier performance, effectively delaying the corrosion process occurring on the metallic surface in 0.5 M NaCl solution for 20 days. Once the bi-layered nanocomposite coating suffers local damage, Ce(IV) salt meets with RTSNs 1 in the scratched area and thus open the supramolecular switches, resulting in the release of the organic corrosion inhibitors, CA molecules. In the meantime, Ce(IV) salt is reduced to the inorganic corrosion inhibitor, Ce(III) salt. The combination of CA and Ce(III) produces a synergistic inhibition effect, which rapidly repairs the damaged surface and provides durable self-healing functionality.
研究领域:
材料科学
·
腐蚀工程
·
纳米技术
·
智能涂层
·
自修复材料
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 15
·期 7
·6478-6487
·
IF 1.5
Fan Qin,Li Jiang,Pengming Long,Shuting Xu,Yujia Ling,Yundan Yu,Guoying Wei
The silanization of metal surface is a new and environmental anti-corrosion technology. SiO 2 film has been prepared on copper by an electrochemically-assisted deposition technology using tetraethoxysilane as a silane reagent in this research. The effect of deposition potential on structure and performance of SiO 2 film were also studied. The results indicate that SiO 2 is the main component of the deposited films. As the deposition potential changes from -1.0V to -1.5V, the value of SiO 2 content, film deposition rate and film thickness all increase first and then decrease. When the deposition potential is -1.4V, the deposition rate of SiO 2 film is the fastest (1.13×10 -5 g·cm -2 ·s -1 ) and this film is also the thickest (69.1 μm). Moreover, the prepared SiO 2 film has obvious barrier property and can improve the corrosion resistance of the Cu substrate.
研究领域:
材料科学
·
腐蚀工程
·
电化学
·
表面涂层
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2019
·
IF 0
Wanfeng Li,Yi Wang,Xiaoyu Yang,Faqian Liu,Weihua Li
A multilayer homojunction structure of carbon nitride material is successfully realized by a strategy of rapid recrystallization. The evolution of homojunction structures is systematically investigated by SEM, XPS, nitrogen adsorption/desorption measurement, and photoluminescence characterization. The photoelectrochemical cathodic protection performance of graphitic carbon nitride for carbon steel is explored. The results show that the electric field built-in homojunction structure effectively improves the separation efficiency of photoinduced electrons and holes. The photoelectrochemical cathodic protection voltage of homojunction carbon nitride to carbon steel reaches 122 mV, which is 6 times that of bulk material (20 mV). Furthermore, this material exhibits excellent stability and provides as long as at least 3 h protection for carbon steel.
研究领域:
材料科学
·
光电化学
·
腐蚀工程
✓ 已验证
DOI
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Haowei Huang,Menglan Li,Yuqin Tian,Yuhui Xie,Xinxin Sheng,Xiang Jiang,Xinya Zhang
Having high aspect ratio and excellent gas barrier property, two dimensional α-zirconium phosphate nanosheets (α-ZrP) are one of the promising anticorrosive nanofillers. In this work, under mild conditions, layered α-ZrP were effectively exfoliated by Tris buffer solution and functionalized by situ polymerization of polydopamine (PDA) in one pot. And then the functionalized α-ZrP (f-ZrP) were introduced into waterborne epoxy (WEP) coatings that were applied on the mild steel for electrochemical corrosion tests. Results of TEM, XRD and AFM reveal that α-ZrP are successfully exfoliated with an interlayer space of 1.72 nm and a thickness of 0.78 nm. Characterizations of FTIR spectra, TEM image and EDS mapping confirm that α-ZrP are decorated by PDA. With PDA decoration, f-ZrP gain a better compatibility with WEP than pristine α-ZrP do, leading to a homogeneous distribution in the polymer matrix. And the exfoliation by Tris buffer provides f-ZrP with high aspect ratio, which is beneficial for f-ZrP/WEP to fight against the permeation of corrosive mediums. Therefore, after 15-day immersion in 3.5 wt% NaCl solution, the f-ZrP/WEP composite coatings show high value of |Z 0.01Hz | (1.90 × 10 7 Ω·cm 2 ), which is about one order of magnitude over that of blank WEP coatings (2.33 × 10 6 Ω·cm 2 ).
研究领域:
材料科学
·
腐蚀工程
·
纳米复合材料
·
聚合物涂层
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2020
·
IF 4.419
Zhaocai Zhang,Yu Zhu,Hengjing Ba
An environmental and cost-effective surfactant, polyoxyethylene lauryl ether with different numbers of ethylene oxide groups, was investigated as a corrosion inhibitor for carbon steel in artificial seawater by combining experimental and theoretical methods. All the anticorrosion experimental results from different techniques were in good agreement, which showed that polyoxyethylene lauryl ethers have outstanding anticorrosion properties for steel in seawater and that their performance improves with increasing ethylene oxide. SEM-EDS and FTIR spectroscopy confirmed that the inhibition behaviour arose from the formation of an adsorbed layer on the steel surface that repelled chloride corrosion. The Monte Carlo simulation and quantum calculation results further clarified the effect of ethylene oxide groups on the inhibition mechanism.
研究领域:
材料科学
·
腐蚀工程
·
环境化学
·
表面科学
·
理论化学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 11
·期 11
·9175-9191
·
IF 1.5
Zhe Zhang,Xiaodong Huang,Ningchen Tian,Fusong Ni,Le Ruan,Yuzeng Lv,Ling Wu
The histidine and its derivatives self-assembled (SA) films were prepared on the 304 stainless steel (SS) surface. EIS and potentiodynamic polarization curves measurements proved that these SA films could effectively protect SS against corrosion in 3.5% NaCl solution, with a maximal protection efficiency of 94.24% achieved by Carbobenzyloxy-L-histidine film. XPS studies confirmed that Carbobenzyloxy-L-histidine molecule could adsorb on SS surface. The quantum chemical calculation and dynamic simulation provided the theoretical support about the inhibition mechanism.
研究领域:
材料科学
·
腐蚀工程
·
表面化学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）