CRYSTENGCOMM
·
2024
·Vol. 26
·期 38
·5431-5439
·
IF 2.6
Ting-Ting Xu,De-Sheng Wei,Shuang-Bao Li,Yu-Teng Zhang,Nan Lv
Although the fundamental configuration (tetrahedron-type and capsule-type) of Zr-MOCs is well understood, the synthesis of amino-functionalized Zr-based capsule (denoted as ZrC-1-NH2) based on 2-aminoterephthalic acid remains a considerable challenge. Fortunately, we obtained single crystals under solvothermal conditions and further achieved the rapid synthesis of ZrC-1-NH2 with pure phase and high yield using a microwave-assisted solvothermal method. In addition, ZrC-1-NH2 was utilized as a photocatalyst to perform the degradation of tetracycline (TC) in water. The degradation efficiency of 92.3% was achieved at the optimal conditions, and the main active free radical was determined as ·O2− according to the trapping agent experiment and EPR results. Furthermore, the possible degradation pathway of TC was proposed.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Bichao Geng,Jian Yang,Dapeng Chen,Junyang Jin,Yang Wang,Lin Zhao,Jian Gu
The ZrC nanoparticles were successfully fabricated using a novel amorphous zirconium metal-organic frameworks (aZMOFs) by one-step thermal decomposition at 1500 °C. The effects of different metal/linker ratios and solvent types on the synthesized ZrC nanoparticles were investigated. The property analysis of the particle in terms of phase purity, particle size, TG-DTA analysis and morphology indicated the as-synthesized ZrC nanoparticles with high purity, spherical shape and uniform particle size distribution (100 ± 21 nm). Notably, the partial distilled water substitution of DMF solvent amplifies the coordination between zirconium and linker, which leads to improving the consumption of excess carbon via carbothermal reduction. The current research provides a potential cost-effective synthesis method of preparing ultra-high temperature ceramic (UHTC) nanoparticles as matrices for fiber reinforced UHTC composites.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Hongjie Li,Yi He,Pingya Luo,Yi Fan,Teng He,YiHan Zhang,Yuxin Xiang,Yahui He,Ruxia Song
Herein, zirconium carbide (ZrC) nanoparticles (NPs) dispersion strengthening Ni W composite coatings were fabricated through pulse electrodeposition technology with an adoptive current density of 5 A·dm −2 . The chemical composition, crystal properties, microstructure and micromorphology of coatings were analyzed by XRD , XPS , SEM and EDS in detail. Mechanical properties such as hardness, wear resistance, surface wettability , and apparent roughness were performed by Vickers hardness tester, reciprocating friction test, water contact angle test and AFM, respectively. Corrosion resistance was investigated by potentiometric polarization, electrochemical impedance and scanning electrochemical microscopy . The results showed that the addition of ZrC NPs significantly optimized the surface integrity and improved the mechanical properties of Ni W coatings, the corrosion resistance of Ni-W/ZrC composite coating is far superior to the original coating. In addition, the addition of enhanced particles was discussed in detail. When the amount of ZrC NPS in the electroplating solution was 2 g/L, the fabricated composite coating had the best mechanical properties (the microhardness value was 723.36 HV and the average coefficient of friction was 0.235) and corrosion resistance properties (the corrosion potential was −0.200 V and the value of charge transfer resistance is 55.112 KΩ).
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Yuan Cheng,Chang Liu,Ping Hu,Boqian Sun,Peitao Hu,Chen Ma,Cheng Fang,Dongyang Zhang,Jiaxin Feng,Shanyi Du
Graceful toughness and high strength are mutually exclusive in engineering ZrC-SiC ceramic, which are hard to be possessed simultaneously. Here, the pyrolytic carbon (PyC) coated short chopped carbon fibers were utilized to toughen ZrC-SiC ceramic, tackling the dilemma between toughness and strength. Through the uniform incorporation of PyC coated short chopped carbon fibers, the penetration crack mode of ZrC-SiC was changed into an obviously deflecting propagation path with closed phenomenon. The PyC coating brought about a relatively weak interface bonding and guided the crack propagate along the weak interface, consequently resulting in a more flexuous crack propagation instead of passing through the fibers directly. Meanwhile, the fibers received effective protection of coating inhibiting from performance degradation. The PyC coated C f /ZrC-SiC obtained a fracture toughness highly reaching 7.57 ± 0.33 MPa m 1/2 with a rivaling flexural strength at 268 ± 16 MPa. Moreover, the graceful load-displacement curve is illustrated with a smoothly extended displacement of 0.12 mm and increased load to 83 N, which forms an obvious yield plateau. To some degree, this work provided an effective solution to tackling the dilemma between toughness and strength of engineering ZrC-SiC ceramic.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Haibo Ouyang,Wenlu Li,Cuiyan Li,Tianzhan Shen,Leer Bao,Sirui Wu
ZrO 2 @C spherical powder was synthesized via a solvothermal method and utilized in the fabrication of ZrC ceramics through direct ink writing (DIW) to enhance rheological properties and reduce sintering temperature. The effects of solid content on the rheological behavior and printability of the ZrO 2 @C paste were systematically investigated. The ZrO 2 @C paste exhibited typical pseudoplastic fluid characteristics and viscoelastic properties, demonstrating excellent shape retention and shear-thinning behavior. Optimal solid content and printing speed were determined to be 54 wt% and 100 mm/s, respectively, leading to superior printability. Using these optimized parameters, green bodies with planar and lattice structures were rapidly and precisely fabricated. After reactive sintering at 1600 °C, the resulting ZrC ceramic achieved a promising bending strength of 30.9 MPa. This study provides a robust strategy for the rapid fabrication of ultrahigh-temperature ceramics with complex geometries.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Rongfa Ding,Hui Wang,Yan Jiang,Rui Liu,Ke Jing,Meng Sun,Ruiqian Zhang,Shaoyu Qiu,Zhuoming Xie,Haowei Deng,Xianping Wang,Mingguang Kong,Weibin Jiang,Qianfeng Fang,Changsong Liu
ZrC dispersion-strengthened FeCrAl alloys with enhanced high-temperature strength and good ductility were fabricated through spark plasma sintering (SPS) and hot-forging. Nanosized ZrC particles with an average particle size of 56 nm were homogeneously dispersed in the FeCrAl-ZrC alloys. The addition of a small proportion of ZrC nanoparticles effectively refines the grain size and improves the strength and hardness of FeCrAl alloys. However, the ductility of FeCrAl alloys decreases gradually when the ZrC content increases from 0 wt% to 2.0 wt%. The tensile strength of SPSed FeCrAl-1.0 wt% ZrC alloy at 800 °C is 91 MPa, which is about 69% higher than that of pure FeCrAl, while the percentage elongation after fracture of FeCrAl-1.0 wt% ZrC is 15.0%, which is lower than that of FeCrAl (48.2%). To improve the ductility of FeCrAl-ZrC alloys, the SPSed samples were subjected to hot forging at 1000 °C. Through hot-forging, significant enhancement in ductility of FeCrAl-ZrC alloys was achieved without reducing the strength. The mechanical properties and microstructure of FeCrAl-1.0 wt% ZrC are stable after annealing at 1000 °C for 5 h, exhibiting superior thermal stability as compared with FeCrAl.
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
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Cuiyan Li,Guibiao Li,Haibo Ouyang,Jianfeng Huang,Xianghui Hou
Carbon fiber reinforced carbon matrix containing ZrC (C/C–ZrC) composites were prepared by hydrothermal deposition combined with carbothermal reduction. The submicron ZrC particles (100–300 nm) were dispersed in the matrix. The stress-strain curves of the composites presented a typical pseudo-plastic fracture behavior . The mass and linear ablation rates of the composites were 3.7 × 10 −3 g/s and 4.2 × 10 −3 mm/s, respectively. The formation of ZrO 2 glass layer reduced erosion of the composites in the ablation center. The continuous C–ZrC–ZrO 2 skeleton layer generated from the oxidation of ZrC can protect the composites from erosion at the ablation brim region. The obtained C/C–ZrC composites present a promising potential as ablation resistance materials.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
THIN SOLID FILMS
·
2022
·
IF 2.358
Yahui He,Shihong Zhang,Yi He,Hongjie Li,Yi Fan,Yihan Zhang,Yuxin Xiang,Teng He,Ruxia Song,Bo Liu,Zhifei Zhang
Zirconium carbide (ZrC) nano-ceramic particles were embedded in the nickel-phosphorus (Ni-P) nanocomposite coating on the surface of N80 steel through electroless deposition strategy. The addition of ZrC can significantly affect the surface morphology, microstructure, wear resistance and corrosion resistance of the coating. Compared with pure Ni-P coating, the average friction coefficient of Ni-P/ZrC (1 g·L −1 ) composite coating decreased from 0.510 to 0.224, and the specific wear rate is reduced from 1.31 × 10 −5 mm 3 ·m −1 ·N −1 to 2.81 × 10 − 6 mm 3 ·m −1 ·N −1 . In terms of improving the corrosion resistance of the coating, Ni-P/ZrC (1 g·L −1 ) composite coating shows a lower corrosion tendency and a higher electrochemical impedance, and its corrosion rate (4.54 × 10 −3 mm·a −1 ) is one order of magnitude lower than Ni-P coating (5.08 × 10 −2 mm·a −1 ). In addition, the long-term corrosion experiments of the samples show that the composite coating has a longer protective effect on the substrate. Through the analysis of the corrosion morphology, it is found that the improvement of the corrosion resistance of the coating is due to the addition of ZrC, which reduces the surface defects of the coating. At the same time, the labyrinth effect formed between ZrC and the coating can also slow down the corrosion rate.
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
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shaoxiong Weng,Zongyi Deng,Zhixiong Huang,Minxian Shi,Yuzhan Lu
The carbon fiber (CF) reinforced boron phenolic resin (BPR) matrix composite, renowned for its exceptional ablation resistance, represents a promising material for high-temperature applications. However, hypersonic vehicles are subjected to increasingly challenging service environments, which necessitate materials capable of enduring even more extreme temperatures. Consequently, there is a growing need for composites that exhibit superior ablation resistance. To tackle these demanding requirements, this research initiative introduces the integration of ceramizable fillers, including TiB2, B4C, and ZrC, into the composite structure to create a high-temperature ceramizable system. The experimental findings indicate that the composites formulated with this innovative system demonstrate extraordinary ablation resistance, even when exposed to oxyacetylene flames with a heat flux of 4364 kW/m 2 . Notably, the measured linear ablation rate and mass ablation rate were recorded at −0.012 mm/s and 0.0268 g/s, respectively. These values are exceptionally low. Subsequent analysis utilizing X-ray diffraction (XRD) and additional characterization techniques has confirmed the formation of a dense ceramic layer with a B-C-O-Ti-Zr composition on the composite surface at elevated temperatures. This ceramic layer acts as a formidable barrier, significantly mitigating the ablation effects caused by high-temperature exposure. Meanwhile, it is pertinent to note that the formation of the ceramic layer is accompanied by an endothermic reaction, which consequently leads to a reduction in the thermal conduction of the composite to some extent.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wentao Xu,Youfu Zhou,He Lin,Shuai Lu,Junrong Ling,Rui Wang,Zhiguang Wang,Kun Wang
ZrC-SiC nanocomposites were synthesized via a facile, green hydrothermal precursor conversion method. The zirconium , silicon and decomposed glucose can be successfully incorporated into a homogeneous framework. In subsequent pyrolysis, the precursor transforms to a core-matrix structure of the nano-ZrO 2 and amorphous carbon/silica mixture, resulting in a short diffusion path and limited grain growth. Carbide first appears at a low temperature of 1200 °C, and the conversion is completed at 1500 °C with low oxygen content. The composite consists of grains about 100 nm, exhibiting specific embedded morphology, and has different oxidation resistance in three temperature zones based on the component. The origin mechanism and properties have been elucidated and analyzed. The present work demonstrates the effectiveness of hydrothermal chemistry for the synthesis of carbide composites and their promising application in high temperature protection. Such nanocomposites with controllable morphology and high sinterability beneficial for subsequent densification are also verified. The additive-free ceramic has been obtained with almost fully density (relative density >99%) at a low temperature of 1700 °C by spark plasma sintering (SPS). The sintered specimen possesses fine microstructure with hierarchical grain size distribution (about 1 μm and 100 nm, respectively) and good mechanical properties (fracture toughness of 4.3 ± 0.4 MPa m 1/2 and Vickers hardness of 22.8 ± 0.7 GPa).
研究领域:
材料科学
·
高温防护材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Shijie Wang,Miaowei Liu,Xinhong Liu,Quanli Jia,Shaowei Zhang
In this work, porous ZrC-SiC ceramics with high porosity and low thermal conductivity were successfully prepared using zircon (ZrSiO 4 ) and carbon black as material precursors via a facile one-step sintering approach combining in-situ carbothermal reduction reaction (at 1600 °C for 2 h) and partial hot-pressing sintering technique (at 1900 °C for 1 h). Carbon black not only served as a reducing agent, but also performed as a pore-foaming agent for synthesizing porous ZrC-SiC ceramics. The prepared porous ZrC-SiC ceramics with homogeneous microstructure (with grain size in the 50–1000 nm range and pore size in the 0.2–4 µm range) possessed high porosity of 61.37–70.78%, relatively high compressive strength of 1.31–7.48 MPa, and low room temperature thermal conductivity of 1.48–4.90 W·m −1 K −1 . The fabricated porous ZrC-SiC ceramics with higher strength and lower thermal conductivity can be used as a promising light-weight thermal insulation material.
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
危险品化学品经营许可证（带存储）