CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Chenyang Xu,Baosong Li,Zhengwei Liu,Ziwei Yuan,Zhen Zhang,Shengquan Chen
Nanocrystalline Ni–Mo and Ni–Mo–ZrO 2 coatings were designed and successfully fabricated via electrodeposition process in direct current mode. Impacts of molybdate and ZrO 2 nanoparticles , cathodic current density ( i c ) on surface, structure and performance of Ni–Mo alloy were analyzed. Electrochemical behaviors were evaluated by electrochemical impedance method in sodium chloride solution. A more compact and consistent surface morphology was prepared by introducing molybdate in nickel. Grain sizes of Ni–Mo alloy decreased as molybdate increased from 2 to 6 g L −1 , and enlarged as i c increased. After incorporation of ZrO 2 , the grains initially decreased to 12 nm and later increased to 18 nm. The structure of the deposit is a face-centered cubic phase. With the increase of molybdate content, the preferential Ni (220) crystal plane was changed to oriented (111) plane. The Ni–Mo alloy comprises 91 wt% Ni and 5.4 wt% Mo. R a of Ni–Mo–ZrO 2 was 73 ± 4 nm. Ni–Mo alloys obtained at 20 mA cm −2 and 2 g L −1 molybdate possess the best corrosion-resistant behavior. Incorporation of ZrO 2 can strengthen electrochemical stability and anti-wear behavior of Ni–Mo alloy. The inclusion of ZrO 2 refined the grain size from 18 to 12 nm. The Ni–Mo/ZrO 2 coatings electrodeposited under 2–4 g L −1 Na 2 MoO 4 ·2H 2 O, 20–40 mA cm −2 , 10–15 g L −1 ZrO 2 have excellent wear and corrosion resistance.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
PHYSICA SCRIPTA
·
2024
·Vol. 99
·期 7
·075978
·
IF 2.6
Ning Zhong,Jean Baptiste Maniriho,Qianlin Wu,Xiaodong Wang,Yijia Gu,Wenge Li,Yuantao Zhao
This work was initiated with the purpose of expanding the utilization of nickel-based composite coatings, especially in wear and corrosion-related industrial applications. NiCoP coatings have long attracted scientific and engineering interest due to their enhanced mechanical properties reinforced by incorporation with a reinforcement phase. In the present study, NiCoP composite coatings reinforced with ZrB2 ceramic particles were synthesized by direct current deposition using a modified Watt's type bath. The microstructures of composite coatings were studied by x-ray diffraction analysis, energy dispersive x-ray spectroscopy, and scanning electron microscopy, respectively. The hardness and tribological properties of the composite coatings were evaluated and compared. The corrosion behaviors of the deposits were investigated using electrochemical spectroscopy and potentiodynamic polarization techniques in simulated seawater. The effect of ZrB2 content on the microstructures and mechanical properties of the composite coatings was explored and discussed. The present study indicates that there is a progressive enhancement in the hardness, corrosion resistance, and wear resistance of the composite coatings with the increase in ZrB2 loading. The NiCoP-12 g/l-ZrB2 coating possesses the highest microhardness and superior wear performance, while the NiCoP-6 g/l-ZrB2 coating exhibits the best anti-corrosion properties. The present study shows a cost-effective and feasible solution for the preparation of NiCoP protective coatings with enhanced properties, which holds great potential for industrial applications requiring wear and anti-corrosion protection.
研究领域:
材料科学
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电化学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2017
·
IF 2.843
Wei Jiang,Ming Mao,Wei Qiu,Yingming Zhu,Bin Liang
Lotus leaves and rose petals are both typical natural superhydrophobic surfaces, with low and high adhesion, respectively. This fact inspires us to prepare superhydrophobic surfaces with different levels of adhesion on iron by mimicking their hierarchical structures through three simple steps: abrasion, calcination, and modification. A uniform and stable superhydrophobic iron surface with excellent adaptability and wearability can be obtained, and its adhesion is tunable. The results confirmed that superhydrophobicity and adhesion are both dependent on the synergy of the microscale and nanoscale patterns of the hierarchical structure generated by the designed abrasion and thermal treating. The adhesion level can be controlled by simply adjusting the abrasion program to obtain the desired microscale pattern with a proper ratio of height-to-width of the microstructure. This easy, inexpensive, and clean three-step method is widely applicable for different engineering metals and alloys and suitable for large-scale production.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yanfei Liu,Jinjin Li,Xiangyu Ge,Shuang Yi,Hongdong Wang,Yuhong Liu,Jianbin Luo
Introduction of graphene-family nanoflakes in liquid results in a reduction in friction and enhanced wear resistance. However, the high demand for dispersity and stability of the nanoflakes in liquid largely restricted the choice of graphene-family nanoflakes thus far. This study proposed a new strategy to overcome this limitation, involving the formation of a graphene coating with deposited graphene-family nanoflakes, followed by the lubrication of the coating with glycerol solution. Pristine graphene (PG), fluorinated graphene (FG), and graphene oxide (GO) nanoflakes were chosen to be deposited on the respective SiO2 substrates to form graphene coatings, and then an aqueous solution of glycerol was used as lubricant. The coefficient of friction (COF) and wear rate were reduced for all deposited coatings. However, the PG coating exhibited better lubrication and antiwear performance than FG and GO coatings. A robust superlubricity with COF of approximately 0.004 can be achieved by combining glycerol with the PG coating. The superlubricity mechanism was attributed to the formation of a tribofilm, mainly composed of graphene nanoflakes in the contact zone. The extremely low friction achieved on the hydrophobic graphene coating with liquid can aid in the development of a high-performing new lubrication system for industrial applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
·
2023
·
IF 1.5
Jue Wang,Heng Zhang,Wei Wu,Zeyun Wang
Use of the synergistic effect between nanomaterials and ionic liquids is of great significance for designing high-performance lubricating materials. In this work, Zn-MOF/[P88814]DEHP (zinc complexes with 2-aminoterephthalic acid nanosheets/trioctyltetradecylphosphonium bis (2-ethylhexyl) phosphate) composites were successfully synthesized by grinding the mixture of [P88814]DEHP and Zn-MOF with different mass ratios and evaluated as a new kind of the white oil additive using a four-ball testing machine. Results demonstrate that the optimal mass ratio of Zn-MOF to [P88814]DEHP was 1:1 and the Zn-MOF/[P88814]DEHP composite with 2.0 wt% addition amount into the white oil significantly reduced friction coefficient and wear. Such obvious friction-reducing and outstanding anti-wear properties of Zn-MOF/[P88814]DEHP composite could be attributed to the synergistic lubrication between Zn-MOF and [P88814]DEHP. This work investigated the synergistic lubrication between MOFs and ILs, which provided a new idea for designing and preparing new lubricating oil additives.
研究领域:
材料科学
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润滑工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 8
·4483-4492
·
IF 2.302
Lu Hongsheng,Tang Weiwei,Liu Xiang,Wang Baogang,Huang Zhiyu
The oleylamine (OA)-modified carbon nanoparticles (CPs -OA ) with particle sizes of 25–35 nm were synthesized by a facile one-pot pyrolysis method. As the OA molecules were covalently attached on the surfaces of CPs -OA , the CPs -OA exhibited good dispersibility in polyalphaolefin (PAO). Then the tribological behaviors of CPs -OA as the lubricating additives of PAO were investigated in detail. Under the four-ball mode and the load of 392 N, the CPs -OA showed the best friction-reducing and antiwear properties at the optimal concentration of 1.0 wt%. Specifically, in comparison with that of pure PAO, the mean friction coefficient and mean wear scar diameter of the 1.0 wt% CPs -OA /PAO suspension reduced by 47 and 30%, respectively. The friction-reducing and antiwear capabilities of CPs -OA strengthened with increasing load from 200 to 392 N and increasing test time from 240 to 480 min. In addition, the CPs -OA -based additives could work for a long time without weakening the lubrication capability. The synergistic effect of tribofilm, including PAO molecules and the CPs -OA layer, might account for the outstanding friction-reducing and antiwear capabilities of CPs -OA -based additives under boundary lubrication.
研究领域:
材料科学
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润滑工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 4
·2476-2490
·
IF 4.186
Chenkai Qu,Lin Chen,Tao Su,Dongbo Li,Yuan Yang,Jing Feng
Ferroelastic YTaO 4 is a promising material for thermal barrier coatings (TBCs), and its thermal and mechanical properties can be further optimized by various methods. In this study, a ferroelastic middle-entropy ceramic Y 0.5 Gd 0.5 Ta 0.5 Nb 0.5 O 4 was synthesized by solid-phase sintering, and its microstructures and thermophysical properties were key points. We determined the contributions of phonons and photons to total thermal conductivity, and a low thermal conductivity was obtained by inhibiting high-temperature thermal radiation. The thermal expansion coefficients were improved by introducing of Nb atom into the lattice of the prepared middle-entropy ceramic, which meets the requirements of TBCs. The improved wear resistance originated from relatively high Young's modulus and the hardness of Y 0.5 Gd 0.5 Ta 0.5 Nb 0.5 O 4 , and it would contribute to the service performance of the corresponding coatings. This work motivates the engineering applications of ferroelastic RETaO 4 and RENbO 4 (RE is rare-earth element) as high-temperature TBCs.
研究领域:
材料科学
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热力学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Xiangkang Cao,Guangyi Cai,Yicong Wang,Jinglong Pan,Xinxin Zhang,Zehua Dong
Polybenzoxazine (PBZ) is a kind of high corrosion-resistant polymer, however, the brittleness and weak adhesion strength of PBZ have puzzled their applications. In this work, we introduced ether amine molecules into benzoxazine monomers via molecule design, and then copolymerized them with tannic acid (TA) to realize flexible PB-TA coating systems, aiming at achieving durable corrosion and abrasion protection for steel structures. It is found that the PB-TA copolymer gains favorable plasticity up to 39.44 % elongation. Meanwhile, TA provides more active sites and stronger hydrogen bond interaction, which increases the crosslinking density of PB-TA coating and achieves a high adhesion strength (13.57 MPa) to the mild steel substrate. Further experiments evidence that the PB-6TA coating (with 6 % mass of TA addition in the PBZ) presents high corrosion resistance (>10 9 Ω.cm 2 after 600 h salt spraying test), far beyond polyurethane and epoxy resin coatings. Also, the PB-6TA coating exhibits a higher anti-friction ability during cyclic wear corrosion test than the pristine PBZ coating. It is expected that this work may help boost the development of polybenzoxazine-based coatings with long-term corrosion resistance in harsh marine environments.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Xiaokong Song,Hao Gong,Hongchao Li,Manyao Zhang,Lin Jiang,Chao Wang,Peipei Jiang,Huifen Wang,Kangli Cao,Gang Liu,Qibin Zhao,Tongxiang Fan
Passive radiative cooling materials offer electricity-free cooling by strongly reflecting sunlight and emitting thermal radiation to outer space, presenting a significant potential to reduce energy consumption and carbon emissions . Among these, particle-filled coatings stand out for their ease of processing, cost-effectiveness, and superior cooling performance, making them a promising solution for building cooling applications. However, the practical outdoor application of current particle-filled coatings is hindered by their inadequate abrasion resistance , impacting the coating’s service life significantly. In this study, an efficient daytime cooling coating composed of ZrO 2 particles and silicone acrylate with superior abrasion resistance is presented. By experimentally optimizing the composition, particle size, and volume fraction, this coating achieved a solar reflectivity of 95.7%, an emissivity of 0.978, and an abrasion resistance significantly exceeding that of existing commercial outdoor coatings, at 5310 m ⋅ N/mm 3 compared to the typical 134 m ⋅ N/mm 3 . Even under extensive wear, the coating’s reflectivity only diminished by 0.7%, far less than the 3.8% reduction observed in commercial alternatives, demonstrating its durability under harsh conditions. Moreover, in humid daytime summer conditions, these coatings demonstrate an average temperature reduction of 2.6 °C and a maximum of 7.7 °C below ambient temperature. This work provides new insights in designing durable radiative cooling coatings, paves the way for their practical application in more outdoor applications settings.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Biru Shi,Haohao Wu,Dekun Sheng,Wenhua Zhang,Xinxin Tian,Yinglu Sun,Haopu Xie,Jiahui Zhong,Xiangdong Liu,Yuming Yang
Disulfide bonds are widely used in self-healing materials owing to their dynamic nature under mild conditions. However, their practical application is severely limited by their low tensile strength . In this work, a linear polyurethane (CHPU) containing disulfide bonds and crystalline polycaprolactone diol is designed and synthesized. The infiltration of polypyrrole (PPy) nanoparticles endows the CHPU/0.5PPy nanocomposites with a high tensile strength (26.23 MPa), high toughness (119.71 MJ/m 3 ), and a remote self-healing ability that can be triggered by heat or low-intensity (near-infrared) NIR radiation. A cut CHPU/0.5PPy film can recover 77.35% and 64.77% of its original tensile strength under 808 nm NIR radiation (118.46 mW/cm 2 ) and 50 °C, respectively. In addition, CHPU/0.5PPy can bear 300 reciprocating linear abrasion cycles (0.5 N load force) with a stable friction coefficient, delivering a performance superior to those of many commercial anti-abrasion polyurethane coatings.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Acta Biomaterialia
·
2021
·
IF 8.947
Xian Tong,Quanxiang Sun,Dechuang Zhang,Kun Wang,Yilong Dai,Zimu Shi,Yuncang Li,Matthew Dargusch,Shengbin Huang,Jianfeng Ma,Cuie Wen,Jixing Lin
β -type titanium (Ti) alloys have been extensively investigated as orthopedic implant materials due to their unique combination of low elastic modulus , high specific strength , corrosion resistance , and biocompatibility. In this study the mechanical properties , corrosion behavior, friction and wear performance, and cytotoxicity of β -type Ti–24Nb–38Zr–2Mo (TNZM) and Ti–24Nb–38Zr–2Mo–0.1Sc (TNZMS) have been comparatively investigated for orthopedic applications. Cold-rolling (CR) and cold-rolling plus solution-treatment (CR+ST) were performed on the as-cast (AC) alloys and their microstructures and material properties were characterized. The impact of Sc addition on the mechanical and corrosion properties, friction and wear behavior, and in vitro cytocompatibility of the TNZMS alloy was assessed. The CR+ST TNZMS alloy exhibited the best combination of properties among all the alloy samples, with a yield strength of 780 MPa, ultimate strength of 809 MPa, elongation of 19%, Young's modulus of 65.4 GPa, and hardness of 265 HV. Electrochemical testing in Hanks’ Solution indicated that the CR+ST TNZMS sample also showed the highest corrosion resistance with a corrosion potential of -0.234 V, corrosion current density of 0.07 µA/cm 2 , and corrosion rate of 1.2 µm/y. Friction and wear testing revealed that the TNZMS alloy showed higher wear resistance compared to the TNZM alloy and the wear resistance of the different samples was ranked CR > CR+ST > AC. Finally, both the CR+ST TNZM and TNZMS showed no-cytotoxicity towards MG-63 cells and the TNZMS exhibited slightly higher cytocompatibility than the TNZM alloy. Statement of significance This work reports the β -type Ti–24Nb–38Zr–2Mo (TNZM) and Ti–24Nb–38Zr–2Mo–0.1Sc (TNZMS) alloys fabricated by as-cast (AC), cold-rolling (CR), and cold-rolling plus solution-treatment (CR+ST) for potential orthopedic applications. The experimental results showed that the TNZMS alloy exhibited significantly enhanced mechanical, wear, and corrosion properties than those of TNZM alloy; and the CR+ST TNZMS possess a unique combination of the best mechanical and corrosion properties including a yield strength of 780 MPa, ultimate strength of 809 MPa, elongation of 19%, Young's modulus of 65.4 GPa, and corrosion rate of 1.2 µm/y in Hanks’ Solution. Both the CR+ST TNZM and TNZMS alloys exhibited non-cytotoxicity towards MG-63 cells and TNZMS showed a higher cytocompatibility than that of TNZM.
研究领域:
材料科学
·
生物医学工程
·
冶金学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Jianyu Xu,Cansen Liu,Ran Zhang,Xiaoqing Deng,Yaping Zhou
Developing and manufacturing novel coatings with excellent tribological performance using environmentally friendly and simple methods hold significant potential and challenge for reducing energy consumption and carbon emissions. Here, we use a gentle method to synthesize the MoS 2 -load CeO 2 nanohybrid (CeO 2 @MoS 2 ) as an additive to construct a Co-CeO 2 @MoS 2 composite coating with friction reduction and wear resistance through a low-cost electrodeposition technique. The friction measurement results show that CeO 2 @MoS 2 nanohybrid effectively reduces the friction coefficient and increases the wear resistance compared to single CeO 2 or MoS 2 . The synergistic effect of hard CeO 2 and soft MoS 2 gives the Co-CeO 2 @MoS 2 coating with an extremely low coefficient of friction of about 0.05 and a wear rate of about 3.53×10 −6 mm 3 (N·mm) −1 . In addition, the Co-CeO 2 @MoS 2 coating can maintain an extremely low coefficient of friction with long-term stability in tribological tests. This work provides a novel strategy for constructing coatings with remarkable tribological performances and promotes the application of CeO 2 @MoS 2 nanohybrid as an additive to improve material properties.
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
危险品化学品经营许可证（带存储）