6 results on '"Hu, Wenbin"'
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2. Preparation, anticorrosion and antifouling behavior of halloysite-loaded nanocomposite with CAP and BTA.
- Author
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Diao, Yaqi, Wang, Jihui, Song, Renhong, Fei, Xue, Xue, Zhichang, and Hu, Wenbin
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FOURIER transform infrared spectroscopy ,X-ray photoelectron spectroscopy ,SEAWATER corrosion ,CORROSION resistance ,ULTRAVIOLET spectrophotometry - Abstract
Purpose: The purpose of this paper is to prepare a multifunctional nanocomposite that is slow-release and resistant to seawater corrosion and biofouling corrosion and to explore the synergistic effect between the two corrosion inhibitors. Design/methodology/approach: The morphology, structure and release properties of CAP@HNTs, BTA@HNTs and CAP/BTA@HNTs were investigated by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, specific surface area analysis and UV spectrophotometry. The corrosion resistance and antimicrobial properties were investigated by electrochemical measurements and bioinhibition rate tests, and the synergistic effect between the two corrosion inhibitors was explored by X-ray photoelectron spectroscopy. Findings: The CAP/BTA@HNTs are responsive to acidic environments and have significantly improved antibacterial and corrosion resistance compared with CAP@HNTs and BTA@HNTs. CAP and BTA have a positive synergistic effect on anticorrosion and antifouling. Originality/value: Two types of inhibitors, anticorrosion and antifouling, were loaded into the same nanocontainer to prepare a slow-releasable and multifunctional nanocomposite with higher resistance to seawater corrosion and biocorrosion and to explore the synergistic effect of CAP and BTA on corrosion resistance. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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3. Effect of nano-Al2O3 particle addition on Co–P–xAl2O3 nanocomposite plating electroplated on X65 steel.
- Author
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Liang, Guangwei, Gao, Zhiming, Deng, Cheng-Man, and Hu, Wenbin
- Subjects
X-ray photoelectron spectroscopy ,PLATING baths ,ATOMIC force microscopy ,NANOCOMPOSITE materials ,ELECTROPLATING ,ALUMINUM composites - Abstract
Purpose: The purpose of this study is to reveal the effect of nano-Al
2 O3 particle addition on the nucleation/growth kinetics, microhardness, wear resistance and corrosion resistance of Co–P–xAl2 O3 nanocomposite plating. Design/methodology/approach: The kinetics and properties of Co–P–xAl2 O3 nanocomposite plating prepared by electroplating were investigated by electrochemical measurements, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Vickers microhardness measurement, SRV5 friction and wear tester and atomic force microscopy. Findings: A 12 g/L nano-Al2 O3 addition in the plating solution can transform the nucleation/growth kinetics of the plating from the 3D progressive model to the 3D instantaneous model. The microhardness of the plating increased with the increase of nano-Al2 O3 content in plating. The wear resistance of the plating did not adhere strictly to Archard's law. An even and denser corrosion product film was generated due to the finer grains, with a high corrosion resistance. Originality/value: The effect of different nano-Al2 O3 addition on the nucleation/growth kinetics and properties of Co–P–xAl2 O3 nanocomposite plating was investigated, and an anticorrosion mechanism of Co–P–xAl2 O3 nanocomposite plating was proposed. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
4. Effect of substrate orientations on the electrochemical and localized corrosion behavior of a quad-layer Al alloy composite.
- Author
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Wang, Mingyang, Ji, Yuanyuan, Xia, Da-Hai, Zhou, Dejing, Zhu, Yesen, Gao, Zhiming, Qin, Zhenbo, and Hu, Wenbin
- Subjects
ALLOYS ,CORROSION resistance ,IMPEDANCE spectroscopy ,ELECTROLYTIC corrosion ,ANODES - Abstract
• Electrochemical and localized corrosion behavior of a 4045/7072/3003 M/4045 Al alloy composite in NaCl solution was investigated. • Plane directions showed higher corrosion resistance than the cross-sectional surface. • The cross-section showed a complex galvanic effect among the four layers, and the galvanic coupling between 4045/7072 accelerated the dissolution of 4045. Electrochemical and localized corrosion behavior of a 4045/7072/3003 M/4045 Al alloy composite in 3.5 wt.% NaCl solution was investigated from cross-sectional and plane directions by electrochemical impedance spectroscopy, polarization curves, and high-resolution microscopic examination. Plane directions showed higher corrosion resistance than the cross-sectional surface, with almost all localized corrosion initiated from Si-containing inclusions. The cross-section showed a complex galvanic effect among the four layers, the galvanic coupling between 4045/7072 accelerated the dissolution of 7072 because 7072 served as the anode, however, the galvanic coupling between 3003 M/4045 protected 4045 from corrosion, indicating that 3003 M served as the anode. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Enhancement of corrosion resistance and superparamagnetic property by structural modulation in (Co-DLC)/DLC multilayered nanocomposite films.
- Author
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Zhang, Yiwen, Luo, Junpeng, Wu, Zhong, Qin, Zhenbo, Ji, Huiming, Liu, Xinjun, Zeng, Haodong, and Hu, Wenbin
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DIAMOND-like carbon , *CORROSION resistance , *REMANENCE , *NANOCOMPOSITE materials , *MAGNETIC films , *MAGNETIC properties , *MAGNETRON sputtering - Abstract
A structure of {[(Co-DLC)/DLC] X } n Multilayered Nanocomposite Films (MNF) is designed by inserting pure DLC high-resistance layers into Co-DLC nanocomposite film, which consists of alternating Co-DLC and DLC layers were prepared by magnetron sputtering. The electrochemical behavior and magnetic property of the films are modulated by varying the number of deposition cycles (n) and the thickness of one single-cycle (X). The electrochemical results show that this MNF structure significantly improves the corrosion resistance of the films owing to the clear interfaces, which block the micropores penetrating the films. Compared to the co-sputtering film, as the number of cycles n increases to 7, the corrosion resistance is enhanced by one order of magnitude from 2.3 × 104 to 2.2 × 105 Ω·cm2. However, the interfaces between the Co-DLC and DLC layer become blurred when the thickness of one single-cycle X is lower than 30 nm, and the corrosion resistance decreases to 3.7 × 104 Ω·cm2. In terms of magnetism, the multilayer structure helps to regulate the homogeneity of Co particle size. As X increases from 30 to 100 nm, the Co particle size increases from 2.7 to 4.7 nm, and the saturation magnetization intensity (M s) of superparamagnetic property in the films increases from 2.8 to 8.2 mT. As X increases, the remanent magnetization ratio (M r / M s) decreases and reaches 0.011 at X = 100 nm, which is about one order of magnitude smaller than that of the co-sputtering film. This result indicates that the MNF have better superparamagnetic property. It is noteworthy that {[(Co-DLC)/DLC] X } n MNF with X ranging from 100 to 40 nm and n ranging from 3 to 7 can achieve high corrosion resistance and superparamagnetic property, simultaneously. • {[(Co-DLC)/DLC] X } n multilayered nanocomposite films (MNF) are constructed. • Micropores are blocked by multilayer interfaces to improve corrosion resistance. • High anticorrosion and superparamagnetic property are achieved, simultaneously. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Preparation of ZnO resistive switching film and its corrosion behavior in 3.5 wt.% NaCl solution.
- Author
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Xue, Fei, Wang, Jihui, Hou, Yutong, and Hu, Wenbin
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ZINC oxide , *DIFFUSION barriers , *ZINC oxide films , *CORROSION resistance , *SALT , *HEAT treatment - Abstract
[Display omitted] • ZnO resistive switching film is prepared by one-step hydrothermal method. • Application of electric field can promote the formation of oxygen-vacancy in film. • High-low resistive switching behavior of film varies with oxygen vacancy content. ZnO resistive switching films were prepared on the surface of SS304 using hydrothermal method combined with heat treatment. The surface and cross-sectional morphology, composition, oxygen vacancy content and semiconductor type of ZnO films were characterized. The corrosion resistance and resistance switching properties of ZnO films were determined by electrochemical methods. The oxygen vacancy formation energy, surface adsorption energy and diffusion barrier of ZnO system were calculated using first-principles. The results show that the samples with 0.5 mol/L Zn2+ and 4 mol/L NaOH have the best performance, and its corrosion resistance efficiency can reach more than 99.5 %. Calculations show that the ZnO film containing oxygen vacancies still prevents the entry of Cl−, and applied electric field promotes the formation of oxygen vacancies and conductive filaments. Thus, polarization-immersion treatment can adjust the oxygen vacancy content in film, which enables film to switch between high and low resistance states, realizing the cyclic resistance-switching performance of film and greatly extending service life. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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