JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Baosong Li,Xiao Li,Yuxing Huan,Wenzhe Xia,Weiwei Zhang
Influences of alumina nanoparticles on the microstructure and properties of Ni-B nanocomposite coating prepared by electro-co-deposition were studied. The effects of Al 2 O 3 nanoparticles, current density and electrodeposition time on microstructure, corrosion resistance , hardness and surface electronic state of Ni-B nanocomposite coating were revealed by SEM, EDX , XRD , XPS and electrochemical methods. The results demonstrate that the inclusion of Al 2 O 3 nanoparticles in Ni-B coating could improve the hardness and wear resistance accompanied with the grain refinement of the composite matrix . The incorporation of Al 2 O 3 nanoparticles alters the crystal orientation and then the microstructure of the Ni-B matrix. This enhances the corrosion resistance of Ni-B/Al 2 O 3 which is attributed to the compact structure and the reduction in the active surface area. XPS spectra indicate that the coating contains Ni, B, Al, N, O, and C. Under the influence of the grain refinement, hardening of the nanoparticles and the reduction in the active surface area, Ni-B/Al 2 O 3 composite coating exhibits excellent corrosion resistance and hardness.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2021
·Vol. 25
·期 5
·1541-1553
·
IF 2.647
Zeng Laiyuan,Wei Xuefeng,Miao Juan,Zhang Ruichang,Zhang Jun,Zhou Ming,Lu Weiwei
A Sb-doped SnO 2 anode modified with Ni and B was fabricated by the sol–gel method. The effect of major operation parameters of electrode preparation, such as Ni content, B content, and calcination temperature, on the mineralization degree of phenol was investigated. Response surface methodology was used to optimize the experimental conditions and evaluate the association between various operation parameters. The morphology, crystal structure, and electrocatalytic performance of the prepared SnO 2 –Sb–Ni–B anodes were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), linear sweep voltammetry (LSV), and cyclic voltammetry (CV). The optimized sol–gel preparation ratio of citric acid, ethylene glycol, tin tetrachloride, antimony trichloride, nickel chloride, and boric acid was 650:200:100:6.5:0.5:2, and the calcination temperature of the electrode was 550 °C. The SnO 2 –Sb–Ni–B anode has the highest oxygen evolution potential of 1.63 V (vs. Hg 2 /Hg 2 SO 4 ). The removal degree of phenol reached 58% within 2 h on the SnO 2 –Sb–Ni–B anode. The accelerated lifetime of the selected SnO 2 –Ni–B anode was 720 min, which was carried out in a 3-mol/L sulfuric acid solution with a current density of 500 mA/cm 2 .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Zi Jun Gao,Zhou Peng Li,Bin Hong Liu
In this work, we synthesized La-incorporated Ni-B amorphous composites and investigated their effects on enhancing dehydrogenation/hydrogenation properties of MgH 2 . MgH 2 with 5 wt% 2La-3Ni-B demonstrated significantly improved dehydriding kinetics. About 6.0 wt% hydrogen could be released within 5 min at 300 °C. Moreover, no decrease in deydrogenation rate was observed within ten cycles. XRD , XPS , SEM and HRTEM examinations revealed that the La incorporation into Ni-B resulted in an amorphous La-B-O structure that could keep its disorder state up to 600 °C. The crystallization and growth of Ni dispersed in the La-B-O structure was significantly retarded. Also the alloying of Mg with Ni or La was not observed. As a result, the added La-Ni-B composites showed higher structural and catalytic stability than Ni-B during hydriding/dehydriding cycling of MgH 2 at high temperatures.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Qing Yuan,Liping Yan,Yi He,Shijun Xu,Yi Sun,Han Liu,Xiangshan Hou,Huilian Zhou,Xianmin Gong
In this paper, Ni-B alloy coatings were prepared by electroless deposition, similarly, Ni-B/TiC composite coatings with TiC nanoceramic particles as the reinforcing phase were also prepared. On this basis, the composite coating was superhydrophobically modified using hexadecylmethoxysilane (HDTMS) to obtain HDTMS-modified superhydrophobic Ni-B/TiC composite coating (HDTMS* Ni-B/TiC). The hardness of the superhydrophobic coating is up to 954.9 HV, and the wettability test shows that the superhydrophobic composite coating has a water contact angle of 151.2°, and the rolling angle less than 10°. Furthermore, which maintains good non-wettability to several common household stains, in addition to good self-cleaning performance to common household dust. Electrochemical tests show that the corrosion inhibition rate of HDTMS*Ni-B/TiC superhydrophobic composite coatings reach 99.67 % and an impedance value of 3.107 × 10 5 Ω·cm −2 in 3.5 wt% NaCl solution at room temperature. Overall, the prepared superhydrophobic composite coatings have good hydrophobicity, corrosion resistance, and high hardness, which are of extensive research value.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Liping Yan,Siming Yan,Yi He,Yi Fan,Xinyu Cheng,Huilian Zhou,Jiamin Zhong,Zhiyuan Li,Jinxue Song,Hongjie Li
In this study, propylamine and ethylenediamine intercalated α-ZrP nanocomposites (denoted by P-α-ZrP and E-α-ZrP, respectively) were synthesized. The effects of propylamine and ethylenediamine intercalated α-ZrP nanocomposites and their reinforcements on the corrosion resistance and mechanical properties of Ni-B coatings were investigated and compared. The morphology and structure of the three composites were characterized using transmission electron microscopy, atomic force microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, infrared spectroscopy, thermogravimetric analysis, and particle size analysis. Both propylamine and ethylenediamine intercalation increase the layer spacing of α-ZrP, but do not change the lamellar structure of α-ZrP. The EIS test results show that both Ni-B/P-α-ZrP and Ni-B/E-α-ZrP composite coatings have significantly lower corrosion rates than Ni-B and Ni-B/α-ZrP composite coatings. Compared to Ni-B/α-ZrP, the corrosion rates are reduced by 32 % and 76 % respectively. The R ct values for Ni-B/P-α-ZrP and Ni-B/E-α-ZrP composite coatings are also distinctly higher than Ni-B/α-ZrP, with Ni-B/E-α-ZrP having the highest values. In addition, Ni-B/P-α-ZrP and Ni-B/E-α-ZrP composite coatings are both harder than Ni-B/α-ZrP and have lower average coefficients of friction and wear rates than Ni-B/α-aZrP. Among them, the Ni-B/E-α-ZrP composite coating has the highest microhardness (1163.64 ± 21.20 HV) and the best wear resistance. The wear rate is reduced by 87 % and 65 % compared to Ni-B and Ni-B/α-ZrP composite coatings respectively. In conclusion, both P-α-ZrP and E-α-ZrP are better than α-ZrP in terms of enhancement, with E-α-ZrP being the best.
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
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Yihan Zhang,Shihong Zhang,Yi He,Hongjie Li,Teng He,Yi Fan,Huili Zhang
Ni-B/B 4 C composite coatings on N80 steel were achieved by pulsed electrodeposition (PED). The optimal condition for obtaining composite coating is investigated via studying the effects of different content B 4 C on the performance of Ni-B/B 4 C coatings, including the surface morphology , microstructure, hardness and electrochemical properties . Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and energy dispersive spectrometer (EDS) were used to analyze the surface morphology, crystal morphology and element type and content of the composite coatings. The hardness of coatings was investigated by micro-hardness test. The electrochemical properties of coatings were demonstrated by electrochemical impedance spectroscopy (EIS) and scanning electrochemical microscope (SECM). Results show that the grain was uniformly deposited on the surface of N80 steel, and no pinholes and microcracks were captured. Besides, the average Vickers hardness of the Ni-B/B 4 C was the highest (1030.61 HV), and the average coefficient of friction (COF) is 0.22 (the average COF of Ni-B is 0.49). In 3.5 w % NaCl solution, Ni-B/B 4 C (2 g L −1 ) exhibits good corrosion resistance , with a corrosion voltage of − 0.30 − 0.010 + 0.010 V, and a corrosion current of − 1.15 − 0.220 + 0.219 μA.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·
IF 2.6
Hou Xiangshan,Song Jinxue,Xu Shijun,He Yi,Bai Yang,Sun Yi,Liu Han,Yuan Qing,Chen Quangang,Wei Kaijun
In this work, pulsed electrodeposition was utilized to successfully create Ni–B/ZrPP composite coatings on N80 steel plates. Investigations were conducted into how zirconium phenylphosphonate (ZrPP) nanosheets affected the mechanical characteristics, corrosion resistance, and surface morphology of Ni–B metal coatings. The results show that the surface of Ni–B/ZrPP nanocomposite coating is dense, and the defects of the original Ni–B coating are improved by ZrPP. In particular, with a flatter wear trajectory and a smaller wear volume, the composite coating containing 1.0 g/L of ZrPP had the maximum microhardness (1043 Hv) and an average COF of 0.350. At this point in time, the composite coating had the biggest total impedance (64,500 Ω⋅cm 2 ), the lowest corrosion rate (0.0256 mm/year), the highest corrosion potential (− 0.332 V), the lowest corrosion current density (2.18 µA/cm 2 ), and the best corrosion resistance.
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
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Jinxue Song,Yi He,Hongjie Li,Yihan Zhang,Bo Liu,Ruxia Song,Zhifei Zhang,Yahui He
ZrC particles were embedded into Ni B metal composite coatings by pulse electrodeposition in a Watt-type bath at 50 °C and 400 rpm with magnetic stirring. SEM, XPS , and AFM were used to characterize the appearance, chemical state, and surface roughness of the coating. The mechanical properties of deposits were measured by Vickers hardness and reciprocating friction, and scratches caused by linear reciprocating friction were analyzed with SEM and EDS in detail. In addition, the corrosion resistance was measured by the electrochemical impedance and polarization. The test results showed that the nanoparticles were uniformly dispersed across the substrate's surface, and the successful incorporation of nano-ZrC significantly changed the property of the nickel‑boron alloy coating. When the ZrC concentration in the bath was 4 g/L, the coating exhibited the best mechanical properties and corrosion resistance, the Vickers microhardness of the Ni-B/ZrC metal composite coating increased from 523 HV (pure Ni B) to 1073 HV, the friction coefficient decreased from 0.462 to 0.218 with a linear reciprocating sliding friction of 10 mm at a speed of 50 mm/min for 20 min under a load of 20 N. In 3.5 wt% NaCl solution at 25 °C and pH = 7, the impedance increased significantly, and corrosion potential became less negative (E = −0.316 V vs. SCE).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Miao Li,Yu Zhang,Zihao Chen,Yewei Zhang,Bin Yang,Fang Xie,Xiaobo Gong,Tao Zhang,Xiaoxiao Huang
Development of magnetic composites with rational microstructural design to achieve excellent electromagnetic wave (EMW) absorption in the low-frequency range is necessary and still challenging. Herein, the B/N carbon nanotubes loaded with Ni nanoparticles were successfully synthesized through a homogeneous precursor pyrolysis route. The homogeneity of the micro-magnetic field in the composite architecture is improved by the co-doping of B and N in carbon nanotubes due to the polarization effect, which would enhance the impedance matching and EMW absorption. The Ni@B/N carbon nanotubes exhibit a minimum reflection loss (RL min ) of −56.9 dB at 8.24 GHz with a maximum bandwidth of 7.12 GHz ranging almost all S and C bands (from 3.44 to 10.56 GHz) suggesting that the composite architecture effectively enhances low-frequency EMW absorption properties. The combination of impedance matching and interfacial polarization resulting from the homogeneous Ni nanoparticles and co-doping of B and N in carbon lattice structure is responsible for the enhanced low-frequency EMW absorption properties. This simple co-doping synthesis strategy provides a new design strategy for the preparation of broadband and low-frequency EMW absorbers.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Lu Li,Shiyu Ma,Huimin Liu,Zixuan Zeng,Qijie Li,Chunlin Song,Jingang Yang
Ammonia borane (NH 3 BH 3 ) as a solid chemical hydrogen storage material with a high hydrogen content can be hydrolyzed under mild conditions to release hydrogen. In this work, Fe–Ni–B/Cu(OH) 2 –Cu foam was synthesized by combining in situ growth and electroless plating. Compared with the binary Fe–B/Cu(OH) 2 –Cu foam and Ni–B/Cu(OH) 2 –Cu foam prepared by the same method, the ternary Fe–Ni–B/Cu(OH) 2 –Cu foam has superior catalytic performance. The Fe–Ni–B/Cu(OH) 2 –Cu foam catalyst was able to achieve a maximum hydrogen production rate of 5.6 ml min −1 cm −2 at 298 K with an activation energy as low as 46.3 kJ mol −1 . And more importantly, its catalytic efficiency has hardly decayed after ten cycles. These excellent properties are due to its low activation energy and the large specific surface, multi–site Cu(OH) 2 –Cu–foam carrier.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 35
·10184-10192
·
IF 0
Jie Shao,Xuezhang Xiao,Lixin Chen,Xiulin Fan,Leyuan Han,Shouquan Li,Hongwei Ge,Qidong Wang
A system of 2LiH–MgB2 and its hydrogenated 2LiBH4–MgH2 is an attractive candidate for hydrogen storage. However, its hydriding–dehydriding kinetics have to be further improved for practical application. In the present work, three kinds of Ni–B nanoparticles with different crystalline states and particle sizes were prepared by wet-chemical reduction and mechanochemical methods, and then introduced into a 2LiH–MgB2 composite for catalytic enhancement. The catalytic roles of Ni–B nanoparticles on the hydriding–dehydriding properties were investigated systematically. The results show that all of the Ni–B nanoparticles can significantly enhance the hydriding–dehydriding kinetics of the 2LiH–MgB2 composite, resulting in no incubation period for the formation of MgB2 during dehydrogenation. The more disordered the amorphous structure and the smaller sized the Ni–B particles are, the better the catalytic effect that is obtained. Microstructure analyses clearly reveal the formation of the MgNi3B2 phase in the dehydriding process, which acts as the nucleation agent for MgB2 formation determined by an edge-to-edge model. Directly doping with Ni–B nanoparticles in the 2LiH–MgB2 system shows a higher hydrogen desorption capacity of 9.4 wt% and obtains a better catalytic efficiency than doping with NiCl2.
研究领域:
材料科学
·
储能材料
·
无机化学
·
纳米催化
·
氢储存
✓ 已验证
DOI
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qing Yuan,Yi He,Yi Sun,Xiangshan Hou,Shijun Xu,Han Liu,Kaijun Wei,Xingtao Cheng,Quangang Chen,Yi Fan
In this study, a two-phase superhydrophobic nanocomposite coating was prepared by combining electroless deposition and electrodeposition methods. Firstly, the Ni-B /TiC coating were prepared on the metal surface by electroless deposition. Then, the low surface energy cerium myristic acid coatings (Ce [CH 3 (CH 2 ) 12 COO] 3 ) were further prepared on the coating surface by electrodeposition. The test results showed that the two-phase composite coating with Ce [CH 3 (CH 2 ) 12 COO] 3 deposited on the Ni-B/TiC coating (Ni-B/TiC@MACe) had excellent nonwetting properties (water contact angle of 160.1° and rolling angle of 4.3°) and self-cleaning properties. The coating exhibited excellent stability and durability, retaining its superhydrophobicity even after 12 months of exposure to air. Notably, this performance was less affected by pH fluctuations. In addition, mechanical robustness was verified by 50 tape stripping cycles in which the superhydrophobic surface maintained a water contact angle of over 150°. The test results of corrosion resistance showed that the Ni-B/TiC@MACe coating has excellent corrosion resistance with a corrosion inhibition rate of 99.95 %, and the impedance modulus was three orders of magnitude higher than that of the Ni-B coating. In addition, the coating provided protection under simulated acidic conditions with a corrosion potential of - 0.27 V. In a long-term immersion test, the coating impedance modulus remained at 10 6 after seven days of immersion, which effectively protected the underlying metal from corrosion-induced damage. Therefore, the superhydrophobic coating in this study is expected to provide new ideas for the design of new anti-corrosion coatings.
研究领域:
材料科学
·
表面工程
·
腐蚀科学
·
纳米技术
·
电化学
✓ 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）