Open Ceramics
·
2026
·
IF 3.4
Xingpu Hu,Zhaoran Li,Guoqi Liu,Fan Qian,Mao Chen,Yongqiang Chen
Side seal plates for thin-strip continuous casting require exceptional resistance to thermal shock, corrosion and wear, for which h-BN based ceramics serve as promising candidates. However, h-BN-ZrO 2 -SiC composites suffer from poor sintering densification. h-BN-ZrO 2 -SiC composites modified with varying amounts of B 2 O 3 as a single additive were prepared via vacuum hot-press sintering at 1550 °C, 1600 °C and 1650 °C. The phase composition, microstructure, relative density, flexural strength and thermal shock resistance were systematically investigated. The composite with 1 wt% B 2 O 3 sintered at 1650 °C achieved a flexural strength of 76.6 MPa, which was 42% higher than that of the additive‑free sample. The results revealed that B 2 O 3 facilitates the in-situ formation of ZrB 2 via a liquid‑phase sintering mechanism. This work clarified the modification mechanism of B 2 O 3 in h-BN-based composites, providing experimental basis and theoretical guidance for the development of h‑BN‑based ceramics used for side dams in thin‑strip continuous casting.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Mingyue Liu,Chaoqiong Zhu,Sun Han,Cheng Xu,Shiheng Li,Zunpeng Feng,Yihan Ling,Ziming Cai,Peizhong Feng
The prime advantage of BaTiO 3 for energy-storage applications is its compatibility with reducing-atmosphere sintering processes, a well-developed technology that allows cost-effective co-firing with Ni electrodes. Nevertheless, the high hysteresis and low breakdown strength of BaTiO 3 limit its broader applications in energy-storage devices. In this work, core-shell structured BaTiO 3 @ZrO 2 ceramics are synthesized by a sol-gel method, with particular attention paid to the effects of coating time on the microstructure and energy storage properties. The introduction of ZrO 2 layer significantly increases the breakdown strength of BaTiO 3 ceramics. When the coating duration is 5 h, a high discharge energy density of 2.09 J/cm 3 is obtained, representing a fourfold enhancement over pure BaTiO 3 ceramics. Additionally, the BaTiO 3 @ZrO 2 ceramics exhibit an excellent energy storage stability against DC-bias, temperature, and frequency. This work provides a feasible way to optimize the energy storage properties of ferroelectric ceramics.
研究领域:
材料科学
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陶瓷材料
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储能技术
·
纳米技术
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DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Wenjun Yu,Zihua Lei,Wenqian Pan,Yang Li,Songlin Ran,Le Fu
In this study, we sought to develop structure-function integrated ZrO 2 -SiO 2 ceramic nanocomposites by simultaneously incorporating one-dimensional (1D) carbon nanotubes (CNTs) and three-dimensional (3D) Ti 3 AlC 2 MAX phase. The CNTs and Ti 3 AlC 2 were introduced into the ZrO 2 -SiO 2 precursor powder via a straightforward wet ball milling process. CNTs maintained excellent structural stability during sintering, whereas the Ti 3 AlC 2 decomposed into Al and TiC. The flexural strength of the nanocomposite was enhanced by 34 % attributed to the pull-out strengthening effect of the CNTs. The uniformly distributed 1D CNTs and the in-situ formed 3D TiC particles created an interconnected network within the ceramic matrix, thereby providing efficient pathways for electron transport. Consequently, the electrical conductivity and electromagnetic wave absorption properties of the nanocomposites were markedly improved. This study demonstrates an effective approach to developing structure-function integrated ceramic composites by exploiting the dimensional differences and synergistic interactions between the filler phases.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Wenxia Zhang,Juan Zhang,Chao Wang,Man Liu,Jie Liu,Lifeng Xiao,Jiangang Chen
Organic acid modification can significantly enhance the performance of iron-based catalysts in Fischer–Tropsch synthesis (FTS) by regulating the quantity and type of functional groups on the catalyst surface. In this study, efficient Fe/ZrO2 catalysts were prepared using impregnation and environmentally friendly solid-state synthesis methods, and the effects of different organic acids on catalytic performance were systematically investigated. The catalysts were rigorously evaluated under industrially relevant FTS conditions, with reaction temperatures set at 270 °C for the impregnation method and 250 °C for the solid-state grinding method under 20 bar and WHSV = 5400 mL/(gcat·h). Comprehensive characterization techniques were employed to reveal the complex relationship between catalytic activity and structural characteristics. We systematically studied the effects of organic acids with different quantities of carboxyl and hydroxyl groups on improving FTS catalytic performance. The results show that citric acid (CA) significantly enhanced the catalytic activity in the CA-Fe/ZrO2 system. At a 6% Fe loading, a CO conversion of 39.89% was achieved at 270 °C, while maintaining a relatively low CH4 selectivity. The hydroxyl and carboxyl groups of CA can form stable complexes with metal ions, which improves the dispersion of iron, enhances the reducibility of iron oxides, promotes the formation of active Hägg iron carbide (χ-Fe5C2), facilitates chain growth, and ultimately boosts the production of valuable C5+ hydrocarbons. These findings highlight the potential of CA in optimizing iron-based FTS catalysts, offering important theoretical insights and practical guidance for future industrial applications.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qingfeng He,Lei Wang,Lu Chang,Jimin Chen,Yong Zeng
In this study, zirconia (ZrO 2 ) ceramics exhibiting exceptional mechanical properties were fabricated utilizing vat photopolymerization (VPP) 3D printing technology. Subsequent surface modification was conducted to convert the material from a hydrophilic to a superhydrophobic state. An inverted triangle pyramid structural model was devised to safeguard the superhydrophobic surface by means of its architectural design, culminating in the development of wear-resistant superhydrophobic ZrO 2 ceramics. Comprehensive investigations were conducted into process optimization, microstructural characteristics, mechanical attributes, hydrophobicity, and tribological properties. The findings revealed that utilizing BYK-111 as a dispersant at a concentration of 2.5 wt.% yields optimal rheological behavior of the ZrO 2 ceramics slurry, conducive to 3D printing applications. At a sintering temperature of 1550 °C, the ZrO 2 ceramics attained a density of 99.3%, while its Vickers hardness and flexural strength peaked at 1465.02 HV and 641.87 MPa, respectively. The findings revealed that the surface contact angle of the modified ceramics specimen attained 157 , signifying outstanding superhydrophobic characteristics. To preserve its superhydrophobic microstructure from abrasion-induced damage, a three-dimensional architecture featuring minute inverted pyramids was engineered to shield the superhydrophobic surface. To investigate the impact of varying inverted pyramid geometries and dimensions on wear resistance, a range of alternative structural configurations were devised for wear testing. The wear resistance of ceramics with these distinct structural forms was assessed by comparing their contact angles. This research offers an innovative, cost-effective, and efficient approach for fabricating superhydrophobic materials within the ceramics sector, thereby improving their wear resistance.
研究领域:
材料科学
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表面工程
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Qian Lu,Xinyi Wan,Yujie Hou,Yuli Zhang,Zhiliang Guo,Yifan Zhang,Changgan Lai,Lixu Lei
We have proposed a cost-effective method to make a membrane for alkaline water electrolysis by combining organic polymers with inorganic materials, to achieve high ionic conductivity, excellent alkaline stability, and superior electrochemical properties. In this study, NiFe layered double hydroxide (LDH) powders synthesized hydrothermally, mixed with 2 wt% ZrO 2 are physically crosslinked with polyvinyl alcohol (PVA) gel to form a ZrO 2 /NiFe-LDH@PVA slurry. The slurry has been coated onto a non-woven fabric to reduce being oxidated by the anodic active substances during the electrolysis process, also, a layer of nylon gauze is sandwiched to improve its mechanical properties. The resulted membrane exhibited exceptional mechanical strength (24.9 MPa tensile strength) and remarkable hydroxide ion conductivity (86.52 mS cm −1 at 90 °C). Furthermore, NiCo/NM and NiFe/NM catalysts were electrodeposited and integrated with the ZrO 2 /LDH@PVA composite membrane to assemble an alkaline water electrolysis device. When tested in 6 M KOH electrolyte at 70 °C and 2.0 V, the device achieved a current density of 781 mA cm −2 and maintained stable operation for at least 400 h.
研究领域:
材料科学
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电化学
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能源技术
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纳米技术
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高分子科学
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无机化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xiaofang Wang,Ran Yu,Liying Pu,Mingqiao Chen,Xingyu Zhu,Shangpeng Fan,Peng Liu,Xiang Shen
Membrane technologies have been extensively employed to separate and purify emulsified oily wastewater. However, the long-term performance of membranes is still restricted by oil fouling and their inability to function in severe conditions. Herein, ZrO 2 nanoparticles were deposited onto the poly(vinylidene fluoride) membrane surface using γ-aminopropyl triethoxysilane (KH550) as a coupling agent, as inspired by a biomimetic coating method of polydopamine (PDA). It has been determined that the distribution density of nanoparticles can be tuned by adjusting the KH550 and ZrO 2 concentrations. After coating the PDA and ZrO 2 layers, the nanocomposite membrane exhibits a high degree of hydrophilicity, underwater superoleophobicity, and anti-oil-fouling properties. This outstanding characteristic endows the membrane with an ultrahigh permeation flux of emulsion and a rejection ratio of over 99 % for a variety of oil/water emulsions. The flux recovery of the nanocomposite membrane remains at over 91 % after thirteen cyclic filtrations of emulsions. Moreover, the excellent surface wettability and oil/water separation properties of the nanocomposite membranes can be maintained under prolonged exposure to strong acid, alkali, and salt solutions.
研究领域:
材料科学
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环境工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lei Wen,Chao Sui,Jiaxuan Li,Chenxi Zhao,Yushun Zhao,Junjiao Li,Gong Cheng,Xiaodong He,Chao Wang
Advanced hollow ceramic fiber materials with excellent thermal insulation and lightweight characteristics are urgently needed in rapidly developing areas such as aerospace. However, creating such hollow ceramic fiber materials has proven to be extremely challenging for current synthetic techniques. Here, we introduce a facile approach for the production of hollow yttria-stabilized zirconia (YSZ) fiber felts through sol–gel solution centrifugal spinning. It is found that the hollow structure can be effectively controlled by adjusting the mass ratios of inorganic salts and PVP, as well as the calcination temperatures. The resulting hollow YSZ felts exhibit low density (38 mg cm − 3 ), robust tensile strength (439.56±24.23 kPa), significant stretchability (>10 %), exceptional oxidation and high-temperature resistance, refractory properties, and outstanding thermal insulation characteristics (0.019 W m −1 K −1 at room temperature and 0.103 W m −1 K −1 at 1000℃). The successful synthesis of such fascinating materials may provide new insights into the design and development of hollow ceramic fibers.
研究领域:
材料科学
·
航空航天工程
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DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Ruifa Wu,Xuanyu Zhang,Ming Deng,Mi Zhou,Kaikai Jin,Wei Xu,Ruifeng Li,Kai Kang,Chaoyu Xiang
Zirconia nanoparticles (ZrO 2 NPs) are considered promising functional materials due to their high refractive index , thermal stability, and relatively wide bandgap. They can be particularly valuable when blended with monomer resins to create transparent composite materials with tunable refractive indices. However, the challenge of synthesizing uniformly sized and transparently dispersible ZrO 2 NPs in organic resin monomers has been an ongoing research problem. In this study, we proposed an improved method based on an existing synthesis route for the production of ZrO 2 NPs. We employed a sol-gel approach and introduced a simple yet effective strategy to synthesize ZrO 2 NPs. Using high-boiling non-coordinating solvent squalane to adjust the concentration of oil amine ligands in the solution, helped to balance the nucleation and growth of ZrO 2 , thereby improving the size uniformity of ZrO 2 NPs. In addition, the addition of sodium hydroxide (NaOH) to the reaction system effectively promoted the crystal growth of ZrO 2 without affecting its crystal structure and crystallinity . Simultaneously, this addition significantly reduced the content of surface oleylamine (OAm) ligands. Finally, ZrO 2 was modified using 2-Ethylhexanoic acid (EHA) and 3-methacryloxypropyltrimethoxysilane (KH-570), achieving successful transparent dispersion within the high refractive index acrylic monomer , benzyl acrylate (BZA). In-situ polymerization was used with a UV initiator to produce a refractive index continuously tunable BZA/ZrO 2 composite film .
研究领域:
材料科学
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纳米技术
·
化学工程
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Mengmeng Yang,Yang Ding,Zhaofeng Chen,Qiong Wu,Lihao Liu,Tianlong Liu,Manna Li,Kai Xu,Lu Le,Lixia Yang
As promising candidates for widespread application, advanced ceramic fiber mats with robust mechanical properties are urgently needed. However, the brittleness, fatigue failure, and large density of ceramic fiber pose significant obstacles to its practical application. Herein, a novel SiO 2 aerogel/ZrO 2 composite nanofibrous membrane (SZCNFM) with excellent flexibility was prepared by introducing SiO 2 aerogel nanoparticles into ZrO 2 nanofiber via simple co-electrospinning. The developed tetragonal zirconia phase without changing up to 1200°C endows SZCNFM material with excellent thermal stability. Furthermore, the as-prepared membranes exhibit fatigue resistance ability which can maintain 98% of the original stress after 100 buckling cycle tests. The addition of mesoporous structure aerogel reduces the heat transfer of the nanofibrous membrane, giving its low thermal conductivity (30 mW/m/K) and low-frequency sound absorption (noise reduction coefficient of 0.52). Combined with the high-temperature resistance, low thermal conductivity and excellent sound-absorption ability make it a promising material for heat insulation and acoustic absorption.
研究领域:
材料科学
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热学工程
·
声学工程
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高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
·
2024
·
IF 3.2
A. Anbu,M. Dilipkumar,K. Jeyajothi,M. Rajasimman,M.S. Manojkumar
In the case of the current research, an easy and effective procedure for fabricated magnetized distinguishable core-shell organized Ag–ZrO 2 /Fe 3 O 4 @TiO 2 QNCs with comprised of a magnetically charged Fe 3 O 4 core, a mesoporous ZrO 2 @TiO 2 interlayer, as well as a protective outer Ag nanoparticles wrap has been offered applying capsicum fruit extract manipulate, a chemico-pyto approach. And thereby produced Ag–ZrO 2 /Fe 3 O 4 @TiO 2 QNCs have been evaluated through TEM and SEM visuals, EDX and XRD spectrum. The fact that their photocatalytic function for the breakdown of methylene blue upon UV light was investigated. The outcomes of Ag–ZrO 2 /Fe 3 O 4 @TiO 2 nanocomposites had stronger photocatalytic abilities. The PL evaluation indicated that Ag–ZrO 2 /Fe 3 O 4 @TiO 2 composites had higher couple of electrons and holes separation effectiveness over Ag–ZrO 2 /Fe 3 O 4 @TiO 2 . On top of that, the Ag–ZrO 2 /Fe 3 O 4 @TiO 2 nanocomposites can potentially be readily segregated as well as recovered using an ambient magnetized sector, indicating their high functionality.
研究领域:
材料科学
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环境科学
·
植物化学
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高影响因子
Materials
·
2026
·Vol. 19
·期 5
·
IF 3.7
Jianjun Shi,Hui Xu,Peixiong Zhang,Jingjing Liu,Enhui Wang,Bo Ren,Xinmei Hou
Porous Ca2Mg2Al28O46(C2M2A14) ceramics are highly competitive candidates in the field of critical metal filtration due to their attractive non-metallic-inclusions removal capacity. However, the low mechanical strength and inadequate thermal shock resistance (TSR) of these materials restrict their further application. In this work, ZrO2-toughened C2M2A14-based porous ceramics are fabricated by using the polymer sponge replica method. Nano-sized ZrO2particles derived from nano-ZrO2sol are beneficial to enhance the mechanical properties and TSR of porous ceramics. The optimized porous C2M2A14ceramics exhibit robust compressive strength (2.15 MPa), good residual strength ratio (66.4%) and excellent filtration efficiency in the reduction in total oxygen content (68.4%) by adding 3 wt% ZrO2sol. These excellent comprehensive properties show that as-prepared porous C2M2A14ceramics are promising candidate materials for application in the field of critical metal filtration.
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PubMed
高影响因子
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