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Corrosion Performance of carbon steel in CO_(2) Aqueous Environment Containing Silty Sand with Different Sizes

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Acta Metallurgica Sinica(English Letters) 2017年第11期30卷 1055-1066页

作者： Songle Lu Wei Liu Shian Zhang Xiaolong Qi Xiaogang Li Xuemin Wang Corrosion and Protection Center Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Scienceand Technology Beijing Beijing 100083 China

Corrosion performance of carbon steel in CO2 aqueous environment containing silty sand with different sizes was investigated by immersion tests and electrochemical measurements. Silty sand could form an adsorption layer on steel surface in initial period, and the sand adsorption layer was turned into a mixture film of silty sand with corrosion product in last period. The adsorption layer in 325 mesh condition （large size） had the fewest pores for H2CO3 transport, exhibiting the highest cathodic current inhibition. In spite of little corrosion product, the sand adsorption film formed in 325 mesh condition induced the lowest corrosion rate. For 1000 and 5000 mesh silty sand, the sand adsorption layer had some pores for H2CO3 transport, leading to low cathodic current inhibition and much matrix dissolution. But the adsorption layer for 5000 mesh silty sand （small size） had the largest special surface area to accelerate heterogeneous precipitation of corrosion product FeCO3. Therefore, the mixture film in 5000 mesh condition was more compact, exhibiting stronger anodic inhibition and lower corrosion rate than those in 1000 mesh condition.

关键词： Silty sand Sand adsorption layer Corrosion product film Corrosion inhibition carbon steel

Corrosion inhibition of carbon steel in hydrochloric acid by cationic arylthiophenes as new eco-friendly inhibitors: Experimental and quantum chemical study

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Chinese Journal of Chemical Engineering 2021年第12期34卷 197-217页

作者： Abd El-Aziz S.Fouda Mohamed A.Ismail Abdulraqeb A.Al-Khamri Ashraf S.Abousalem Department of Chemistry Faculty of ScienceEl-Mansoura UniversityEl-Mansoura 35516Egypt Department of Chemistry Faculty of EducationArts and SciencesUniversity of Saba RegionMaribYemen Quality Control Laboratory Operations DepartmentJotunEgypt

This study describes the adsorption behavior of three arylthiophene derivatives namely:2-(4-amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride salt(MA-1217),2-(4-amidinophenyl)-5-[4-chlorophenyll thiophene dihydrochloride salt(MA-1316) and 2-(4-amidino-3-fluorophenyl)-5-[4-ch lorophenyllthiophene dihydrochloride salt(MA-1312) at C-steel in 1.0 mol·L^(-1) HCl interface using experimental and theoretical *** and mass loss measurements showed that the inhibition efficiency(IE) of the arylthiophene derivatives increases with increasing concentrations and exhibited maximum efficiency 89% at 21×10^(-6) mol·L^(-1)(MA-1217) by mass loss *** investigated arylthiophene derivatives obey the Langmuir adsorption *** polarization studies the arylthiophene derivatives act as mixed-type *** analysis were carried out and *** mode of orientation and adsorption of inhibitor molecules on C-steel surface was studied using molecular dynamics(MD) *** chemical parameters as well as the radial distribution function indices and binding energies confirm the experimental results.

关键词： carbon steel Corrosion inhibition Adsorption Arylthiophene derivatives Polarization Electrochemical frequency modulation

On the localised corrosion of carbon steel induced by the in-situ local damage of porous corrosion products

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Journal of Materials Science & Technology 2020年第19期54卷 95-104页

作者： Lin Pang Zhengbin Wang Yugui Zheng Xueming Lai Xu Han CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Dagang Oilfield Oil Production Technology Research Institute of China National Petroleum Corporation Tianjin300280China Third Oil Production Plant of Dagang Oilfield Company Cangzhou061723China

The effect of in-situ local damage of uniform porous corrosion products on the localised corrosion of carbon steel is investigated using the wire beam electrode technique(WBE)combined with morphology characterisation and electrochemical *** WBE measurements demonstrate that the localised corrosion is enhanced by the in-situ local removal of porous corrosion products,supported by the morphology characterisation and electrochemical *** enhanced localised corrosion does not originate from the damaged wire in WBE where the corrosion products are removed but from the other undamaged wires,which is reported for the first time.A mechanism is proposed that the intensive anodic polarisation effect of the damaged wire on the undamaged wires could account for the enhanced localised corrosion,which is due to the protective corrosion products newly formed on the damaged surface and the increase in the potential of damaged wire.

关键词： carbon steel Localised corrosion Wire beam electrode Corrosion products

Effects of heat treatment on the corrosion resistance of carbon steel coated with LaMgAl_(11)O_(19) thermal barrier coatings

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International Journal of Minerals,Metallurgy and Materials 2015年第10期22卷 1050-1059页

作者： Liang-liang Huang Hui-min Meng Li-kang Liang Sen Li Jin-hui Shi Institute for Advanced Materials and Technology University of Science and Technology Beijing

LaMgAl11O19thermal barrier coatings（TBCs） were applied to carbon steels with a NiCoCrAlY bond coat by plasma spraying. The effects of heat treatment on the corrosion resistance of carbon steel coated with LaMgAl11O19TBCs were investigated in 3.5wt% Na Cl solution using polarization curves, electrochemical impedance spectroscopy（EIS）, scanning electron microscopy（SEM）, and X-ray diffraction（XRD）. The results show that a large number of cracks are found in the LaMgAl11O19TBCs after the samples are heat-treated, including some through-thickness cracks. The corrosion forms of the as-sprayed and heat-treated TBCs are uniform corrosion and pitting corrosion, respectively. The as-sprayed TBCs exhibit three EIS time constants after being immersed for less than 7 d, and then a new time constant appears because of steel substrate corrosion. When the immersion time is increased to 56 d, a Warburg impedance（W） component appears in the EIS data. The EIS data for the heat-treated TBCs exhibit only two time constants after the samples are immersed for less than 14 d, and a new time constant appears when the immersion time is increased further. The heat treatment reduces the corrosion resistance of carbon steel coated with LaMgAl11O19TBCs. The corrosion products are primarily γ-Fe OOH and Fe3O4.

关键词： thermal barrier coatings carbon steel corrosion pl

Corrosion behavior of coating with plasma sprayed 8YSZ on the surface of carbon steel

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Journal of Rare Earths 2012年第6期30卷 592-598页

作者：刘扬佳范习之曾水冰王盈邹兵林古立建陈小龙 Zuhair Subhani Khan 杨道武曹学强 Department of Chemical and Biological Engineering Changsha University of Science and Technology State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences

The corrosion behavior of plasma sprayed 8YSZ （ZrO2 stabilized by 8 wt.% Y2O3） coating on the surface of carbon steel in seawater was investigated. The electrochemical impedance spectroscopy was used as a non-destructive evaluation technique to monitor the protection properties of the coating when it was immersed in seawater, and corrosion products were characterized by scanning electron microscopy, energy dispersive spectrometry and X-ray photoelectron spectroscopy. The results indicated that three time constants were obtained dur ing the initial immersion period, and then a new time constant appeared due to the formation of rust layer, which was corresponding to the corrosion process. Corrosion products were formed on the coating surface as well as inside the coating, and the crystalline composition of the rust layer mainly consisted of γ-FeOOH.

关键词： thermal barrier coating carbon steel corrosion behavior electrochemical impedance spectroscopy rare earths

Modeling the rate of corrosion of carbon steel using activated diethanolamine solutions for CO2 absorption

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Chinese Journal of Chemical Engineering 2020年第8期28卷 2099-2110页

作者： Lubna Ghalib Ahmed Abdulkareem Brahim Si Ali Shaukat Ali Mazari Materials Engineering Department Mustansiriyah UniversityBaghdad 14022Iraq Mathematics Science Directorate General of Education Rusafa 1BaghdadIraq Department of Chemical Engineering University of Malaya50603 Kuala LumpurMalaysia Department of Chemical Engineering Dawood University of Engineering and TechnologyKarachi 74800Pakistan

A mechanistic model is developed to investigate the influence of an activator on the corrosion rate of carbon steel in the absorption processes of carbon dioxide(CO2).Piperazine(PZ)is used as the activator in diethanolamine(DEA)aqueous *** developed model for corrosion takes into consideration the effect of fluid flow,transfer of charge and diffusion of oxidizing agents and operating parameters like temperature,activator concentration,CO2 loading and *** study consists of two major models:Vapor–liquid Equilibrium(VLE)model and electrochemical corrosion *** electrolyte-NRTL equilibrium model was used for determination of concentration of chemical species in the bulk *** results of speciation were subsequently used for producing polarization curves and predicting the rate of corrosion occurring at the surface of *** increase in concentration of activator,increases the rate of corrosion of carbon steel in mixtures of activated DEA.

关键词： CO2 capture CO2 corrosion carbon steel Diethanolamine Piperazine Electrochemical model

Microbiologically Influenced Corrosion of Q235 carbon steel by Aerobic Thermoacidophilic Archaeon Metallosphaera cuprina

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Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 201-211页

作者： Hongchang Qian Shangyu Liu Wenlong Liu Pengfei Ju Dawei Zhang National Materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China BRI Southeast Asia Network for Corrosion and Protection(MOE) Shunde Graduate School of University of Science and TechnologyBeijingFoshan 528000China Shanghai Aerospace Equipment Manufacturer Shanghai 200245China

The effect of thermoacidophilic archaeon Metallosphaera cuprina(***)on the corrosion of Q235 carbon steel in its culture medium was investigated in this *** the sterile culture medium,the carbon steels showed uniform corrosion morphologies and almost no corrosion products covered the sample surface during 14 days of immersion *** the presence of ***,some corrosion pits appeared on the surface of carbon steels in the immersion test,exhibiting typical localized corrosion ***,the sample surfaces were covered by a large number of insoluble precipitates during the *** 14 days,the thickness of precipitates reached approximately 50μ*** results of weight loss test and electrochemical test demonstrated that the carbon steels in the ***-inoculated culture medium had higher corrosion rate than that in the sterile culture *** oxygen concentration cell caused by *** biofilms resulted in localized corrosion behavior,and the ferrous oxidation ability of *** accelerated the anodic dissolution of carbon steels,thus promoting the corrosion process of carbon steels.

关键词： Microbiologically influenced corrosion carbon steel Electrochemical impedance spectroscopy(EIS)

Preliminary Study on Corrosion Behaviour of carbon steel in Oil–Water Two-Phase Fluids

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Journal of Materials Science & Technology 2015年第12期31卷 1274-1281页

作者： Z.Y.Hu D.L.Duan S.H.Hou X.J.Ding S.Li Institute of Metal Research Chinese Academy of Sciences

The corrosion behavior of type 1045（AISI） carbon steel（CS） in oil-water fluids was investigated by considering the surface wetting state as the breakthrough *** surface water wetting percentage（SWWP）and corrosion weight loss of CS in different oil-water fluids were *** morphology and composition of the corrosion films were detected via scanning electron microscopy,electron-probe facescanning technology and Fourier-transform infrared *** results indicated that the corrosion weight loss of CS in the oil-water fluids corresponded with SWWP and that the corrosion process was influenced by the participation of oil.

关键词： carbon steel Corrosion behavior Wetting Fluid flow Fourier transform infrared(FTIR) spectroscopy

Inhibition effects of benzalkonium chloride on Chlorella vulgaris induced corrosion of carbon steel

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Journal of Materials Science & Technology 2020年第8期36卷 14-20页

作者： Junlei Wang Tiansui Zhang Xinxin Zhang Muhammed Asif Lipei Jiang Shuang Dong Tingyue Gu Hongfang Liu School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhanHubei430074China Department of Chemical and Biomolecular Engineering Institute for Corrosion and Multiphase TechnologyOhio UniversityAthensOH45701USA School of Chemical Engineering and Materials Changzhou Institute of TechnologyChangzhouJiangsu213032China

In this work,a surfactant,benzalkonium chloride(BAC),was used to study its effects on both the growth of Chlorella vulgaris and the corrosion caused by its *** results indicated that BAC at a low concentration of 3 mg/L suppressed *** growth and achieved 81%corrosion inhibition based on weight loss *** inhibition effects increased when the BAC dosage was *** 30 mg/L,the corrosion inhibition increased to 95%.Electrochemical results supported surface pitting analysis,weight loss results data and confirmed the corrosion inhibition.

关键词： Benzalkonium chloride Chlorella vulgaris carbon steel Corrosion Electrochemistry