International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 5
·2737-2746
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IF 2.1
Zhaoping Hou,Xinhe Yang,Zihan Tian,Liangliang Liu
Porous Al 2 O 3 ceramic beads with a small-scale lamellar pore structure were prepared by the dripping-ice templating method. The densification behavior of lamellar walls and the attrition resistance of porous Al 2 O 3 beads were investigated. For the two-dimensional structural lamellar walls, the intrinsic pores shrunk, and the necking area grew during the sintering process, leading to the densification of lamellar walls and the shrinking of porous beads. In addition, the two-dimensional lamellar walls and three-dimensional Al 2 O 3 bulk are compared and possibilities of elaborating of the discrepancy in grain size and pore morphology are discussed. Attrition resistance was determined by a grinding test. The dominant attrition mechanism of porous Al 2 O 3 beads is abrasion. High sintering temperature led to a decrease in the attrition rate due to a wider necking area and denser pore walls.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Jing Zhang,Changhua Li,Xiaofeng Zhang,Hao Chen,Rui Gou,Chao Zhang,Dan Sun,Yi He
The use of graphene-based materials as anticorrosion coatings to protect metals is always a topic of discussion. In this work, silicon nitride (Si3N4) was aminated to improve its water dispersibility. Then it is attached to the graphene oxide (GO) surface to improve compatibility with epoxy (EP) resin as well as conductivity. The results of Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and zeta potentials test analyses indicated that Si3N4–NH2@GO with a layer-point structure has been successfully prepared. The corrosion resistance of the composite coatings was characterized by electrochemical impedance spectroscopy (EIS) and polarization curve analysis, and the wear resistance of the composite coatings was tested by friction and wear tests. The results showed that 1.0% Si3N4–NH2@GO has excellent corrosion and wear resistance. The use of Si3N4–NH2@GO layer point structures in this study broadens the way for GO applications.
研究领域:
材料科学
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防腐蚀技术
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2019
·
IF 7.466
Yiwen Hu,Yongxin Wang,Chunting Wang,Yuwei Ye,Haichao Zhao,Jinlong Li,Xiaojiang Lu,Chunlong Mao,Shanjun Chen,Jinming Mao,Liping Wang,Qunji Xue
A simple and low-cost bottom-up method for the preparation of water-soluble Carbon dots (CDs) by tuning the carbonization degree of ammonium citrate. The structure and morphology of CDs were characterized by Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). And the investigation on the lubricating property and inhibition effect of CDs as nanoadditives of water-based lubricants is discussed in this work. The results show that the CDs as eco-friendly nanoadditives exhibit low friction coefficient , outstanding wear-resistance and excellent inhibition effect.
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
WEAR
·
2022
·
IF 4.695
Yongfeng Yang,Yuan Qin,Yi Yang,Mingxia Wu,Gang Yang
Pulsed magnetic field treatment (MT) was applied to cemented carbide (WC–12Co) for enhancing its wear resistance in contact titanium alloy (TC4). Based on the magnetic response after MT, ferromagnetic Ni and Fe 3 O 4 nanoparticles and nonferromagnetic Cu were selected as additives to prepare lubricating fluids. The results reveal that the wear resistance of the cemented carbide/titanium alloy contact under cutting fluid lubrication was improved by MT. Significantly, the wear resistance was further enhanced by coupling of MT and Fe 3 O 4 magnetofluid. The workpiece wear volume of coupling decreased by 33.9%, and the ball wear scar decreased by 36.4% compared with that of the untreated ball in cutting fluid lubricant. The enhanced wear resistance comes from the magnetic response of Fe 3 O 4 to the treated magnetic ball (remanence) and improved hardness. The adsorption of Fe 3 O 4 nanoparticles onto the treated magnetic ball reduces the adhesion of TC4 and forms a titanium alloy film containing Fe 3 O 4 nanoparticles. In addition, increased hardness due to magnetostriction and magnetic domain enlargement during pulsed magnetization also contributes to the enhanced wear resistance.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Song Wu,Jiaye Li,Stephen Jerrams,Shipeng Wen
With the development of new energy vehicles, vehicle weight and the influence of heightened frequency of starting and braking on tire properties are much higher than those for traditional petrol/diesel fuel vehicles, leading to a requirement for much lower rolling resistance and higher abrasion resistance of tire tread rubber. In this research, graphene oxide (GO) was treated by maleic anhydride-grafted polyisoprene liquid rubber (MLR) to form MLR-GO. MLR-GO was further compounded with natural rubber (NR) to obtain MLR-GO/NR composites by green latex compounding and subsequent flocculation. A liquid rubber interfacial layer on the surface of GO increased the spacing between GO lamellae, and improved the dispersion of GO in NR. Due to extensive stretching of molecular chains of MLR and NR in the liquid phase, MLR molecular chains on the surface of MLR-GO were entangled with NR molecules. Moreover, elastic interfaces on the surface of GO were created during the subsequent high-temperature vulcanization process, leading to a strengthening of the interfaces between GO and NR and interfacial friction in the rubber composite was reduced. Results showed the MLR-GO/NR composites had excellent overall performance when the ratio of MLR to GO was 2.5:1. The rolling resistance and temperature rise during dynamic cycling of the 2.5 MLR-GO/NR composites were superior by 10.4 % and 5.2 °C, respectively, and the abrasion resistance was improved by 35.2 %, when compared with the NR composites without GO.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Hui Yuan,Hsiu-Wei Cheng,Laura LE Mears,Renliang Huang,Rongxin Su,Wei Qi,Zhimin He,Markus Valtiner
Osteoarthritis is a prevalent degenerative joint disease characterized by progressive articular cartilage loss and destruction. The resultant increase in friction causes severe pain. The collagen I matrix (COL I) has been used clinically for cartilage repair; however, how COL I acts at cartilage surfaces is unclear. Here, we studied adsorption and lubrication of synovial fluid components, albumin, γ-globulin, and the phospholipid DPPC, on COL I under physiological conditions using surface plasmon resonance and an in situ sensing surface force apparatus. Our results revealed COL I had poor lubrication ability, a fairly high coefficient of friction (COF, μ = 0.651 ± 0.013), and surface damage under a 7 mN load. DPPC formed an improved lubricating layer on COL I (μ = 0.072 ± 0.016). In sharp contrast, albumin and γ-globulin exhibited poor lubrication with an order of magnitude higher COF but still provided benefits by protecting COL I from wear. Hence, DPPC on COL I may help optimize COL I implantation design.
研究领域:
生物医学工程
·
骨科研究
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Changkai Wang,Hailin Lu,Xiangheng Zheng,Huiyun Yang,Bowen Xue,Fang Guo
Although the microarc oxidation (MAO) technique can improve the properties of metals, there is still room for improvement in the tribological properties of MAO coatings. In this study, reduced graphene oxide (rGO) films were successfully prepared on the surface of MAO coatings using high-pressure ethanol vapor, which significantly improved the tribological properties of MAO coatings. The microscopic morphology of the rGO/MAO coatings was analyzed by scanning electron microscopy (SEM), and the sealing effect of the rGO coatings on the micropores of the MAO coating surface was further confirmed by a 3D profile scanner. Then, X-ray photoelectron spectroscopy (XPS) was used to investigate the changes in the GO structure of the MAO coating surface before and after high-pressure ethanol vapor reduction. Finally, tribological experiments were conducted to evaluate the tribological properties of rGO/MAO. The results showed that the coefficient of friction (COF) of the prepared rGO films was reduced by 45.13% and the wear resistance of the MAO coatings was extremely improved. This innovative approach provides a feasible solution for the development of composite coatings, which can be widely applied in the field of coating preparation.
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
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Yan Nie,Shengyan Ma,Maozhang Tian,Qun Zhang,Jiankun Huang,Meiwen Cao,Yuqi Li,Lu Sun,Jie Pan,Yuming Wang,Pengyu Bi,Hualong Xu,Jingbin Zeng,Shengjie Wang,Yongqing Xia
A multifunctional silane-based composite surface coating with self-cleaning, anticorrosive and antimicrobial abilities have been fabricated on metal surface . The surface coating is designed to have a “sandwich” structure that contains a chemically etched surface at the bottom, a SiO 2 -hybridized silane layer in the middle and a Ti 3 C 2 -hybridized silane layer on the top. The chemical etching produces a rough surface that helps to produce superhydrophobicity. The silane molecules are crosslinked to form a film of low surface energy, which not only contributes to surface superhydrophobicity but also plays dominant roles in corrosion resistance . The SiO 2 nanoparticles and Mxene (Ti 3 C 2 ) nanosheets are hybridized in the film to enhance compactness, mechanical strength and wearing resistance of the film, resulting in a surface coating with excellent anticorrosion efficiency. Mxene can also introduce antimicrobial ability to the surface coating. The study develops an effective strategy to construct multifunctional composite surface coatings, which is not only suitable for modification of clinical and biomedical devices for anticorrosive and antibacterial purposes, but also can be used to modify the surface of daily-use facilities to facilitate their daily maintenance and cleaning.
研究领域:
材料科学
·
表面工程
·
生物医学工程
✓ 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）