Nuclear Engineering and Technology
·
2023
·
IF 2.7
Guanghui Wang,Yaorui Li,Mingjian He,Meng Zhang,Yang Gao,Hui He,Caishan Jiao
In spent fuel reprocessing, UO 2 (DBP) 2 (U-DBP) can be deposited in stainless steel equipment. U-DBP must be removed by dissolution and the process must not cause corrosion to stainless steel. This study was conducted to find the best scheme for dissolution. U-DBP was manufactured by the titrimetric sedimentation method. The effects of different factors on the dissolution of U-DBP were investigated. For example, solid-liquid ratio, hydrazine carbonate solutions with different mass components, mixed solutions containing different concentrations of H 2 O 2 , and different carbonates. The results indicated that U-DBP does not have a regular crystal morphology. With the increase of the solid-liquid ratio and the mass fraction of hydrazine carbonate, the concentration of U(VI) at the dissolution equilibrium increases gradually. The addition of H 2 O 2 has a great promotion effect on the dissolution. However, when the concentration of H 2 O 2 is greater than 0.5 M, the dissolution solution may have an erosive effect on the stainless steel. (NH 4 ) 2 CO 3 can increase the dissolution capacity of dissolved U-DBP, but it may also accelerate the corrosion of stainless steel.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2024
·
IF 7.4
Ziyang Guo,Liyuan Qin,Haoming Zou,Xiao Ma,Dongliang Wang,Yansong Shi,Xijuan Lv,Yujie Qiang,Wei Guo,Qinghai Shu
This study investigates the corrosion mechanism of carbon steel (CS) induced by high-energy density materials (HEDMs), NTO and AP. CS exhibited corrosion rates of 1.314 mm/y and 8.690 mm/y when exposed to NTO and AP powders, respectively. However, these rates shifted to 9.050 mm/y for NTO and 3.597 mm/y for AP in solution. Experiments combining grand canonical Monte Carlo (GCMC) and ab initio molecular dynamics (AIMD) simulations demonstrate AP’s greater susceptibility to hygroscopicity, establishing a corrosive environment. CS maintains an unabated corrosion rate as Cl - from AP reduction damages corrosion products. Conversely, NTO’s compact corrosion products effectively delay CS corrosion.
研究领域:
材料科学
·
腐蚀科学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Jingbao Wang,Jingmao Zhao,Mohammad Tabish,Fan Shi,Qi Cheng,Lijun Peng
The application of inhibitor as an efficient method to protect Zn Mg Al (ZMA) coated steel is first reported in this work. The inhibition performances of newly synthesized cerium gluconate (CG) for ZMA coated steel in 0.05 M NaCl solution were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscope (XPS), electrochemical impedance spectroscopy (EIS) measurements, potentiodynamic polarization (PDP) measurements and neutral salt spray (NSS). The synthesized CG exhibits excellent inhibition efficiency of 98.4% at 200 ppm, which is much better than the individual or combined use of sodium gluconate (SG) and cerium (III) nitrate hexahydrate (CNH). Additionally, CG shows long-term protection for ZMA coated steel. A synergistic inhibition model between Ce oxide/hydroxide precipitation with CG adsorption film is proposed based on the obtained results. This work offers a promising option for the corrosion protection of ZMA coated steel.
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
Heliyon
·
2024
·
IF 3.4
Guofang Gao,Junxia Wang,Penghui Liang,Yilei Ruan,Dehua Wang,Li Feng,Xuemei Ma,Zhiyong Hu,Hailin Zhu
In this paper, two triazine ring–containing quaternary ammonium salt Gemini surfactants (C 12 -2-C 12 and C 14 -2-C 14 ) were synthesized. The minimum inhibitory concentrations against sulfate-reducing bacteria (SRB) of C 12 -2-C 12 , C 14 -2-C 14 and dodecyl dimethyl benzyl ammonium chloride (1227) were determined using the double-dilution method. The performance of C 12 -2-C 12 and C 14 -2-C 14 in inhibiting carbon steel corrosion in the presence of SRB was examined, with 1227 serving as a control sample. The corrosion inhibition properties were assessed through static weight loss, electrochemical testing, and surface analysis. The interface adsorption behaviour of the corrosion inhibitor was explored via molecular dynamics simulations. Results indicate that the minimum inhibitory concentrations (MIC) of C 12 -2-C 12 (0.021 mM) and C 14 -2-C 14 (0.005 mM) are lower than that of 1227 (0.300 mM). The results of static weightlessness measurement reveal that the corrosion inhibition effects of the three surfactants on carbon steel soaked in SRB solution follow the order of C 14 -2-C 14 > C 12 -2-C 12 > 1227, with inhibition rates of 93.23 %, 88.45 %, and 76.49 % at a concentration of 0.2 mM, respectively. The adsorption behavior of these surfactants (1227, C 12 -2-C 12 , and C 14 -2-C 14 ) on carbon steel surface in the presence of SRB conforms the Langmuir isotherm adsorption model. The outcomes of electrochemical experiments align with the static weight loss data. Furthermore, surface analysis results suggest that the surfactants can adsorb onto the carbon steel surface to form a protective film, thereby inhibiting SRB-induced corrosion.
研究领域:
材料科学
·
微生物学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Liang Chen,Yao Li,Xincheng Zhang,Yuanzhi Cui,Da Shi,Yan Wang,Ping Rao,Liping Zhao,Hua Guo,Mingming Guo,Wenshan Ren
Iron ions (Fe3+) play a crucial role in a variety of environmental, industrial, and biological processes. However, elevated concentrations of iron ions can lead to significant issues, such as environmental pollution, health risks, and accelerated material degradation, including metal corrosion. Therefore, the ability to rapidly and accurately detect Fe3+ ions at low concentrations is essential to ensure environmental safety, public health, and industrial stability. In this study, a series of tough luminescent porous hydrogels were fabricated through the cryogelation method by introducing 4′-(N-propenyl-4-pyridinio)-2,2′:6′,2″-terpyridine perchlorate (PPTP) into a hydrogel network featuring multihydrogen bonding. The obtained porous hydrogels exhibit not only outstanding fracture strength but also rapid highly sensitive detection of low concentrations of Fe3+ ions. Notably, the hydrogel sensors achieved a theoretical limit of detection (LOD) of 0.34 μM within just 10 s, which is acceptable within the limit of the Minister of Health of the People’s Republic of China. Additionally, a distinctive feature of this porous hydrogel is its ability to visually detect iron ion content through a color change from white to light green, providing a simple and effective method for real-time monitoring of early-stage stainless-steel corrosion. This combination of ease of fabrication, high sensitivity in fluorescence detection, colorimetric response, and convenient usage makes the P(MNAGA-co-HEMA-co-PPTP) hydrogel a highly effective fluorescent chemosensor for Fe3+ ions.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Case Studies in Construction Materials
·
2025
·
IF 6.6
Jiandong Zuo,Sitao Luo,Biqin Dong,Guanqi Wei,Yanshuai Wang
Corrosion of steel in reinforced concrete usually occurs in marine environment. In this study, the fly ash-slag-based geopolymer coating of steel were modified by the epoxy emulsion (EP) as toughening agent. The influence of different EP contents on the interfacial properties of the coatings was investigated through adhesion test and scanning electron microscope (SEM) analysis. To evaluate the anti-corrosion behavior of the coatings, electrochemical measurement was conducted in five typical simulated solutions for three months. The anti-corrosion performance of the coatings was comprehensively assessed by considering the corrosion morphology and corrosion rate of the coated steel samples. The results demonstrated that the 5 % EP-modified geopolymer coating exhibited superior adhesion and corrosion resistance compared to the steel reinforcement. The rust inhibition mechanism of the modified geopolymer coating can be attributed to the dense structure of the geopolymer and the formation of Mg-Al LDH during the geopolymerization reaction.
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
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 41
·17791-17814
·
IF 3.288
Hany M. Abd El-Lateef,K. Shalabi,Ahmed H. Tantawy
The facile synthesis approach, surface-active properties, and anti-corrosive efficiency of innovative urea-based cationic fluorinated surfactants (FUS) of variable alkyl chain length were investigated. The effect of as-prepared FUS inhibitors on carbon steel corrosion in 15% HCl solution at 20–50 °C was examined using weight loss and various electrochemical methods (open circuit potential (OCP) vs. time, potentiodynamic polarization (PDA) and electrochemical impedance spectroscopy (EIS) methods). The corrosion protection capacities at an optimum concentration (0.5 mM) are 93.2% (FUS-8), 96.3% (FUS-10) and 97.6% (FUS-12) by PDA, comparable to the findings achieved by EIS. PDA measurements indicated that the studied FUS act as inhibitors of mixed-type and chemical adsorption on a carbon steel interface following the Langmuir isotherm model. The thermodynamic and kinetic indices of the corrosion and adsorption processes were estimated and interpreted. Surface examinations by X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy and energy dispersive X-ray analysis (FESEM/EDX) revealed the formation of a protecting layer at the carbon steel/HCl interface. Quantum chemical indices (DFT based) delivered more understanding of the inhibition mechanism. Molecular dynamics (MD) simulations were accomplished to explore the configurational adsorption performance of the studied fluorosurfactants on the iron(110) interface. It is supposed that these findings are of some significance for the reasonable design of effective inhibitors for acidic corrosion.
研究领域:
材料科学
·
电化学
·
计算化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Xin Liu,Jihui Wang,Wenbin Hu
The hollow Fe 3 O 4 microspheres were firstly synthesized by solvothermal method. And then Fe 3 O 4 /MBT nanocomposite inhibitor was obtained by loading 2-mercaptobenzothiazole (MBT) inhibitor under negative vacuum impregnation treatment and characterized using transmission electron microscopy , X-ray diffraction, Fourier transform infrared spectroscopy , nitrogen adsorption-desorption isotherms and vibrating sample magnetometer . The release behavior of MBT and inhibition behavior of Fe 3 O 4 /MBT nanocomposite under different magnetic field (MF) strength were evaluated by UV–vis spectroscopy, electrochemical techniques and immersion tests. The results show that the synthesized superparamagnetic Fe 3 O 4 /MBT nanocomposite shows high MBT loading capacity of 55.4 %. Under the application of MF, the release behavior of MBT from Fe 3 O 4 /MBT is dominated by Fickian diffusion and diffusion among magnetic nanoparticles , and the release rate and inhibition efficiency are less than that of without MF under the same release time. The nanocomposite has a good inhibition effect for carbon steel in NaCl solution with maximum inhibition efficiency of 95.7 %, and also possesses excellent recycling stability with loading capacity of 45.1 % and inhibition efficiency of 78.8 % after five cycles.
研究领域:
材料科学
·
电化学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
Water
·
2024
·Vol. 16
·期 8
·1182
·
IF 3
Ping Xu,Xingrun Chen
Developing environmentally friendly and biodegradable corrosion inhibitors is an important research direction due to the toxicity and non-degradability of conventional carbon steel corrosion inhibitors added to circulating cooling water environments. Polysaccharides in EPSs (Exopolysaccharides) can be used as green corrosion inhibitors, but a low inhibition rate limits their practical application. Chemical modification is widely used to modify the functionality of polysaccharides by altering their physicochemical properties and structures, thereby enhancing or supplementing their functional characteristics. In this study, we employed chloroacetic acid as an esterifying agent to chemically modify Dextran and successfully synthesized a modified polysaccharide derivative with a substitution degree of 0.326. This derivative efficiently inhibited the corrosion of carbon steel in circulating cooling water environments. The carboxymethylated dextran (CM-Dextran) formed after synthesis could adsorb onto metal surfaces to form a protective film, thereby inhibiting metal surface dissolution reactions and exhibiting anodic corrosion inhibition properties. The experimental results showed that the corrosion inhibition efficiency of CM-Dextran after modification increased by up to 57.4%, with a maximum inhibition efficiency of 82.52% at a concentration of 4 mg/mL. This study provides new insights and opportunities for the development of environmentally friendly corrosion inhibitors derived from polysaccharides.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2014
·
IF 2.063
Jianhong Tan,Lei Guo,Shenying Xu
Corrosion inhibition of indole-3-carboxylic acid (ICA) on mild steel in 0.1 M H 2 SO 4 solution has been studied through weight loss, potentiodynamic polarization , electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) experiments. Plots from polarization and EIS techniques show ICA acts as a mixed type inhibitor and its high inhibition effectiveness is assumed to occur via the adsorption of the inhibitor molecules on steel surface. It is then found that this adsorption behavior obeys the Langmuir adsorption isotherm . Theoretical techniques incorporating molecular mechanics and molecular dynamics were used to simulate the adsorption of ICA molecule on Fe(1 1 0) surface.
研究领域:
材料科学
·
腐蚀科学
·
电化学
·
表面工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 77
·48526-48536
·
IF 3.108
Qian Zeng,Jinwei Zhang,Hongye Cheng,Lifang Chen,Zhiwen Qi
Ionic liquids (IL) become more promising in industrial applications, especially in desulfurization processes. It is of great importance to investigate their corrosivity to steel and the effect of steel corrosion on desulfurization performance. In this work, the corrosion behavior of two typical metals, namely mild steel and stainless steel, in 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM]HSO4) IL systems for desulfurization application were investigated by weight loss and surface analyses. The model oil can inhibit the IL corrosivity, while the presence of water or H2O2 enhances the corrosion degree. The bonding information of [BMIM]HSO4 adsorbed on a steel surface was confirmed using ATR-FTIR. It was found that the IL film is mainly adsorbed on the metal surface by the interaction of the imidazolium group of the cation and HSO4− of the anion with the steel surface. From the ICP-MS and Raman analyses, the primary component of corrosion products is iron sulfate (ferric sulfate for mild steel and ferrous sulfate for stainless steel). Localized corrosion (pitting and/or intergranular corrosion) appears on steel surface from SEM observation, which could be a serious safety risk to the [BMIM]HSO4-based desulfurization systems for industrial application. The corrosion has a side effect on the desulfurization performance of [BMIM]HSO4.
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 MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Xintong Wang,Jiang Yang,Xu Chen,Wei Ding
The inhibition properties of 2-mercaptobenzimidazole (MBI) and its synergism with oleic imidazoline (OIM) for carbon steel in CO 2 -saturated brine solution were investigated by electrochemical, weight loss measurements, surface analysis and quantum chemical calculations. The effectiveness of MBI for OIM was also compared to the other sulfur-containing corrosion inhibitors such as 2-mercaptothanol (ME), mercaptoacetic acid (TGA), and thiourea (TU). The results show that a mixture of MBI and OIM gave a better synergistic corrosion inhibition than that of ME, TGA, and TU. OIM is protonated and coupled with MBI by hydrogen bonding to co-adsorb on the carbon steel surface. MBI adsorbs on Fe by a bidentate binding N S bridge connection, which effectively prevents the carbon steel from CO 2 corrosion.
研究领域:
材料科学
·
电化学
·
表面化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）