ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Yuhua Dong,Xueyan Du,Yutong Xie,Kexin Wu,Qiong Zhou
A quaternary composite of Ti 3 C 2 /TiO 2 /TiN/polyaniline was synthesized by doping TiN nanoparticles on the calcined Ti 3 C 2 MXene nanosheets , and then polyaniline was deposited through chemical oxidation . The bandgap and flat band potential of composite were determined by X-ray diffraction and ultraviolet–visible spectroscopy. In order to prepare photoanode and photocathodic protective coating, the quaternary composite was added to the polyvinyl alcohol solution and epoxy resin to. Photoelectrochemical results indicated that photoanode and relevant photocathodic protective coating had similar photocurrent with about 5 μA cm −2 , but open circuit potential of the photocathodic protective coating was more negative than that of photoanode. The R ct of photoanode with illumination was 5.5 kΩ, while that of photocathodic coating was 136 kΩ. The 304 stainless steel could be well protected by the photoanode and photocathodic protective coating whether illumination or not, due to synergistic effect of local surface plasmonic resonance of TiN, “electron pool” of polyaniline and non-interfacial contact of TiO 2 and MXene. Moreover, the epoxy resin in the photocathodic coating could act as a kind of physical barrier in the dark environment. Additionally, results of long-term protection test indicated that the photocathodic protective coating under intermittent illumination had better protection property than that of the coating without illumination.
研究领域:
材料科学
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电化学
·
防腐蚀工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Li Jiang,Junaid Ali Syed,Yangzhi Gao,Hongbin Lu,Xiangkang Meng
In the present paper, polyaniline (PANI) coating was electropolymerized in the presence of phosphoric acid with subsequent deposition of Ni(OH) 2 particles. The Ni(OH) 2 reinforced PANI coating significantly enhances the corrosion resistance of 304 stainless steel (304SS) in comparison with the pristine PANI coating. The galvanostatically deposited Ni(OH) 2 particles fill the pores of the pristine PANI coating and improves the coatings hydrophobicity which decreases the diffusion of aggressive media. Importantly, the R p values of Ni(OH) 2 reinforced PANI coating is much higher than that of pristine PANI coating and the Ni(OH) 2 reinforced PANI coating presents a long-term anti-corrosive ability (360 h) in 3.5 wt% NaCl solution. The prolonged corrosion protection of Ni(OH) 2 reinforced PANI coating is attributed to the improved physical barrier as well as the facile formation of passive oxide film that sustain the anodic protection of the coating.
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
Journal of Oceanology and Limnology
·
2022
·Vol. 41
·期 1
·174-188
·
IF 1.554
Cao Pan,Liu De,Liu Yuhan,Wang Huming,Zhang Chao,Yuan Chengqing,Liu Xiaodan
Marine biofouling causes serious harms to surfaces of marine devices in transportation, aquaculture, and offshore construction. Traditional antifouling methods pollute the environment. A novel and green antifouling strategy was developed to prevent effectively the adhesion of bacteria and microalgae. An antifouling surface was fabricated via coating Turgencin B Mox2 (TB) onto dopamine-modified 304 stainless steel (304 SS). The surface physical and chemical properties before and after modification were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectrometer (XPS), contact angle measurement (CA), 3D optical profilometer, ellipsometer, and atomic force microscope (AFM). Antimicrobial peptide was coated onto the surface of 304 SS successfully, and the surface morphology and wettability of the modified sample were modified. Moreover, cytocompatibility of the peptide was evaluated by co-culture of peptide and cells, indicating promising cell biocompatibility at the modified sample surface. At last, antifouling performance and electrochemical corrosion were tested. Results show that the adhesion rates of Vibrio natriegens and Phaeodactylum tricornutum on the antifouling surface were reduced by 99.85% and 67.93%, respectively from those of untreated samples. Therefore, the modified samples retained superior corrosion resistance. The study provide a simply and green way against biofouling on ship hulls and marine equipment.
研究领域:
材料科学
·
海洋生物学
·
环境科学
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产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2020
·
IF 3.233
Luxia Zhang,Naiming Lin,Jiaojuan Zou,Xiuzhou Lin,Zhiqi Liu,Shuo Yuan,Yuan Yu,Zhenxia Wang,Qunfeng Zeng,Wengang Chen,Linhai Tian,Lin Qin,Ruizhen Xie,Boqiong Li,Zhihua Wang,Bin Tang,Yucheng Wu
Stainless steel (SS) has long been widely used in the outdoor environment as engineering material due to its excellent corrosion resistance. Recently it is found that super-hydrophobicity on the stainless steel surface also has significant effect on its corrosion resistance. In this work, laser surface texturing (LST) and decoration of hexadecyltrimethoxysilane (HDTMS) duplex treatment were carried out to improve the super-hydrophobicity and corrosion resistance of AISI 304 SS. Comparative appraisals of super-hydrophobicity and corrosion resistance for the related samples were conducted via wetting behavior with distilled water and electrochemical performance with simulated haze solution. The surface morphologies of ground 304 SS (G-304 SS), HDTMS + ground 304 SS (HG-304 SS), surface textured 304 SS (T-304 SS) and HDTMS + surface textured 304 SS (HT-304 SS) before and after electrochemical tests were obtained by scanning electron microscope (SEM). The results showed that micropores with different designed distances have distributed on the surfaces of 304 SS samples after LST treatment. When the micropore distance was 50 μm, this HT-304 SS exhibited a highest contact angle of 158.9°. Electrochemical experiments revealed that the HT-304 SS suggested better corrosion resistance in comparison to the G-304 SS, HG-304, and T-304 SS samples, which was mainly due to its outstanding super-hydrophobicity property.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Li Jiang,Junaid Ali Syed,Hongbin Lu,Xiangkang Meng
The enhancement in long-term corrosion resistance of conductive polymer coating is essential for the practical application, particularly to protect metallic bipolar plates in the aggressive environment of proton exchange membrane fuel cell (PEMFC). In this study, graphene oxide (GO) was introduced to polypyrrole (PPY) matrix, furthermore, PPY-GO composite coatings with different GO content were in-situ electrodeposited on 304 stainless steel (SS) bipolar plates to protect them from corrosion in the aggressive working environment. The electrochemical results imply that the conductive PPY-GO composite coatings significantly decrease the polarization current density of 304SS during potentiostatic polarization in the simulated PEMFC environment. The existence of GO in PPY matrix enhances the coatings adhesion strength and makes the diffusion pathway of corrosive species longer and more circuitous, further restricts their inward penetration. The PPY-GO coating with the optimized GO content of 1 mg mL −1 in the electrodeposition electrolyte shows the best corrosion resistance among the prepared coatings. This enhanced long-term corrosion protection of the PPY-GO composite coating in comparison with the pristine PPY coating is resulting from the enhanced physical barrier and anodic protection .
研究领域:
材料科学
·
电化学
·
燃料电池技术
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xia Wang,Linglong Xu,Hui Wang,Xiong Li,Qiao Zhang,Yue Gu
A serious of core-shell fluorine-silicon modified polyacrylic emulsion had been prepared by seeded emulsion polymerization. Methylmethacrylate (MMA), butyl acrylate (BA) and acrylic acid (AA) were used as the monomers of polyacrylic core. And the shell of the emulsion was modified by polyacrylic with dodecafluoroheptyl methacrylate (DFMA), vinyl triethoxysilane (VTEO) and tetraethyl orthosilicate (TEOS). The completed of reaction was proved by fourier transform infrared spectroscopies (FT-IR). TEM analysis indicated core-shell structure of the hybrid particles. The surface analysis indicated that the excessive addition of VTEO-TEOS had a negative effect for the film. Electrochemical Impedance Spectroscopy (EIS) indicated that the anti-corrosion of the film went up first and then down with the increase of VTEO-TEOS content. The best anti-corrosion content of VTEO-TEOS was 1.0% (F-1.0Si). In this, the corrosion current density of the coating had reached 3.7×10 -8 A·cm -2 ，the efficiency of anti-corrosion was 99.53%, the water contact angle was 99° and the thermal decomposition temperature was 298°C. Two glass transition temperature indicated that the emulsion was the structure of two phases with different properties. The high-efficiency anti-corrosion time of film within 300 h was showed with immersion experiment.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
APPLIED CLAY SCIENCE
·
2023
·
IF 5.6
Ao Jiang,Yuli Di,Shanhua Chen,Dafu Zhang,Xingyu Chen,Zhengdong Zhang,Xinyi Zhang,Qi Dong
The sol-gel method was used to prepare a series of muscovite/TiO 2 heterostructures for photocathodic protection of 304 stainless steels (304SS). The effects of different mass ratio of muscovite to TiO 2 (1:0.5, 1:1 and 1:1.5, denoted as MT-0.5, MT-1 and MT-1.5, respectively) on the crystal phase, grain size, light absorption properties and photoelectrochemical properties of TiO 2 and muscovite/TiO 2 heterostructures were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV–visible diffuse reflection spectroscopy (UV–vis DRS). The corrosion resistances and photoelectrochemical properties of the 304SS coated with muscovite/TiO 2 heterostructures (304SS/MT) were studied through corrosion immersion test and electrochemical workstation in 3.5 wt% NaCl solution, respectively. In addition, Tafel curves and the electrochemical impedance spectroscopy (EIS) measurements were carried out to evaluate the photogenerated electron separation and transfer efficiency, and the interfacial charge transfer resistance of the 304SS and 304SS/MT electrodes, respectively. The time-dependent photocurrent responses of the MT-1 heterostructures demonstrated an enhanced photo-generated cathodic protection performance for 304SS substrates under visible light irradiation compared to TiO 2 . A photoinduced potential drop value for 304SS coated with MT-1 in 3.5 wt% NaCl solution was −0.54 V (vs. SCE). After immersion test, the corrosion image analyses of the 304SS, 304SS-MT, and 304SS coated with physically mixed muscovite/TiO 2 samples showed that the 304SS/MT-1 exhibits the best corrosion resistances . After connecting with 304SS/MT-1 in 3.5 wt% NaCl solution, the corrosion current densities ( i corr ) of 304SS increased significantly under the white light illumination, indicating more photoinduced electrons were migrated from the muscovite/TiO 2 heterostructures to the 304SS compared with that from pure TiO 2 . Furthermore, the simulated charge transfer resistance ( R ct ) of 304SS/MT-1 electrode is smaller than that of the 304SS electrode coated with TiO 2 , indicating that there exists an effective separation of the photogenerated electrons and holes, and a fast interfacial charge transfer after coating muscovite/TiO 2 heterostructures.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·2149
·
IF 3.2
Qingmeng Wang,Xiuli Wang,Xiaomin Cheng,Qianju Cheng,Yi Yang
In the fields of nuclear engineering and solar thermal utilization, low melting point alloys with excellent thermal conductivity and heat transfer performance have attracted extensive research as a new generation of heat transfer fluids, leading to many fundamental and important application issues. This study investigates the high-temperature corrosion behavior of Sn-50Bi-2Zn (wt.%) heat transfer alloy against 304 stainless steel (304), 310S heat-resistant steel (310S), and 20 carbon steel (20C) at 600 °C. Theoretical analysis, based on Fick’s diffusion law, and experimental measurements reveal significant differences in corrosion severity. After 473 h, 20 carbon steel exhibited the lowest corrosion layer thickness (0.07 mm), while 310S suffered the most severe corrosion (1.50 mm), exceeding 304SS (0.83 mm) by 81%. Diffusion coefficients derived from Sn penetration depths further quantified these trends: D310S = 2.51 × 10−7mm2/s (6.8 × higher than 304: 3.7 × 10−8mm2/s) and D20C = 2.87 × 10−10mm2/s (128 × lower than 304SS). XRF analysis confirmed the dissolution of steel components into the molten alloy, with Fe, Cr, and Ni content increasing to 0.382 wt.%, 0.417 wt.%, and 0.694 wt.%, respectively, after 480 h. These results underscore the critical role of Ni content in accelerating Sn/Zn diffusion and pore formation, providing actionable insights for material selection in high-temperature heat transfer systems.
研究领域:
材料科学
·
核工程
·
热能工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiahuan Cao,Yujia Wu,Yinghuan Fu,Yu Song,Guowen Wang,Hongchao Ma
Photocathodic protection is a promotion strategy for the corrosion protection of metallic materials, and the selection of photocathodic materials is a critical factor in improving the performance of photocathodic protection of metallic materials. Herein, a Ti-P-V-O composite semiconductor photoelectrode with an adjustable porous structure was prepared by the micro-arc oxidation (MAO) method using titanium alloy (TC 4 ) as the matrix and ammonium metavanadate (NH 4 VO 3 ) as the additive. The photogenerated open circuit potential, instantaneous photocurrent density response value, electrochemical impedance spectroscopy, and Tafel curve of as-prepared Ti-P-V-O photo-electrodes were measured after coupling with 304SS to clarify the cathodic protection effect for 304 stainless steel (304SS). It is found that the as-prepared Ti-P-V-O coating photoelectrode has a more negative open circuit potential, a more significant photocurrent density response, more effective interface carrier transport ability, lower resistance, lower compounding efficiency of photogenerated electron/hole pairs, and more negative conduction band level, as compared with that of TiO 2 coatings. Moreover, the optimized Ti-P-V-O photoelectrode (Ti-P-V-O&300 V) exhibited the maximum negative shift of the corrosion potential (410 mV vs. SCE) for coupling with 304 stainless steel. This work presents a new strategy for constructing an efficient coating photo-electrode for photocathodic protection of metallic materials.
研究领域:
材料科学
·
电化学
·
腐蚀防护
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shouwu Xu,Zhilong Zhang,Hailin Zhang,Zhiwei Li,Haoping Peng,Sibudjing Kawi,Aijun Xie,Ping Qiu
The development of a photoelectrochemical cathodic protection film with electron storage capabilities offers a feasible method for metal protection in the absence of light. In this study, we designed and fabricated an innovative TiO 2 /ZIF-67 composite film in situ. The synthesized ZIF-67 nanoparticles with a dodecahedral structure not only facilitate contact with the electrolyte but also significantly broaden the sunlight absorption range. When coupled with 304 SS, the TiO 2 /ZIF-67-20 composite film demonstrated a minimum OCP value of −0.675 V (vs. SCE) under illumination. Notably, even after 10 h of light deprivation, the OCP remained lower than that of 304 SS. This sustained protection can be attributed to the electronic storage and release capabilities of the Co element within the TiO 2 /ZIF-67 composite, ensuring continuous cathodic protection for 304 SS during both illuminated and dark conditions. This study contributes valuable insights into achieving all-weather cathodic protection for 304 SS.
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
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Min Sun,Zhidong Ma,Anhang Li,Guiyu Zhu,Yue Zhang
In this paper, polyaniline (PANI) was used as anticorrosive filler and waterborne epoxy resin (EP) as film-forming material to prepare anticorrosive coatings on 304 stainless steel. Poly(methylhydrosiloxane) (PMHS) with low surface energy and divinylbenzene (DVB) as crosslinking agent were used to modify the coatings. FT-IR proved the successful preparation of Polyaniline and composite coatings. The micro-morphology and surface state of the coatings were studied by scanning electron microscopy (SEM) and contact angle measuring instrument (CA). Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to evaluate the corrosion resistance of different coatings in 3.5 wt% NaCl solution. The surface of the composite coatings after surface modification became hydrophobic (CA = 98°), compact and uniform, and the anti-corrosion performance significantly improved. Compared with bare sheets, the |Z| 0.01Hz of the composite coatings had been increased by more than three orders of magnitude, and the corrosion current density had been reduced by five orders of magnitude. Long-term immersion test showed that the coating was able to provide effective protection to the substrate for about 140 days.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Li Jiang,Junaid Ali Syed,Yangzhi Gao,Qiuxiang Zhang,Junfeng Zhao,Hongbin Lu,Xiangkang Meng
Conductive polymer coating doped with large molecular organic acid is an alternative method used to protect stainless steel (SS) bipolar plates in proton exchange membrane fuel cells (PEMFCs). However, it is difficult to select the proper doping acid, which improves the corrosion resistance of the coating without affecting its conductivity. In this study, large spatial molecular group camphorsulfonic acid (CSA) doped polypyrrole (PPY) conductive coating was prepared by galvanostatic electropolymerization on 304SS. The electrochemical properties of the coating were evaluated in 0.1 M H 2 SO 4 solution in order to simulate the PEMFC service environment. The results indicate that the coating increased the corrosion potential and shifted E corr towards more positive value, particularly the j corr value of PPY-CSA coated 304SS was dropped from 97.3 to 0.00187 μA cm −2 . The long-term immersion tests (660 h) show that the PPY-CSA coating exhibits better corrosion resistance in comparison with the small acid (SO 4 2− ) doped PPY-SO 4 2− or PPY/PPY-SO 4 2− coatings. Moreover, the PPY-CSA coating presents low contact resistance and maintains strong corrosion resistance during the prolonged exposure time due to barrier effect and anodic protection.
研究领域:
材料科学
·
电化学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）