CERAMICS INTERNATIONAL
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2025
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IF 5.6
Xianjie Liu,Mingyong Liu,Mengyao Yang,Jiahang Fan,Zijiao Guo,Fankai Lin,Qianchao Ma,Yifei Liu,Xin Min,Zhaohui Huang
In this work, the carbon composites were first produced using low-cost electrically calcined anthracite and resource-utilized waste graphite electrode fine powders as raw materials. The strength and toughness of the composite materials were enhanced by introducing carbon fibers as a reinforced phase. The influences of the addition of carbon fibers on the properties of the samples were investigated. The thermal shock stability of the samples was evaluated by the water rapid cooling method, and the LiFePO 4 (LFP) corrosion resistance of the samples was examined using the static crucible method. The results exhibited that the sample (CF-0.15) with 0.15 wt% carbon fiber addition performed favorable physical properties and optimum mechanical strength. Its apparent porosity was 12.10 %, cold modulus of rupture (CMOR) was 11.95 MPa, cold crushing strength (CCS) was 33.37 MPa, and fracture toughness was 697.67 kPa m 1/2 . The residual cold modulus of rupture of CF-0.15 sample was 10.08 MPa and the residual strength ratio was 84.42 % after three thermal shocks at 1000 °C. The presence of carbon fibers provided bridging and pull-out effects, which improved the strength and toughness of the samples. This promotes the dispersion and absorption of thermal stresses in the samples during cycle thermal shock, resulting in the deflection of internal cracks to prevent further damage. The samples presented excellent corrosion resistance in the LFP erosion experiments, demonstrating significant potential to facilitate the development of the lithium battery industry.
研究领域:
材料科学
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2018
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IF 3.057
Wenmin Zhang,Kang Guan,Defang Liu,Cheng Peng,Jianqing Wu
Ceramic membranes play an important role in high temperature gas-solid filtration. However, the thermal stability of the ceramic support at high temperatures has always been a problem. In this study, porous fused silica ceramic supports were fabricated with hexagonal boron nitride as a sintering aid. The results shown that hexagonal boron nitride could inhibit the crystallization of fused silica ceramic particles at high temperature and act as a sintering addictive to reduce firing temperature. The obtained supports have an average pore size of 72 µm, an open porosity of 42%, a bending strength of 16.5 MPa, a Weibull modulus of 8.67 and a gas permeability of 4.23 × 10 5 m 3 /(m 2 h bar). The bending strength of the support remained 16 MPa after 30 cold-hot cycles, exhibiting high thermal shock resistance . After corrosion in 20 vol% H 2 SO 4 solution for 8 h, the weight and the bending strength of the support were diminished by 0.6% and 24.32%, respectively. So, the ceramic support showed good acid corrosion resistance .
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Haoxin Lin,Lin Tian,Xiaoyan Liu,Guocheng Wang,Chongchong Xie,Guohua Li,Chao Tian
In order to improve the comprehensive utilization rate of magnesite flotation tailings and solve its accumulation pollution problem. In this work, Mg 2 SiO 4 -MgO refractories were prepared by solid-phase method using magnesite flotation tailings as raw material and Pr 6 O 11 as additive. The adjustment mechanism of Pr 6 O 11 on the intergranular binding phase of Mg 2 SiO 4 -MgO refractories was investigated and the optimal addition amount of Pr 6 O 11 was determined through thermodynamic calculations, DSC test, phase composition test, microstructure observations and physical property tests. The results show that when Pr 6 O 11 is not added, the intergranular binding phase of Mg 2 SiO 4 -MgO refractories is CaO·MgO·SiO 2 . After Pr 6 O 11 is added, Pr 6 O 11 takes advantage of its high reactivity to extract SiO 2 and CaO from the MgO-SiO 2 -CaO system, which is supposed to synthesize CaO·MgO·SiO 2 , and reacts to produce Ca 2 Pr 8 (SiO 4 ) 6 O 2 , which consumes the reactants for synthesizing CaO·MgO·SiO 2 , thus inhibiting the production of CaO·MgO·SiO 2 . Thereby adjust the refractories intergranular binding phase from low melting point CaO·MgO·SiO 2 (melting point:1498°C) to high melting point Ca 2 Pr 8 (SiO 4 ) 6 O 2 (melting point:1780°C), which resulted in the improvement of the refractories's high temperature resistance and thermal shock resistance. At the same time, Pr 6 O 11 can form solid solution with Mg 2 SiO 4 and MgO to promote the sintering densification of the refractories, and the overall performance of the refractories is optimal when the addition amount of Pr 6 O 11 is 2wt%.
研究领域:
材料科学
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无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2022
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IF 5.532
Jiaxian Fan,Hongna Fan,Zhuo Song,Yajie Guo,Minmin Li,Xin Li,Changjian Qi,Xiqing Xu
Crucible is a key vessel in superalloy smelting, and high-performance crucible is quite important to the development of superalloy. Pointed at the easy cracking and poor thermal-shock stability of Al 2 O 3 crucibles for superalloy smelting, particle gradation was managed in slip casting of Al 2 O 3 crucibles. The ceramic slurry in good dispersion was prepared by optimizing particle gradation, with solid content of 86 wt% and viscosity of lower than 0.5 Pa s. For the crucible with optimized particle gradation, the density was 2.37 g/cm 3 , the linear shrinkage was less than 2%, the porosity was 18.72%, the bending strength was close to 22 MPa and the thermal expansivity was 2.77 × 10 −6 /°C. Strength retention rate was raised to evaluate the thermal shock stability of crucibles, which was up to 73.5% after five-time thermal shock, well meeting the requirements of crucibles for superalloy smelting, and the superior thermal-shock stability was attributed to the uniform network microstructure and low thermal expansivity. The optimal particle gradation in experiments was explained in terms of Dinger-Funk model. This work provides a reference for preparing high-performance Al 2 O 3 crucibles for superalloy smelting with low thermal expansivity as well as excellent thermal-shock stability.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Xinzi Zhong,Liyun Cao,Tian Ji,Jianfeng Huang,Yijun Liu,Xuetao Shen,Yong Zhao,Zhiwen Cheng,Ting Liu
Hierarchical design was applied to core-shell B 2 O 3 @SiO 2 microcapsule, followed by fabrication of the SiC–B 2 O 3 @SiO 2 coating by a combination of entrapping and hot dip processes. Among the C/C-SiC-BS2, C/C-SiC-BS4 and C/C-SiC-BS6 samples, the C/C-SiC-BS4 composite exhibits long-term antioxidant capabilities, with only a 2.30 % mass loss as oxidized at 973 K for 1500 h, and 2.35 % at 1073 K for 2600 h. Furthermore, after enduring 150 thermal shocks between 293 K and 1173 K, its mass loss is only 2.07 %. The XRD patterns detected the existence of B 2 O 3 and SiO 2 phases, and the SEM and EDS analysis proved the borosilicate glass , indicating the excellent performances came from the synergistic self-healing effects of the B 2 O 3 , SiO 2 phases, and borosilicate glass . Thus, within the temperature ranges from 873 K to 1273 K, the oxygen penetration shifts from osmotic state to defect diffusion in coating. This research emphasizes the significance of hierarchical designs for core-shell sacrificial phase in silicate coatings, thereby enhancing their long-term applicability.
研究领域:
材料科学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2023
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IF 5.7
Yage Li,Shuaibing Wu,Feng Liang,Gongye Lv,Yu Tian,Haijun Zhang,Yong Liu,Guoqi Liu
Rod-like h-BN with an average diameter of 2 µm was synthesized at a relatively low temperature of 1200 °C through a catalytic pyrolysis precursor strategy using boric acid and melamine as starting materials, and Co(SO 3 NH 2 ) 2 ·4 H 2 O as a catalyst precursor. Subsequently, novel low-carbon Al 2 O 3 -C refractories were prepared via a replacement of the graphite with the as-synthesized rod-like h-BN. When 1 wt% h-BN rods were added to replace graphite, after 3 h coking at 1400 °C, the cold modulus of rupture, cold compressive strength , oxidation resistance , and thermal shock resistance of the specimen were increased by 16.4%, 24.8%, 31.2%, and 52.2%, respectively, compared with these of the control specimen. Moreover, the introduction of h-BN rods in the matrix enhanced the non-wetting ability of the refractory with molten slag, thus the rod-like h-BN modified low carbon refractory presented better slag corrosion resistance with reference to the specimen without h-BN rods.
研究领域:
材料科学
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耐火材料
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高温性能
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）