CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Runxiao Yu,Jing Lei,Yao-Yin Lou,Sheng-Peng Sun
TiC/TiO 2 ECM has good conductivity, water permeability and compressive strength. • TiC/TiO 2 ECM enables efficient electrocatalytic degradation of carbamazepine (CBZ). • Direct electron transfer plays a dominant role in degrading CBZ on TiC/TiO 2 ECM. • TiC/TiO 2 ECM has a promising application in actual water matrices. Electrocatalytic ceramic membranes (ECMs) hold great potential for advanced treatment of emerging organic micropollutants in water, however, their application is greatly limited by the tedious and complicated fabrication procedures. This study reported a novel titanium carbide (TiC)/TiO 2 ECM fabricated via a facile compression molding and sintering approach. Characterization results revealed that the TiC/TiO 2 ECM had a dominant pore size distribution of 200–300 nm, water permeability of >200 L m −2 h −1 bar −1 , with good conductivity and compressive strength. Notably, the TiC/TiO 2 ECM enabled highly efficient electrocatalytic filtration removal of representative pharmaceutical micropollutant (e.g., carbamazepine (CBZ)) under a low applied voltage of 5 V with small electrolyte concentration of 8–10 mM Na 2 SO 4 /NaCl. Radical quenching and probe testing results indicated that direct electron transfer (DET) played a predominant role in degrading CBZ, and the electrogeneration of chlorine radical (Cl • ) in NaCl electrolyte contributed to additional CBZ degradation. The TiC/TiO 2 ECM resulted in efficient electrocatalytic degradation of pharmaceuticals with electron-rich moieties (for instance, CBZ, crotamiton, trimethoprim with almost 100% removal), but with limited degradation efficiencies toward ibuprofen (75%) and diethyltoluamide (30%) because of their less electron-donating capacity. The dominant DET pathway endowed the TiC/TiO 2 ECM a good performance for CBZ degradation in actual water matrices, making it an ideal candidate for application. Download: Download high-res image (126KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ya-Qi Zhao,Ying Wang,You-Jin Zheng,Li-Zhi Peng,Li-Juan Wang,Fang-Biao Wang
The mechanical properties of titanium carbide (TiC) ceramics are limited by poor densification during sintering and their intrinsic brittleness. In this study, 5 wt% Al was introduced as a sintering aid, and 10 wt% cubic boron nitride (cBN) was added to fabricate TiC-based ceramic composites via high-pressure high-temperature (HPHT) sintering. The microstructure and mechanical properties were systematically investigated. The composites sintered at 4 GPa and 1400 ℃ exhibited optimal properties, with a Vickers hardness of 37.43 GPa and a fracture toughness of 11.41 MPa·m 1/2 , representing increases of 69% and 132% compared with monolithic TiC, respectively. Microstructural analysis shows that Al promotes densification by enhancing interparticle bonding, while cBN participates in interfacial reactions under HPHT conditions, leading to formation of rod-like TiB 2 phases distributed along grain boundaries. The results demonstrate that the synergistic effect of Al-assisted densification and cBN-induced TiB 2 formation governs the microstructure evolution and mechanical performance of TiC-based ceramic composites, providing a feasible strategy for designing high-performance TiC-based ceramic.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2026
·Vol. 47
·期 2
·118810
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IF 6.3
Meicen Fan,Weiwei Xiao,Shile Chen,Yao Han,Yanhao Dong,Chang-An Wang
The advancement of flash sintering (FS) for insulating ceramics, such as Al 2 O 3 , has long been stifled by a persistent thermal-mechanical instability paradox: the extreme electric fields required for initiation inevitably trigger localized Joule heating and runaway densification, culminating in catastrophic structural failure. Herein, we report a DC electric field-assisted sintering paradigm that successfully decouples the beneficial electronic activation of a flash event from its destructive densification kinetics. By architecting a percolative TiC conductive skeleton, we lower the flash initiation threshold to an unprecedented 50 V·cm −1 . Crucially, an immediate transition to a current-controlled regime post-initiation effectively mitigates thermal runaway while sustaining a non-equilibrium, flash-activated state. This state, characterized by a dramatic surge in oxygen vacancies (
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INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
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2026
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IF 4.7
Feiyu Liu,Weiqiang Hu,Geng An,Kai He,Lu Yang,Jinli Chen,Gui Tian,Zongqing Ma
Different from the traditional single strategy of strengthening molybdenum matrix, we designed a full chain preparation process to regulate the Mo-TiC alloy matrix at three scales. Refining the grain size of traditional large-sized molybdenum alloy from >10 μm to <3 μm lays the foundation for high strength. Next, optimizing the dislocation distribution to generate subgrain boundaries at lower scales and layered structures of low/high defect grain regions at higher scales. The subgrain boundaries with high stability due to ultrafine grain pinning could first pin dislocations and indirectly slow down the dislocation accumulation at grain boundaries. Furthermore, the cracks restricted by layered structure tend to propagate longitudinally, which reduces local stress concentration and promotes further stress dispersion through long-distance plastic deformation. Based on the above factors, the Mo-TiC alloy possesses a combination of high strength (792.9 MPa) and excellent plasticity (26.2%), which provides a new perspective for preparing high-performance refractory alloys.
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Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 14
·9124-9133
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IF 12.732
Guoping Liu,Lei Zhang,Yucun Zhou,Luke Soule,Yangchang Mu,Wenwu Li,Zhicong Shi
Designing a novel anode material with suitable elemental composition and bonding structure for improving the limited capacity and poor lithium-ion conductivity of lithium-ion batteries (LIBs) is still challenging. Here, guided by first-principles calculations, we report a higher crystal symmetric, cation-disordered zinc blende Zn0.5Ge0.5P anode material with high-capacity and high-rate capability owing to superior electron and lithium-ion transport compared to the parent allotrope chalcopyrite ZnGeP2. The Zn0.5Ge0.5P anode exhibits a large specific capacity of 1435 mA h g−1 with a high initial Coulombic efficiency of 92%. An amorphization–conversion–alloying reaction mechanism is proposed based on ex situ characterizations including X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. During lithiation, the material phase-changes through Li3P, LiZnGe, β-Li2ZnGe, and α-Li2ZnGe intermediates that provide suitable transport channels for fast diffusion of lithium ions. During delithiation, LiZn, Li15Ge4, and Li3P nanoparticles reassemble into Zn0.5Ge0.5P. A Zn0.5Ge0.5P–TiC–C composite with finer particle size and enhanced electronic conductivity exhibits an initial specific capacity of 1076 mA h g−1 and a capacity retention of 92.6% after 500 cycles.
研究领域:
材料科学
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能源存储
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Energy Technology
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2023
·Vol. 12
·期 3
·2300736
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IF 3.8
Peilong Zhou,Xinwei Geng,Dongxu Yao,Yongfeng Xia,Yu-Ping Zeng
Traditional carbon materials suffer from weak adsorption of lithium polysulfides and excessive consumption of electrolyte. A simple and feasible molten salt method is applied for constructing an active nanocrystalline TiC shell on the surface of porous carbon. The highly active TiC nanoshells endow the core–shell composite with efficient chemical–physical synergistic adsorption, which can effectively confine and convert polysulfides, thereby improving the electrochemical performance of lithium–sulfur batteries. The lithium–sulfur batteries assembled with modified separator deliver a high initial discharge specific capacity of 1396 mAh g −1 at a discharge rate of 0.5 C and a high capacity retention of 747.1 mAh g −1 after 500 cycles, with a high coulombic efficiency of 98% during cycling. Besides, this molten salt method can be applied to modify the porous carbon materials of various composite sulfur cathodes such as graphene, carbon nanotubes, and 3D nonwoven carbon fabrics.
研究领域:
材料科学
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能源存储技术
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CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Yang Jia,Tao Li,Xiaoguang Chen,Haitao Xue,Weibing Guo,Cuixin Chen
Al 2 O 3 ceramic and 304 stainless steel were brazed with AgCuTi filler in this paper. Two kinds of composite filler were prepared by adding Cu foam and Cu foam covered with graphite (Gr-Cu foam) to relieve the residual stress of the joints. The effects of Cu foam pore size on the joints were investigated in detail, and the evolution mechanism of the joints was analyzed. Graphite-reinforced Cu foam was fabricated by spraying graphite for the first time. Results showed that the extremely low coefficient of thermal expansion of graphite and the good energy absorption performance of Cu foam were both conducive to reducing the thermal residual stress during the cooling process. Gr-Cu foam with pre-filled pores was used to solve the problems of structural dissolution of Cu foam and unfilled solder in Cu foam pores to a certain extent. And it played a key role in preventing the diffusion of metal atoms. The graphite on the surface of the Cu foam generated TiC in the brazing seam. The TiC and Cu foam promoted the formation of the TiCu strengthening phase. Furthermore, when the pore size of the Gr-Cu foam was 150 μm, the maximum shear strength of the joint was 246.84 MPa. This value was about 40% higher than that of Cu foam with the same pore size. The residual stresses of joint with and without graphite-reinforced were calculated, respectively, for both conditions. The reduction of residual stress was found after adding the graphite during brazing.
研究领域:
材料科学
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冶金工程
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焊接工程
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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IF 4.939
Linglong Yao,Xuanyu Lyu,Jiguang Zhang,Yana Liu,Yunfeng Zhu,Huaijun Lin,Yao Zhang,Liquan Li
Nanostructuring and catalyzing are effective methods for improving the hydrogen storage properties of MgH 2 . In this work, transition-metal-carbides (TiC, ZrC and WC) are introduced into Mg–Ni alloy to enhance its hydrogen storage performance. 5 wt% transition-metal-carbide containing Mg 95 Ni 5 (atomic ratio) nanocomposites are prepared by mechanical milling pretreatment followed by hydriding combustion synthesis and mechanical milling process, and the synergetic enhancement effects of Mg 2 NiH 4 and transition-metal-carbides are investigated systematically. Due to the inductive effect of Mg 2 NiH 4 and charge transfer effect between Mg/MgH 2 and transition-metal-carbides, Mg 95 Ni 5 -5 wt.% transition-metal-carbide samples all exhibit excellent hydrogen storage kinetic at moderate temperature and start to release hydrogen around 216 °C. Among them, 2.5 wt% H 2 (220 °C) and 4.7 wt% H 2 (250 °C) can be released from the Mg 95 Ni 5 -5 wt.% TiC sample within 1800 s. The unique mosaic structure endows the Mg 95 Ni 5 -5 wt.% TiC with excellent structural stability, thus can reach 95% of saturated hydrogen capacity within 120 s even after 10 cycles of de-/hydrogenation at 275 °C. And the probable synergistic enhancement mechanism for hydrogenation and dehydrogenation is proposed.
研究领域:
材料科学
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能源工程
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Coatings
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2026
·Vol. 16
·期 7
·853
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IF 3.4
Lianmeng Wang,Jianke Luo,Jiang Wang,Ying Xu,Hui Dong,Yongsheng Zhu
Steel components in thermal power plants are vulnerable to severe wear and wall thinning induced by the high-velocity impact of pulverized coal, which significantly compromises their service life and structural integrity. To address this issue, a TiC-reinforced AlCoCrFeNi high-entropy alloy (HEA) composite coating was fabricated via laser cladding, aiming to substantially enhance the wear resistance of these critical components. The phase composition, microstructure, microhardness and tribological behaviors of the coatings were systematically investigated by XRD, SEM, EDS and dry sliding wear tests. Results show that both coatings possess dense microstructures and reliable metallurgical bonding with the substrate. The AlCoCrFeNi coating consists of a single BCC solid solution phase, while the TiC/AlCoCrFeNi composite coating contains a BCC phase and a TiC ceramic phase without brittle intermetallic compounds. The average microhardness of the TiC/AlCoCrFeNi composite coating was measured to be 823 HV0.3, which is 85.66% greater than that of the AlCoCrFeNi coating (443 HV0.3). Under identical wear test conditions, the AlCoCrFeNi coating exhibits a mass loss of 31.4 mg and a volumetric wear rate of 24 × 10−3mm3/min, whereas the TiC/AlCoCrFeNi composite coating exhibits a mass loss of 15.6 mg and a wear rate of 13 × 10−3mm3/min, corresponding to reductions of approximately 50.32% and 45.83%, respectively. The wear mechanism of the AlCoCrFeNi coating is dominated by severe abrasive wear coupled with adhesive wear, while the addition of TiC converts the wear mechanism into mild abrasive wear and oxidative wear. The incorporation of TiC particles effectively enhances the microhardness and reduces the mass loss, thereby contributing to a marked improvement in the wear properties of the laser-clad AlCoCrFeNi coating. This research provides experimental data and theoretical support for the engineering application of TiC/AlCoCrFeNi composite coatings on wear-resistant components in thermal power units.
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COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2026
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IF 8.2
Jiaqi Liu,Cuiyan Li,Haibo Ouyang,Tianzhan Shen,Shuai Zhang,Xinnuo Wang,Xinge Niu
Functional ceramic foams are promising candidate materials that integrate electromagnetic absorption, load-bearing, thermal insulation, and thermal stability, to meet the challenges of extreme environments in modern aerospace technology. In this study, SiC fiber has been introduced in the ZrC-TiC ceramic foam to enhance the mechanical properties and electromagnetic wave absorption performance. The SiC f /ZrC-TiC ceramic foam has been fabricated by a simple precursor self-foaming method with a porosity of 76.9% and a density of 0.31 g/cm 3 . The interconnection of SiC fibers endows SiC f /ZrC-TiC ceramic foam with excellent load-bearing capacity with a compressive strength of 41.3 MPa. Meanwhile, the introduction of SiC fiber boost its electromagnetic wave absorption performance with a RL min = −63.5 dB and EAB max = 6.04 GHz. The high porosity endows it with a low thermal conductivity advantage of 0.231 W·m −1 ·K −1 . Particularly, SiC f /ZrC-TiC ceramic foam exhibit outstanding high-temperature stability. After 10 thermal cycles at 1600 °C, the compressive strength remained at 30.7 MPa, and the EAB max was 5.28 GHz (RL min = −57.2 dB). The multifunctional synergistic advantages of SiC f /ZrC-TiC ceramic foams provide a feasible strategy for the design of multifunctional protective materials in aerospace.
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Journal of Materials Research and Technology-JMR&T
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2026
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IF 7.3
Jiatong Zhong,Liang Liu,Rui Bao,Caiju Li,Weiyi Yang,Xin Kong,Xiaofeng Chen,Zunyan Xu,Fengxian Li,Jianhong Yi
Achieving exceptional strain hardening is a promising strategy for simultaneously enhancing the strength and ductility of titanium matrix composites (TMCs). In this study, a novel carbon-based nanomaterial, namely polypyrrole (PPy), was used to fabricate TMCs reinforced with intragranular titanium carbide (TiC) through spark plasma sintering and hot rolling. Concurrently, face-centered cubic of titanium (FCC-Ti) was formed through the synergistic effects of high local stress field and interstitial solid solution oxygen atoms. The ultimate tensile strength and uniform elongation of the Ti-0.6PPy composites reached 1029 MPa and 11.3%, representing a 67% and 88% improvement over the pure Ti (614 MPa, 6.0%), respectively. The significantly enhanced strength was benefited from the O atoms solid solution strengthening and Orowan strengthening. Ex-situ EBSD combined with TEM characterization were conducted to analyze the microstructure of the deformed Ti-0.6PPy composites. It had revealed that dislocation hot spots moved from grain boundaries to the grain interiors and surrounded to the new formed FCC-Ti phase. This transformation enhanced the dislocation storage capacity, led to higher dislocation density and prolonged strain hardening, thereby achieved superior uniform elongation and ductility.
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JOURNAL OF MATERIALS CHEMISTRY
·
2011
·Vol. 21
·期 25
·9095-9102
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IF 5.101
Xinyong Tao,Yiping Li,Jun Du,Yang Xia,Yingchao Yang,Hui Huang,Yongping Gan,Wenkui Zhang,Xiaodong Li
Finding a general procedure to produce a whole class of materials in a similar way is a desired goal of materials chemistry. In this work, we report a new bamboo-based carbothermal method to prepare nanowires of covalent carbides (SiC and B4C) and interstitial carbides (TiC, TaC, NbC, TixNb1−xC, and TaxNb1−xC). The use of natural nanoporous bamboo as both the renewable carbon source and the template for the formation of catalyst particles greatly simplifies the synthesis process. Based on the structural, morphological and elemental analysis, volatile oxides or halides assisted vapour–liquid–solid growth mechanism was proposed. This bamboo based carbothermal method can be generalized to other carbide systems, providing a general, one-pot, convenient, low-cost, nontoxic, mass production, and innovative strategy for the synthesis of carbide nanostructures.
研究领域:
材料化学
·
纳米材料科学
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危险品化学品经营许可证（带存储）