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Assessing the corrosion protection property of coatings loaded with corrosion inhibitors using the real-time atmospheric corrosion monitoring technique

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 119-126页

作者： Xiaoxue Wang Lulu Jin Jinke Wang Rongqiao Wang Xiuchun Liu Kai Gao Jingli Sun Yong Yuan Lingwei Ma Hongchang Qian Dawei Zhang School of Energy and Power engineering Beihang UniversityBeijing 100191China Beijing Institute of Space Long March Vehicle Beijing 100076China National Materials corrosion and protection Data center University of Science and Technology BeijingBeijing 100083China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China Shanghai Spaceflight Precision Machinery Institute Shanghai 201600China

The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal ***,limited studies have applied ACM to the corrosion protection properties of organic *** study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors,both applied on ACM sensors,to observe their corrosion protection properties over *** with artificial damage via scratches were exposed to immersion and alternating dry and wet environments,which allowed for monitoring galvanic corrosion currents in *** the corrosion tests,the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy *** trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface *** alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic *** with the blank epoxy coating,the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.

关键词： atmospheric corrosion monitoring technology corrosion inhibitor coating carbon steel corrosion protection

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Effect of Microstructures on corrosion Behavior of Nickel Coatings:(Ⅰ) Abnormal Grain Size Effect on corrosion Behavior

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Journal of Materials Science & Technology 2015年第12期31卷 1186-1192页

作者： Guozhe Meng Yang Li Yawei Shao Tao Zhang Yanqiu Wang Fuhui Wang Xuequn Cheng Chaofang Dong Xiaogang Li corrosion and protection Laboratory Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University)Ministry of Education Laboratory for corrosion and protection Institute of Metal ResearchChinese Academy of Sciences corrosion and protection center University of Science and Technology Beijing

Nickel coatings with different microstructures were synthesized by pulse jet electrodeposition *** morphology and microstructure were investigated by scanning electron microscopy（SEM）and transmission electron microscopy（TEM）.The corrosion property of the coatings was studied by using polarization,electrochemical impedance spectroscopy（EIS）,potential of zero free charge（PZFC） measurements and Mott-Schottky（M-S） *** results showed that the coating with grain size of 50 nm possessed higher corrosion resistance than that with grain size of 10 *** abnormal behavior may be related to the existence of nanoscale twins in the coatings and the lower concentration of acceptor in the passive films.

关键词： Nanocrystalline Pulse jet electrodeposition corrosion Grain size Growth twins

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Relationship between electrochemical characteristics and SCC of X70 pipeline steel in an acidic soil simulated solution

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Acta Metallurgica Sinica(English Letters) 2009年第1期22卷 58-64页

作者： Zhiyong LIU Xiaogang LI Yingrui ZHANG Cuiwei DU Guoli ZHA Key Lab of corrosion Erosion and surface Technique Beijing Corrosion and Protection Center University of Science and Technology Beijing Beijing 100083 China Mechanical engineering Department University of Rochester NY 14627 USA

Stress corrosion cracking （SCC） of X70 pipeline steel in simulated solution of the acidic soil in Yingtan in China was investigated using slow strain rate test （SSRT）, SEM and potentiodynamic polarization technique. Experiment results indicate that X70 steel is highly susceptible to SCC as applied potential reduces, which is manifested in loss of toughness and brittle fracture. Constaat polarization current can detect the occurrence of SCC. The lower the polarization current is the sooner stress corrosion cracking occurs. The SCC mechanisms are different at varying potentials. When potential is higher than open circuit potential, anodic process controls SCC, whereas when potential is far lower than open circuit potential, cathodic process controls SCC, and between these two potential regions, a combined electrochemical process controls the SCC. Stress or strain has a synergistic effect with electrochemical reactions to accelerate the cathodic hydrogen evolution process, which makes the X70 pipeline steel to be more susceptible to SCC.

关键词： X70 steel SCC Electrochemical process Acidic soil

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Effect of Microstructures on corrosion Behavior of Nickel Coatings:(Ⅱ) Competitive Effect of Grain Size and Twins Density on corrosion Behavior

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Journal of Materials Science & Technology 2016年第5期32卷 465-469页

作者： Guozhe Meng Yang Li Yawei Shao Tao Zhang Yanqiu Wang Fuhui Wang Xuequn Cheng Chaofang Dong Xiaogang Li corrosion and protection Laboratory Key Laboratory of Superlight Materials and Surface Technology(Harbin Engineering University)Ministry of EducationHarbin 150001China Laboratory for corrosion and protection Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China corrosion and protection center University of Science and Technology BeijingBeijing 100083China

Nanocrystalline nickel coatings with grain size of 50 nm were annealed in vacuum at 200 ℃ and 400 ℃ for 10 min, Their microstructures were investigated by transmission electron microscopy （TEM）. And their corrosion behaviors were studied by means of polarization and electrochemical impedance spectroscopy （EIS）, The results showed that their grain size grew up to about 60 nm （200 ℃） and 500 nm （400 ℃）, respectively, The specimen annealed at 200 ℃ possessed higher density of twins in compared with the counterparts of as-deposited and annealed at 400 ℃, The normal grain size effect on the corrosion behavior was not observed, However, it was found that the corrosion resistance of the coating linearly changed with the density of twins.

关键词： Nanocrystalline corrosion properties Annealing twins Grain sizes

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Galvanic Effect Between Galvanized Steel and Carbon Fiber Reinforced Polymers

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 342-351页

作者： Chi Zhang Da-Jiang Zheng Guang-Ling Song center for Marine Materials corrosion and protection State Key Laboratory of Physical Chemistry of Solid SurfaceCollege of MaterialsXiamen University School of Mechanical and Mining engineering The University of Queensland

The galvanic corrosion behavior of carbon fiber reinforced polymers （CFRPs） GM-CFRP and Tepex-CFRP in contact with a Zn-coated DP590 steel in solution containing 0.9 wt% NaCl＋ 0.1 wt% CaCl2 ＋ 0.075 wt% NaHCO3 was investigated. The results showed that the GM-CFRP/steel couple was initially more resistant to galvanic corrosion, but its galvanic corrosion activity gradually became higher than the Tepex-CFRP/steel couple. The different galvanic behaviors of these two couples were discussed based on the electrochemical performance of GM-CFRP, Tepex-CFRP and DP590 coupons in the testing solution.

关键词： Carbon fiber reinforced polymer (CFRP) Composite Carbon fiber Steel Galvanic effect

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Superhydrophobic and corrosion-resistant siloxane-modified MgAl-LDHs coatings on magnesium alloy prepared under mild conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 450-463页

作者： Wenxi Zhang Zhangzelong Zhuo Dan Xu Liang Wu Zhihui Xie Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China College of Materials Science and engineering/National engineering Research center for Magnesium Alloys Chongqing UniversityChongqing 400044China

We have developed a superhydrophobic and corrosion-resistant LDH-W/PFDTMS composite coating on the surface of Mg *** composite comprised a tungstate-intercalated(LDH-W)underlayer that was grown at low temperature(relative to hydrothermal reaction conditions)under atmospheric pressure and an outer polysiloxane layer created from a solution containing perfluorodecyltrimethoxysilane(PFDTMS)using a simple immersion *** successful intercalation of tungstate into the LDH phase and the following formation of the polysiloxane layer were confirmed through X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,and X-ray photoelectron spectroscopy(XPS).The corrosion resistance of the LDH-W film,both before and after the PFDTMS modification,was evaluated using electrochemical impedance spectroscopy(EIS),Tafel curves,and immersion *** results showed that Mg coated with LDH-W/PFDTMS exhibited significantly enhanced corrosion protection compared to the unmodified LDHW film,with no apparent signs of corrosion after exposure to 3.5wt%NaCl solution for 15 ***,the LDH-W/PFDTMS coating demonstrated superior superhydrophobicity and self-cleaning properties against water and several common beverages,as confirmed by static contact angle and water-repellency *** results offer valuable insights into preparing superhydrophobic and corrosion-resistant LDH-based composite coatings on Mg alloy surfaces under relatively mild reaction conditions.

关键词： Mg alloy corrosion coating layered double hydroxide

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Electrochemical corrosion behavior of 300M ultra high strength steel in chloride containing environment

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Acta Metallurgica Sinica(English Letters) 2010年第4期23卷 301-311页

作者： Min SUN Kui XIAO Chaofang DONG Xiaogang LI corrosion and protection center School of Material and Engineering University of Science and Technology Beijing Beijing 100083 China

The electrochemical corrosion behavior of 300M ultra high strength steel in chloride containing environment was investigated by potentiodynamic polarization technique, electrochemical impedance spectroscopy （EIS） and scanning electron microscopy （SEM）. The results show that uniform corrosion occurs on 300M steel during the elec- trochemical measurements because no anodic passivation phenomenon is observed on polarization curves within the measurement range. The tests also show that 300M steel is highly susceptible to chloride containing solution, which is characterized by corrosion current density increasing with the addition of chlorides, and corrosion potential shifting towards positive direction and corrosion resistance decreasing, pos- itively suggesting that chloride ions speed up the corrosion rate of 300M steel. Mean- while corrosion products on the 300M steel surface formed during the salt spray test are too loose and porous to effectively slow down the corrosion rate. Additionally, a schematic structure of uniform corrosion mechanism can explain that 300M steel has better property of stress corrosion cracking （SCC） resistance than stainless steels.

关键词： 300M ultra high strength steel Electrochemical corrosion Chloride

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Effect of 2-mercaptobenzothiazole concentration on sour-corrosion behavior of API X60 pipeline steel:Electrochemical parameters and adsorption mechanism

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 271-282页

作者： Masoud Sabzi Amir Hayati Jozani Farzad Zeidvandi Majid Sadeghi Saeid Mersagh Dezfuli Young Researchers and Elite Club Dezful BranchIslamic Azad UniversityDezfulIran Department of Materials Science and engineering Science and Research BranchIslamic Azad UniversityTehranIran center of excellence for surface engineering and corrosion protection of industrial School of Metallurgy and Materials EngineeringCollege of EngineeringUniversity of TehranP.O.Box 11155-4563TehranIran

We investigated the effect of the 2-mercaptobenzothiazole concentration on the sour-corrosion behavior of API X60 pipeline steel in an environment containing H_(2)S at 25°C and in the presence of 0,2.5,5.0,7.5,and 10.0 g/L of 2-mercaptobenzothiazole *** examine this behavior,we conducted open-circuit potential(OCP),potentiodynamic polarization,and electrochemical impedance spectroscopy(EIS)*** dispersive spectroscopy and scanning electron microscopy were also used to analyze the corrosion *** results of the OCP and potentiodynamic polarization tests revealed that 2-mercaptobenzothiazole reduces the speed of both the anodic and cathodic *** assessment of the Gibbs free energy of the inhibitor(△G_(ads)^(■))indicated that its value was less than-20 kJ·mol^(-1)and greater than-40 k J·mol^(-1).Therefore,the adsorption of 2-mercaptobenzothiazole onto the surface of the API X60 pipeline steel occurs both physically and chemically,the latter of which is particularly *** addition,as the△G_(ads)^(■)dsvalue was negative,we could conclude that the adsorption of 2-mercaptobenzothiazole onto the surface of the pipeline steel occurs *** EIS results indicate that with the increase in the 2-mercaptobenzothiazole inhibitor concentration,the corrosion resistance of API X60 steel *** analysis of the corrosion products revealed that iron sulfide compounds form on the *** summary,the results showed that an increase in the inhibitor concentration results in a decrease in the corrosion rate and an increase in inhibitory ***,we found that the 2-mercaptobenzothiazole adsorption process on the API X60 steel surfaces in an H2 S-containing environment follows the Langmuir adsorption isotherm and occurs spontaneously.

关键词： API X60 steel sour corrosion 2-mercaptobenzothiazole inhibitor concentration electrochemical parameters environments containing hydrogen sulfide

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Simulated corrosion Test of Q235 Steel in Diatomite Soil

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Journal of Iron and Steel Research International 2015年第4期22卷 352-360页

作者： Jian LI Hang SU Feng CHAI Xiao-ping CHEN Xiang-yang LI Hui-min MENG Division of engineering Steel Central Iron and Steel Research Institute corrosion and protection center University of Science and Technology Beijing

Through the study of the corrosion behavior of Q235 steel in actual Yingtan soil and two simulated acidic soils with different water contents, the calculation of corrosion mass losses, and the analysis of the corrosion mor- phologies and products by means of scanning electron microscope （SEM） and X-ray diffraction （XRD）, the results demonstrated that the diatomite soil could simulate the corrosion in actual soil veritably. In both actual soil and simu- lated soil with 16.4% water content, the corrosion rates of Q235 steel were approximately 0.1 mm/a, the corrosion morphologies were mainly extension and connection of corrosion spots on sample surface, and the corrosion products were composed of a-FeOOH, γ-FeOOH, Fe3 O4 and Fe2O3. When other media conditions remained unchanged, the corrosion area of Q235 steel was larger in simulated soil with 34.5 % water content, and the corrosion rate reached 0.48 mm/a after 360 h of corrosion, which was nearly 5 times as the value in actual soil. Compared with the corro- sion products in actual soil, the proportion of γ-FeOOH in simulated soil with 34.5 % water content was higher, and the wα-FeOOH/wγ-FeOOH ratio was 1. 4, which was only 1/3 of the value in actual soil.

关键词： soil corrosion simulated test diatomite corrosion behavior water content Q235 steel

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Lifecycle of cobalt-based alloy for artificial joints:From bulk material to nanoparticles and ions due to bio-tribocorrosion

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Journal of Materials Science & Technology 2020年第11期42卷 98-106页

作者： Zhongwei Wang Yu Yan Yang Wang Yanjing Su Lijie Qiao Beijing Advanced Innovation center for Materials Genome engineering Corrosion and Protection CenterKey Laboratory for Environmental Fracture(MOE)University of Science and Technology BeijingBeijing 100083China College of Materials Science and engineering Chongqing University of TechnologyChongqing 400054China corrosion and protection center Advanced Institute for Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China

The release of debris and ions from metallic artificial joints during bio-tribocorrosion posed a severe threat to patient *** this work,the lifecycle of a Co Cr Mo alloy was presented by investigating the subsurface microstructure transformation *** results showed that the originally coarse grains changed to nano-grains(NGs)on the top region of the alloy,and nanoparticles(NPs)were torn off the surface,which were then blocked by the *** agglomerated alloy NPs contained in the tribofilm transformed into debris after being removed from the alloy *** majority of the torn-off NPs were corroded and released ions into solution due to their high chemical activities.

关键词： Cobalt-based alloy Artificial joints Wear mechanism Bio-t Ribocorrosion TEM

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