CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 20
·30881-30887
·
IF 5.6
Zhenghuang Quan,Zhoufu Wang,Hao Liu,Yan Ma,Shen Zhou,Pingtao Fang,Chao Shu
Yttrium oxide material exhibits excellent vacuum and high-temperature chemical stability, making it an ideal first-choice refractory material for superalloy smelting. However, its poor fracture toughness and low thermal shock stability seriously limit its service life. The ferroelastic toughening phase LaNbO 4 provides excellent fracture toughness due to the ferroelastic domain switching toughening effect. This study focused on yttrium oxide materials, utilizing Y 2 O 3 , La 2 O 3 , and Nb 2 O 5 fine powders as the main raw materials. By incorporating ferroelastic functional unit characteristics, a pre-synthesis LaNbO 4 phase with good intrinsic fracture toughness was introduced into the Y 2 O 3 matrix. The effects of different LaNbO 4 contents on the phase composition, microstructure, mechanical properties, and thermal shock resistance of Y 2 O 3 /LaNbO 4 composite materials were subsequently investigated. The following results were obtained: 1) The optimal pre-synthesis temperature of LaNbO 4 was 1200 °C. At this temperature, LaNbO 4 powder with a fine grain and uniform grain size could be synthesized. 2) The Y 2 O 3 and LaNbO 4 phase resulted in mutual solid solution formation, leading to a change in grain size and mechanical strength of the Y 2 O 3 /LaNbO 4 composite material. 3) The addition of an appropriate amount of LaNbO 4 resulted in the formation of a structure filled with LaNbO 4 grains between the grain boundaries of Y 2 O 3 , effectively improving the fracture toughness and thermal shock stability of the materials. 4) The hardness and strength of LaNbO 4 were lower than the Y 2 O 3 phase, making the selection of LaNbO 4 phase addition to Y 2 O 3 crucial. The excessive addition of the LaNbO 4 phase caused the LaNbO 4 phase in the material to dominate. The hardness and strength of the Y 2 O 3 /LaNbO 4 composite materials were inferior to those of the Y 2 O 3 material, however, the fracture toughness and thermal shock stability improved due to the ferroelastic toughening effect. Therefore, an optimal amount of LaNbO 4 phase should be added to balance the fracture toughness and thermal shock stability of Y 2 O 3 /LaNbO 4 composite materials, while maintaining the hardness and strength of the Y 2 O 3 phase.
研究领域:
无机非金属材料
·
高温结构材料
·
陶瓷增韧
·
材料科学
·
热力学稳定性
·
粉末冶金
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 21
·12726-12735
·
IF 3.269
Zhongqiang Ding,Xueliang Li,Pei Zhang,Jingjian Yu,Yang Hua
Ultrafine Y2O3 modified carbon aerogels (Y-CAs) were successfully fabricated via in situ and sol–gel methods. The Y-CA materials exhibit interconnected porous structures and high adsorption ability. The Y-CA/S composites loaded with sulfur served as cathode materials in lithium–sulfur batteries to suppress the polysulfide diffusion and offer high electrical conductivity during the charge/discharge process. In particular, the designed Y2-CA/S cathode exhibits a high initial discharge capacity of 1369 mA h g−1 and retained 1108 mA h g−1 after 100 cycles at 0.2C. The Y2-CA/S cathode presents a good rate capability of 994 mA h g−1 up to 2C and nice long-term cycling stability with a high reversible capacity of 892 mA h g−1 after 300 cycles at 0.5C. The excellent electrochemical performance of the batteries is attributed to high adsorption ability and the uniform Y2O3 distribution on the porous and interrelated carbon spheres.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 10
·5567-5572
·
IF 3.502
Weide Wang,Dongxu Yao,Hanqin Liang,Yongfeng Xia,Kaihui Zuo,Jinwei Yin,Yu-Ping Zeng
A two-step sintering process was conducted to produce β-Si 3 N 4 ceramics with high thermal conductivity. During the first step, native SiO 2 was eliminated, and Y 2 O 3 was in situ generated by a metal hydride reduction process, resulting in a high Y 2 O 3 /SiO 2 ratio. The substitution YH 2 for Y 2 O 3 endow Si 3 N 4 ceramics with an increase of 29% in thermal conductivity from 95.3 to 123 W m −1 K −1 after sintered at 1900°C for 12 hours despite an inferior sinterability. This was primarily attributed to the purified enlarged grains, devitrified grain boundary phase, and reduced lattice oxygen content in the YH 2 -MgO-doped material.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Zhigang Jiang,Le Zhang,Fangzheng Zhen,Qing Yao,Wei Bu,Tianyuan Zhou,Yuelong Ma,Rong Sun,Hao Chen,Yun Wang
Well-dispersed Y 2 O 3 powders were synthesized by a precipitation method from yttrium nitrate solution using (NH 4 ) 2 SO 4 and PEG4000 as the composite surfactant , and the dispersion mechanism of the composite surfactant was investigated in detail. Furthermore, the grain size, densification, mechanical and optical quality of as-prepared ceramics were also discussed. The dispersion state of both precursors and Y 2 O 3 powders could be remarkably effected by the mass ratio of (NH 4 ) 2 SO 4 and PEG4000 during the liquid phase reaction process. When the function of electrostatic repulsion and the steric hindrance were combined properly, the aggregation state of powders could be effectively inhibited. With the addition of the mass ratio of 3:2 ((NH 4 ) 2 SO 4 to PEG4000), fine powders (130 nm) with high dispersion state were obtained. Meanwhile the Y 2 O 3 ceramics with an average grain size of 3.65 µm were fabricated by sintering at 1750 °C for 8 h.
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
SCRIPTA MATERIALIA
·
2014
·
IF 2.968
Ben Ma,Bo Chi,Jian Pu,Jian Li
The morphology of domain structure in LaNbO 4 added to YSZ–NiO composite was examined using a focused ion beam prepared specimen in a transmission electron microscope with a straining stage. It is confirmed for the first time that the morphology is changed under load through domain boundary movement. The driving force for this domain switch is the difference in Gibbs free energy between domains with different crystallographic orientations. This domain switch improves toughness by dissipating stress build-up at the crack tips.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2018
·
IF 4.525
Yongshuai Xie,Lin Wang,Benxue Liu,Luyi Zhu,Shuying Shi,Xinqiang Wang
High-quality reflective screens constitute an important part of multi-layer insulation materials. However, the metal foils currently used as thermal reflective screens are easily oxidized in an oxidizing environment. Nanoscale yttrium oxide exhibits high reflectivity in the near-infrared (NIR) region, as well as excellent stability in an oxidizing environment. The material also shows potential for application as a high-temperature reflective screen. A high near-infrared reflective Y 2 O 3 nanofiber membrane was successfully prepared by electrospinning a synthetic polyacetylacetone‑yttrium (PAY) precursor into precursor fibers, followed by heat treatment. The new polyorganometallic precursor PAY with 42% Y 2 O 3 content was synthesized by adjusting the ratio of acetylacetone to YCl 3 ·6H 2 O. The crystallization, microstructure and NIR reflectivity of the Y 2 O 3 nanofiber membrane were analyzed. The tensile strength of the Y 2 O 3 nanofiber membrane was evaluated. The strength of the Y 2 O 3 nanofiber membrane with good flexibility, prefect morphology and high crystallinity could reach 1.6 MPa, and its NIR reflectivity could reach 95%. High-temperature heat-reflective testing shows that the Y 2 O 3 nanofiber membrane exerts a reflective effect on thermal radiation at 1500 °C. It could be continuously used as a reflective screen for high-temperature insulation materials in a high-temperature oxidizing environment.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Tiantian Du,Jun Niu,Leyao Wang,Jintao Bai,Shengxing Wang,Shijie Li,Yongzhe Fan
Daytime radiative cooling technology can release heat into outer space without consuming any electricity during the day while reflecting as much solar radiation as possible. This characteristic gives radiative cooling materials considerable application potential in the fields of energy-saving buildings, fabrics, and photovoltaic cells. The radiative cooling coating (RC coating) applied to a building should cover a large area of the building surface, so a RC coating was prepared by spraying. The RC coating consisted of highly near-infrared reflective yttrium oxide (Y2O3), titanium dioxide (TiO2), and polydimethylsiloxane (PDMS). The RC coating could reach a high solar reflectance of 92.2% and a high atmospheric window emissivity of 94.9%. The complementary reflectivity of TiO2 and Y2O3 was the key to obtaining high reflectivity for RC coatings. The results of field tests showed that the cavity where the RC coating is cooled was 7.7 °C lower than the ambient temperature under direct sunlight. Moreover, the average radiative cooling power of the RC coating was 72.5 W/m2 on a hot summer day. In addition, the RC coating has good stability and thus can be used in various conditions, such as on outdoor buildings.
研究领域:
材料科学
·
能源工程
·
建筑设计
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Yingchun Shan,Cun Wei,Liya Ma,Haoran Guo,Xiaoguang Han,Jiangtao Li,Jiujun Xu
By co-doping 0.15 wt% Y 2 O 3 and 0.60 wt% MgO , AlON ceramics with high transmittance in visible and infrared range (the maximum transmittance of 81.8%@3600 nm, 78.1%@400 nm) were successfully fast fabricated via pressureless sintering at 1880 °C for 2.5 h. The phase assemblage, microstructure and densification process of samples doped (Y 2 O 3 /MgO single- and co-doped) and undoped additives during heating were monitored to explore the densification mechanism. MgO was found to be an exceptional inhibitor for both AlON decomposition and grain growth. By incorporating MgO as one constituent of additives, the content of α-Al 2 O 3 that decomposed from AlON in samples during heating was significantly reduced and Mg 2+ illustrated inhibition to grain boundary migration, resulting in particle aggregation/coarsening were effectively suppressed at ≤ 1600 °C. Based on the obtained microstructure with compacted small particles and negligible particle aggregation/coarsening at early stage of sintering, facilitated by the acceleration of Y 3+ on mass transfer, rapid densification of AlON was achieved.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Hongxing Wang,Lantao Liu,Weiwei Pang,Yiming Li,Ziyu Sun,Zhigang Zhang,Xiaohong Chen,Huaihe Song
Zinc metal batteries have recently emerged as a promising stable and reversible anode aqueous battery. However, due to the serious dendrite problem and hydrogen evolution problem of the zinc metal anode, the practical application of the zinc metal battery is limited. Here, we propose Y2O3 as an effective coating, which inhibits hydrogen evolution and side reactions by physical isolation and simultaneously prevents dendrite growth by ensuring a uniform Zn-ion flux and fast transport channels generated by Maxwell–Wagner polarization, thus improving the stability of batteries. Meanwhile, in situ/ex situ characterizations and different simulations are conducted to investigate in detail the effect of Maxwell–Wagner polarization on the performance of Zn metal batteries. The symmetric Y2O3@Zn anode system exhibits a stable electroplating/stripping performance over 780 h and enables the Zn battery to achieve a Coulombic efficiency of up to 99.81% over 1000 cycles by reducing side reactions. The Y2O3@Zn||MnO2 full cell delivers a high energy density of 301.42 Wh kg–1 at a power density of 205.04 W kg–1. The work provides insights into the reversibility and stability of zinc anodes and provides a promising way to promote the practical application of Zn metal batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xincheng Cai,Junjing Duan,Zhangyi Huang,Lexing Liang,Zhenyu Zhang,Mao Deng,Xiaolan Zhou,Jianqi Qi,Tiecheng Lu
Y2O3–MgO composites are promising mid-infrared transparent materials for extreme environments. However, their optical and mechanical properties are limited by microstructural imperfections, including non-ideal phase fractions, excessive grain growth, and inhomogeneous phase distribution. Conventional coprecipitation struggles to synchronize precipitation of Y3+ and Mg2+ due to their divergent solubility products, leading to compositionally segregated nanopowders and degraded ceramic performance. To address this, we developed a coprecipitation–solvothermal coupling process with precision pH control (9.31–11.56) to manipulate dual-phase equilibria and microstructure. This strategy enhanced supersaturation to accelerate conucleation (via the Gibbs–Thomson effect), enabled complete Mg2+ precipitation at high pH (≥10.84), and achieved atomic-scale precursor homogenization. The pH-optimized nanopowders produced hot-pressed ceramics with a nearly perfect 1:1 phase volume ratio, ultrafine grains (129 ± 4 nm), and high phase homogeneity (αf > 0.9). These yielded excellent properties: 85% maximum transmittance at 6.2 μm (79% at 7 μm, the highest reported values), the broadest cutoff window (1.0–11.5 μm, approaching theoretical limits), and enhanced hardness (11.19 GPa) with toughness (2.43 MPa m1/2). This work introduces pH-mediated phase equilibrium control as a universal paradigm for designing high-performance oxide composites. By resolving fundamental precipitation mismatches, it establishes a general pathway for microstructural optimization in multifunctional ceramic systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Xiaona Ren,Zhipei Chen,Peng Wang,Wenchang Wang,Yao Wang,Changchun Ge
Rare earth oxide (CeO₂/Y₂O₃) reinforced AlCrFeNiCu high-entropy alloy coatings with a Mo interlayer (designated as Mo/CeO₂-AlCrFeNiCu and Mo/Y₂O₃-AlCrFeNiCu) were successfully deposited onto a Zr-4 substrate via high-speed laser cladding. The microstructural characteristics and properties of the composite coatings were comprehensively investigated. The results demonstrate that the Mo interlayer alleviates the thermal mismatch between the substrate and the HEA coatings and, to a certain degree, counteracts the grain refinement effect induced by the rare earth oxides. Overall, it plays a critical role in enhancing interfacial structural stability, mitigating thermal stress, and improving overall coating performance. It effectively optimizes the coating-substrate bonding integrity, reduces susceptibility to high-temperature fretting fatigue and plastic deformation, and significantly lowers the specific wear rate. Furthermore, the Mo interlayer enhances the compactness and continuity of the interface, suppresses the formation of corrosive pathways, and promotes the formation of a thicker, more stable passive film on the coating surface.
研究领域:
材料科学
·
表面工程
·
金属学与热处理
·
腐蚀与防护
·
先进制造技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 10
·118292
·
IF 6.3
Yakun Wang,Yufei Zu,Guoqing Chen
Al 2 O 3 -ZrO 2 (Y 2 O 3 ) eutectic ceramics are promising high-temperature structural materials with excellent thermal stability and mechanical properties. Crystallographic orientation control is effective for tuning their performance. Herein, we investigated the crystallographic orientation rotation of Al 2 O 3 and ZrO 2 phases in the rod-like and lamellar micro-regions into the core of the colonies of Al 2 O 3 -ZrO 2 (Y 2 O 3 ) eutectic ceramics prepared by the seeding melt-grown method. Results show that ZrO 2 phases exhibit diverse growth directions with gradual rotation in both regions. However, Al 2 O 3 phases exhibit distinct rotational behaviors depending on the morphology: in lamellar regions, the crystallographic orientations of both Al 2 O 3 and ZrO 2 phases rotate synchronously, with the misorientation angle per unit length relative to an initial position reaching up to 2.09°·μm −1 ; in rod-like regions, the Al 2 O 3 phase shows negligible rotational displacement. Crystallographic orientational rotation behaviors were measured in these melt-grown eutectic ceramics, providing a research basis for the solidification of oxide eutectics.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）