JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2022
·Vol. 26
·期 3
·791-798
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IF 2.747
Zhao Meiyu,Du Pin,Liu Wei,Du Kaifa,Ma Yongsong,Yin Huayi,Wang Dihua
Making a tantalum carbide (TaC) coating on Ta substrates is an effective way to improve the mechanical and anti-corrosion properties of Ta. However, conventional methods for making a TaC coating require high-temperature conditions of over 1600 °C to get a TaC thickness of > 20 μm. Herein, a TaC coating of > 20 μm thickness was prepared on a Ta substrate in molten CaCl 2 -CaC 2 at 850 °C for 4 h. In the molten salt electrolyzer, the Ta plate served as the anode where C 2 2− was oxidized and simultaneously reacted with Ta to form a TaC layer, and Ca 2+ was reduced and alloyed with C to form CaC 2 that can replenish the C 2 2− . The electrolytic TaC exhibited an average hardness of 962 HV that was 6 times of the bare Ta substrate. In the 3.5 wt% NaCl solution, the TaC coating displayed a higher corrosion potential and lower corrosion current density (0.48 V, 1.59 μA cm −2 ) than Ta substrate (0.35 V, 1.85 μA cm −2 ) and the mixtures of TaC and Ta 2 C (0.35 V, 1.78 μA cm −2 ), indicating its better corrosion resistance. The molten salt anodic carbidation may lead to a general way to prepare transition metal carbide coatings with enhanced carburizing kinetics at < 1000 °C. Graphical abstract
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2019
·Vol. 9
·期 12
·867
·
IF 2.33
Diping Zeng,Zhiyi Liu,Song Bai,Jian Wang
In the present work, a coating was prepared on an Al alloy substrate by plasma electrolytic oxidation (PEO). To seal the micro defects in the oxide scale, a siloxane layer was prepared on the PEO coating by sol gel method. The polymer sealant was synthesized from Tetraethoxy silane (TEOS) and methacryloxy propyl trimethoxyl silane (MPTES). The chemical structure of the polymer was studied by Fourier transform infrared spectroscopy (FTIR). The morphologies and microstructure of the PEO coating and siloxane coating were investigated by scanning electron microscopy (SEM). The results showed that siloxane formed a continuous layer on the surface and effectively sealed the micro defects. The corrosion behavior of the coatings in three different corrosion solutions (NaCl, HCl, and NaOH) was examined by electrochemical impedance spectroscopy and potentiodynamic polarization. The corrosion resistance of the sealed coatings was superior to that of the PEO coating because it prevented the penetration of corrosive solutions. The corrosion resistance of the sealed coatings was found to decrease with increasing electrolyte concentration. The work demonstrated that siloxane sealing may greatly enhance the corrosion resistance of Al-based PEO coating in acidic, neutral, and alkaline environments.Keywords:PEO coating;silane polymer;sealing treatment;corrosion resistance
研究领域:
材料科学
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腐蚀工程
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表面工程
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 11
·4295-4305
·
IF 8.1
Rong Xudong,Li Yue,Chen Xiaofeng,Zhang Xiang,Zhao Dongdong,He Chunnian,Zhao Naiqin
Incorporating reinforcements can improve the mechanical properties of Al matrix composites but make them susceptible to corrosion attacks by facilitating the formation of a galvanic cell network along the interface. The optimization of the interfacial structure improves the corrosion resistance of the composites. Herein, a solid-state thermite reaction integrated with a heat treatment strategy was developed to create plain interfaces, encompassing the grain boundary (GB) and reinforcement–matrix interface, in an Al–CuO composite system. The intergranular corrosion behavior and susceptibility to stress corrosion cracking of the composite were comprehensively examined by immersion/electrochemical corrosion tests and microstructural characterizations. The intragranular distribution of nanosized secondary phases, i.e., Al 2 O 3 and precipitates, was investigated to address their contribution to the continuous galvanic cell detachment along the GBs and interruption of the corrosion path, thus boosting the corrosion duration. In addition, the tightly bonded Al 2 O 3 –Al interface with low strain energy distinctly lowers local susceptibility to corrosion. This study illuminates the correlation between interface characteristics and corrosion mechanisms in the composites, which can shed light on the development of high-corrosion-resistant composites.
研究领域:
材料科学
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腐蚀工程
·
复合材料
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Yumiao Jiang,Shuai Gao,Yingxue Liu,Huijie Huangfu,Xugeng Guo,Jinglai Zhang
Fabricating layered double hydroxides (LDHs) coatings intercalated with corrosion inhibitors is considered an effective strategy for improving the corrosion resistance of metal substrates. However, to our best knowledge, studies applying LDHs coatings modified with ionic liquids (ILs) as environmentally friendly corrosion inhibitors to corrosion protection of metals and alloys have not been reported. In this contribution, two kinds of MgAl-LDHs coatings modified with imidazolium based dicationic ILs, namely LDH-C 6 (m 2 im) 2 -I and IL@LDH-C 6 (m 2 im) 2 -I, were successfully prepared on AZ31B magnesium alloy . The LDH-C 6 (m 2 im) 2 -I coating intercalated with C 6 (m 2 im) 2 -I ionic liquid was synthesized by the co-precipitation method and hydrothermal treatment , followed by a facile immersion experiment in a dimethyl sulfoxide solution containing C 6 (m 2 im) 2 -PF 6 ionic liquid to produce the IL@LDH-C 6 (m 2 im) 2 -I composite coating . The surface morphologies and anti-corrosion properties of the two MgAl-LDHs coatings immersed in 3.5 wt% NaCl solution were investigated. The present results reveal that the LDH-C 6 (m 2 im) 2 -I coating exhibits a uniform and dense petal-like nanoflowers structure, while the IL@LDH-C 6 (m 2 im) 2 -I composite coating contains a compact C 6 (m 2 im) 2 -PF 6 IL film and a lamellar-structured LDH-C 6 (m 2 im) 2 -I, which provides a double corrosion protection to the Mg alloy. As a result, the corrosion current density of IL@LDH-C 6 (m 2 im) 2 -I is only thirty-eighth of that of LDH-C 6 (m 2 im) 2 -I and 4 orders of magnitude lower than that of bare AZ31B Mg alloy. More importantly, the surface of samples coated with IL@LDH-C 6 (m 2 im) 2 -I is still compact without being destroyed after 168 h of immersion, which can be ascribed to the synergistic effect of excellent self-healing and durable corrosion resistance. This work opens a new way of preparing MgAl-LDHs coatings modified with ionic liquids to remarkably enhance the anti-corrosion performance of Mg alloys.
研究领域:
材料科学
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腐蚀工程
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表面工程
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Hanlin Shao,Yibo Cao,Zhihao Chen,Wei Ding,Xiaoshuang Yin,Yun Chen,Ying Liu,Wenzhong Yang
The agglomeration of polyaniline (PANI) nanofillers in waterborne resins substantially reduces the long-term corrosion resistance of the resins. In this study, we use gum arabic (GA), a biological macromolecule, as a green stabilizer to prepare aqueous dispersions of GA–PANI nanofillers via chemical oxidative polymerization. The highly dispersed GA–PANI nanofillers are incorporated into waterborne epoxy (WEP) matrix and sprayed onto Q235 steel surface. The results show that the GA–PANI nanofillers exhibit excellent dispersion, stability, and compatibility in WEP, as evidenced through transmission electron microscopy and scanning electron microscopy of the cross-sectional morphology, water-absorption tests, and coating adhesion tests. An electrochemical test indicates that the 3.0 wt % GA–PANI/WEP coating displays remarkable corrosion resistance, with the value of impedance modulus in the low-frequency region (|Z|0.01Hz) remaining at 3.372 × 107 Ω cm2 after 60 days of immersion in a 3.5 wt % NaCl solution. This value is almost 1 order of magnitude higher than that of WEP. An X-ray photoelectron spectroscopy test confirms the presence of a corrosion product component on the coating/steel interface. Moreover, the GA–PANI nanofillers extend the penetration route of corrosive species and provide favorable adhesion and anodic protection.
研究领域:
材料科学
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化学工程
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涂层技术
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腐蚀科学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2022
·
IF 3.985
Feng Yashan,Chang Lei,Zhu Shijie,Yang Yongxin,Wei Baoli,Lv Meng,Wang Jun,Guan Shaokang
The uncontrollable rapid degradation rate of the Mg alloy substrate limited its clinical application, and implant-associated infections have been reported to be the main reason for the secondary surgery of orthopedic implantation. The aim of this study was to produce a multifunctional coating on magnesium-based alloys that have improved corrosion resistance, bioactivity, and antibacterial properties through the preparation of polyelectrolytic multilayers (PEMs) consisting of chitosan (CS) and sodium hyaluronate (HA) on silane-modified strontium-substituted hydroxyapatite (hereafter referred to as Bil (SH + CS)/SrHA). The multifunctional coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results showed the polyelectrolyte complex SH/CS layer to be uniformly and tightly attached on to the surface of silane-treated SrHA. At the same time, a potentiodynamic polarization test and hydrogen evolution test showed the Bil (SH + CS)/SrHA coatings to exhibit superior corrosion resistance than bulk Mg-based alloys. The results of the cell–surface interactions revealed Bil (SH + CS)/SrHA coatings to be in favor of cell initial adhesion and more beneficial to the proliferation and growth of cells with the processing of co-culture. In addition, antibacterial tests demonstrated the strong bactericidal effect of Bil (SH + CS)/SrHA coatings against both Escherichia coli (E. coli) and Staphylococcus (S. aureus), suggesting that Bil (SH + CS)/SrHA coatings can successfully achieve multifunctionality with enhanced corrosion resistance, biocompatibility, and antibacterial properties.
研究领域:
材料科学
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生物医学工程
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组织工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Zhiqiang Wang,Yi Wang,Xu Zhou,Yaru Sun,Dezhou Guo,Jinjiang Xu
The enhancement of energy release and safety performance is of great significance to the energetic crystal 3-nitro-1,2,4-triazol-5-one (NTO). However, the practical utilization of NTO has been hindered by several critical challenges, including slow energy release kinetics, high decomposition temperatures, and poor safety performance. The physical cross-linked network polyelectrolyte κ-carrageenan (KC)/chitosan (CTS)/NTO composites were prepared by acidified sol-gel conversion method to improve the physical and chemical properties and performance characteristics of NTO. Through the characterization and analysis of the morphology and structure of the samples, it was observed that the KC/CTS/NTO composites did not undergo polymorphic transformation during the preparation process. At the same time, the experimental data reveal that the physically crosslinked polymeric matrix spontaneously assembled by KC and CTS effectively lowers the onset thermal decomposition temperature and activation energy of NTO, while concurrently enhancing its energy release kinetics. Notably, KC and CTS exhibit a dual-action mechanism: synergistically mitigating NTO's corrosive properties and elevating its insensitivity threshold, thereby establishing excellent safety performance. These findings collectively validate the potential of this synergistic composite strategy for broader applications in advanced energetic material systems.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingjin Xue,Tingzhe Wang,Zewen Wu,Hao Liu,Shunbao Hu,Bingtao Bao,Aihua Tang,Yiting Xu,Weiang Luo,Guorong Chen,Birong Zeng,Conghui Yuan,Lizong Dai
Preparing multifunctional epoxy resin composites with excellent flame retardancy and long-lasting anti-corrosion properties has always been a huge challenge. In this study, we used o -vanillin-based ZIFs to coat multilayered MXene nanosheets in situ to obtain MXene@ZIF nanohybrid materials and subsequently prepared epoxy composites with excellent flame-retardant properties, long-lasting corrosion-resistant properties, and excellent mechanical properties. It was shown that in situ capping with o -vanillin-based ZIFs significantly enhanced the defects of MXene lamellae and improved their dispersion in the matrix. When the MXene@ZIF content was only 3 wt%, the limiting oxygen index (LOI) of EP/MXene@ZIF increased to 28.6 %, and compared with pure EP, its total heat release and total smoke release were reduced by 32.2 % and 16.2 %, respectively. Electrochemical impedance spectroscopy (EIS) and salt spray testing showed that the epoxy composite coating incorporating MXene@ZIF nanosheets had excellent long-term anti-corrosion properties. Even after soaking in 3.5 % NaCl solution for 2400 h, the epoxy composite coating still maintained an impedance value of 1.47 × 10 8 Ω cm 2 . In addition, the mechanical properties of EP/MXene@ZIF were also significantly enhanced. All in all, this study provides a multifunctional modification strategy for epoxy resin via a single filler, expanding the application prospects of epoxy resin composites in different fields.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Liu Shaojia,Deng Jingjing,Zhao Hewei,Wang Tianbai,Lu Junfeng,Ding Baosen,Guo Tianqi,Ritchie Robert O.,Guo Lin
Stiffness-damping balance, high specific mechanical performance, and corrosion resistance are demanded for metals. Here, we developed an enamel-inspired ceramic (EIC) coating strategy involving hydrothermal growth of a tooth enamel-like ZrO₂ nanorods on Zr foil and amorphous ZrO₂ intergranular phase formation via controlled hydrolysis. The EIC coated Zr foil (Zr-EIC) achieved a high viscoelastic figure of merit (4.6 GPa); as well as excellent specific stiffness and hardness owing to the lightweight of ceramics, surpassing the values of Zr and previously reported Zr-based alloys or Zr-based composites. This was due to the vertically oriented stiff nanorods and unique energy dissipation derived from deformation at the crystalline/amorphous interfaces. It demonstrated exceptional NaCl corrosion resistance. This approach showed universality across Ti, Zn, and Cu substrates, enhancing both mechanical properties and corrosion resistance. By constructing an enamel-like hierarchical structure on the metal surface, the strategy overcomes traditional metal limitations without causing an increase in density.
研究领域:
材料科学
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表面工程
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纳米技术
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金属学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Metallurgica Sinica-English Letters
·
2024
·
IF 2.9
Zeng Yanwei,Xu Peng,Liu Guoqiang,Wang Tianguan,Lei Bing,Feng Zhiyuan,Zhang Ping,Meng Guozhe
Chloride-induced corrosion of steel reinforcement is the key factor leading to the degradation of reinforced concrete building durability. Improving the corrosion resistance of oxide scale of rebar has always been a research hotspot in the field of civil engineering materials. A ZIF-8 modified Ce–Sol–gel (ZCS) film was prepared on oxide scale of plain steel rebars by sol–gel method. It is observed that the | Z | 0.01 Hz value of the ZCS film reached 320 kΩ cm 2 , which is about 29 times higher than that of blank rebar in simulated concrete pore (SCP) solution with 0.1 M NaCl. Then, they were inserted into mortar block and curing them in a curing box at T = 20 ± 2 °C and RH = 95 ± 2% for 28 days. Subsequently, these samples were subject to electrochemical impedance spectroscopy in 3.5 wt% NaCl. The | Z | 0.01 Hz value of the rebar with the ZCS film was six times higher than that of the blank rebar after immersing for 20 days, resulting in an overall increase in corrosion resistance for rebar. The results indicated that the modification by ZIF-8 could reduce the porosity of Ce–sol–gel (CS) film and improved the “labyrinth effect” of the film. Additionally, the negative charge on the surface of ZIF-8 in alkaline condition increased the repulsion effect with Cl − , significantly reducing the sensitivity of rebar to Cl − .
研究领域:
土木工程材料
·
防腐蚀技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2012
·
IF 2.2
Changjin Li,Yanmin Wang,Zhidong Pan
Electroless Ni–P–Al 2 O 3 nanocomposite coatings were deposited on steel surface from a plating solution with alumina (α-Al 2 O 3 ) nano-particles prepared by mechanical milling in a high energy density ceramic stirred bead mill. The size and specific surface area of the nano-sized alumina particles were determined by acoustic particle sizer and nitrogen adsorption surface area analyzer. The phase structure, morphology and elemental composition of Ni–P–Al 2 O 3 nano-composite coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. Effect of the nanoparticle concentration in the plating bath on the micro-hardness, wear resistance and corrosion resistance of the as-deposited and the heat-treated coatings was investigated. The results show that the incorporation of alumina nanoparticles can enhance the micro-hardness and wear resistance of electroless Ni–P–Al 2 O 3 nanocomposite coatings, but affect the corrosion resistance.
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 Materials Research and Technology-JMR&T
·
2021
·
IF 5.039
Bing Liu,Chun-miao Du,Yong-zhen Zheng,Gui-yong Xiao,Chuan-zhong Chen,Yu-peng Lu
The effect of nano-scaled Si 3 N 4 particles on the microstructure, mechanical and electrochemical behavior of hopeite (Zn 3 (PO 4 ) 2 ·4H 2 O) conversion coating on pure titanium was investigated. Different concentrations of nanoparticles were dispersed into the phosphating bath to incorporate the process of coating deposition. The XRD results demonstrated that nano-Si 3 N 4 were doped into the coatings without any decomposition or reaction with the hopeite phase. A finer and denser microstructure of the composite coating could be obtained at the addition of 0.5 g/L Si 3 N 4 in comparison with the pure hopeite coating. Moreover, the composite coating presented a higher bonding strength and corrosion resistance related to the refinement of microstructure and filling of the embedded nanoparticles. It is suggested that the incorporation of nano-Si 3 N 4 particles in conversion coating is a promising approach for performance optimization.
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
危险品化学品经营许可证（带存储）