CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Longfei Li,Yunguang Yin,Chenyu Mi,Youmei Wang,Yongshuai Xie,Luyi Zhu,Xinqiang Wang,Benxue Liu,Guanghui Zhang
In this paper, DyTaO 4 fiber membrane and fiber sponge were successfully prepared by electrospinning for the first time from new precursors of Dy and Ta. DyTaO 4 fibers were crystallized at only 430 °C from amorphous precursor fibers and without phase transformation up to 1600 °C. The fiber membranes have tensile strength (0.75 ± 0.20 MPa @ 800 °C) and flexibility, exhibits excellent flexural and compressive resilience properties, which can replace thermal insulation layer in firefighting suits and exhibit excellent thermal insulation properties and ablation resistance. The fiber sponge with the density of about 65 mg·cm −3 has low thermal conductivity of 23.5 and 86.4 mW·m −1 ·K −1 at room temperature and 1000 °C, respectively. Butane gun flame as heat source, the sample with the thickness of 25 mm can reduce the temperature from 1300 °C to 150 °C. After 600 s, the surface hardness of the fiber sponges was increased, but the sample still maintained excellent flexibility. This work provides a new way for rare-earth tantalates to meet high-temperature flexible applications by fully utilizing their advantages
研究领域:
材料科学
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热力学工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yukun Cao,Zhenfei Lv,Ke Zhang,Chong Lan,Mengke Fan,Xu Lu,Yanghui Ke,Wenbo Guo,Yixian Yang,Xin Wang,Xiulin Shen
Using waste electric porcelain to produce refractory bricks is a viable technology. However, these bricks currently have lower mechanical strength compared to those made from mineral raw materials. This study optimized the proportions and sintering process to develop high-strength refractory bricks from waste electric porcelain. The impact of physical phase, crystallinity, sintering temperature, and fly ash content on the bricks properties was examined. The research found that low crystallinity in waste electric porcelain leads to disorganized growth of mullite nano whiskers at high temperatures, reducing mechanical strength due to insufficient support structures and stress concentration zones. The addition of fly ash promotes the formation of uniformly dispersed mullite columns through non-uniform nucleation, significantly improving mechanical properties by creating a collective tetrahedral structure. Bricks with 20 wt% fly ash sintered at 1440 °C achieved a flexural strength of 77.3 MPa, a compressive strength of 156 MPa, and an apparent porosity of 10.89 %. High-temperature simulations indicate that these bricks exhibit good compressive strength and deformation resistance, with no adhesion observed. These high strength refractory bricks have promising potential for use in various high-temperature applications, including kiln linings, high-temperature flue, high-temperature support components and other industrial processes where durability and thermal stability are critical.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
MATERIALS LETTERS
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2020
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IF 3.204
Wanqi Zhao,Panpan Lin,Tiesong Lin,Peng He,Weimin Long,Ruyu Tian
Owing to the isothermal solidification of eutectic Au-Si filler, GH3039 joints were successfully manufactured at 430 °C. After Ti modified, GH3039 joints that could endure 800 °C were creatively achieved through the transformation of reaction layers. Dispersed Ni 49 Ti 14 Si 37 whiskers and CrSi 2 fine particle layer formed at the interface instead of continuous Ni 3 Si layer. This improved the joint shear strength to 131 MPa at room temperature and 15 MPa at 800 °C. Joining at low temperature but applying at high temperature offers a new option for the dissimilar bonding of Ni-based superalloy and ceramics that is in need of the residual stress alleviation.
研究领域:
材料科学
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焊接工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 6
·5526-5535
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IF 2.195
Yang Fan,Hu Bo,Peng Ye,Hang Chunjin,Chen Hongtao,Lee Changwoo,Wei Jun,Li Mingyu
A silver (Ag) composite paste was fabricated based on Ag nanoparticles (NPs) and Ag microflakes (MFs). Robust interconnections were achieved after sintering in the temperature range of 150–225 °C. The shear strengths of the Ag MF + NP joints before and after thermal shock from − 50 to 150 °C for 1000 cycles were 155.7 ± 14.5 MPa and 78.4 ± 20.8 Mpa, respectively. The results show that the Ag composite paste not only has similar sintering properties to the Ag NP pastes but also exhibited superior mechanical reliability due to the addition of the Ag MFs. In addition, the sintered properties of different Ag pastes were discussed in terms of the coating organics, thermal behaviour and microstructure. The fracture modes after the shearing tests were analysed in detail. The Ag composite paste provides a potential solution for high-temperature applications.
研究领域:
材料科学
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电子工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 11
·6435-6444
·
IF 3.502
Zhuo Yu,Jiangtao Zeng,Liaoying Zheng,Wenbing Liu,Guorong Li,Abdelhadi Kassiba
The requirement for ferroelectric ceramics with a high Curie temperature and a high piezoelectric coefficient remains an important research task for high-temperature sensors and actuators applications. (0.76-x)BiFeO 3- 0.24 PbTiO 3- x Ba(Sn 0.2 Ti 0.8 )O 3 (BF-PT-BST) piezoelectric ceramics were fabricated using the solid-state reaction method. XRD analysis indicated that the incorporation of large ionic radius Ba 2+ at A-site and nonferroelectric-active Sn 4+ at B-site generated a decrease in the tetragonality degree c/a. A wide multiphase coexistence region was formed with the content of BST ranging from 0.13 to 0.28. The enhanced piezoelectric coefficient ( d 33 ~ 200pC/N) was achieved while maintaining a high Curie temperature ( T C ~ 500°C) and a high depolarization temperature ( T d ~ 450°C) for the composition of 0.6BF-24PT-0.16BST. TEM patterns provided clear evidence for the presence of nanodomains (~2nm) would be the predominant source for the enhanced piezoelectricity for the composition x = 0.20. The designed BF-PT-BST ternary system provides great potential for high-temperature piezoelectric applications.
研究领域:
材料科学
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物理学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 12
·11005-11010
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IF 2.195
Ma Qilu,Zhao Qing,Jia Xuemei,He Donglin,Chang Aimin
This paper had reported a new conception about the bilayer negative temperature coefficient (NTC) thermistors ceramics. To be specific, the ceramics were constituted by two layers, among which, the perovskite-structured LaMnO 3 was used to maintain the NTC properties of the material, while the LaMnO 3 –Y 2 O 3 composite ceramic was selected due to its resistance. The bilayer NTC thermistors were successfully fabricated according to the classical uniaxial pressing method in this study. After sintering at 1350 °C for 6 h, the two layers could well integrate with each other, without any cracks. Moreover, the values of ρ 500 , B 500/900 constant and activation energy of the NTC thermistors were within the ranges of 2.20 × 10 5 –1.46 × 10 8 Ω cm, 6293–11218 K, 0.543–0.968 eV, respectively. Such ceramics would be suitable for the high temperature application of NTC thermistors.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ningning Dong,Liuxin Chao,Yue He,Bangjun Li,Yun Zhu,Lu Liu,Guobing Ying
Si 3 N 4 /BN composites were fabricated via hot-pressing sintering, achieving outstanding mechanical properties with flexural strength of 623.41 MPa and fracture toughness of 10.22 MPa·m 1/2 - through structural optimization. Key factors contributing to these properties included the use of finer Si 3 N 4 powder, unidirectional fiber alignment, and an optimized fiber diameter of 0.95 mm, which enhanced densification. The residual strength of samples subjected to oxidation testing at 1000-1400 °C for 1-64 h was measured. Notably, samples oxidized at 1000 °C for 4 h exhibited a 5.04% increase in flexural strength compared to their room-temperature strength, attributed to SiO 2 healing the microcracks. At 1200 °C, needlelike Y 2 Si 2 O 7 crystals formed, while higher temperatures (up to 1400 °C) and prolonged oxidation led to their dissolution and the precipitation of platelike aluminosilicates. These microstructural transformations were found to critically influence the residual strength, highlighting the intricate relationship between oxidation conditions, phase evolution, and mechanical properties in Si 3 N 4 /BN composites.
研究领域:
材料科学
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高温材料
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复合材料设计
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结构力学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Kong Xi,Yang Letao,Meng Fanqi,Zhang Tao,Zhang Hejin,Lin Yuan-Hua,Huang Houbing,Zhang Shujun,Guo Jinming,Nan Ce-Wen
Ceramic capacitors with ultrahigh power density are crucial in modern electrical applications, especially under high-temperature conditions. However, the relatively low energy density limits their application scope and hinders device miniaturization and integration. In this work, we present a high-entropy BaTiO 3 -based relaxor ceramic with outstanding energy storage properties, achieving a substantial recoverable energy density of 10.9 J/cm 3 and a superior energy efficiency of 93% at applied electric field of 720 kV/cm. Of particular importance is that the studied high-entropy composition exhibits excellent energy storage performance across a wide temperature range of −50 to 260 °C, with variation below 9%, additionally, it demonstrates great cycling reliability at 450 kV/cm and 200 °C up to 10 6 cycles. Electrical and in-situ structural characterizations revealed that the high-entropy engineered local structures are highly stable under varying temperature and electric fields, leading to superior energy storage performance. This study provides a good paradigm of the efficacy of the high-entropy engineering for developing high-performance dielectric capacitors.
研究领域:
材料科学
·
电气工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Lei Han,Longhao Dong,Faliang Li,Hongjuan Duan,Haijun Zhang,Guangqiang Li,Quanli Jia,Shaowei Zhang
Recently, high-performance ceramic aerogels (CAs) have become a research hotspot because of their multi-functional properties. Compared to their oxide counterparts, non-oxide CAs show better thermal shock resistance and other high-temperature properties, making them suitable for applications in harsh environments. In this work, Si 3 N 4 -BC x N-TiN ceramic aerogels (SBCNT CAs) with molar ratios of B/C/Si/Ti = 2:1:5:5 were synthesized at 1623 K for 3 h via foam-gelcasting, from Si, Ti, melamine and boron acid raw materials. The prepared SBCNT CAs containing 91.0% porosity exhibited the highest compressive strength up to 1.0 MPa, and thermal conductivity of 0.144 W/(m·K) at 298 K. They also exhibited excellent service performance at 1473 K in Ar, demonstrating their great potential for high-temperature applications.
研究领域:
材料科学
·
无机非金属材料
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yu Jiang,Qian Wang,Sisi Tian,Yan Si,Yun Bai,Jingyu Li,Zhenhua Luo,Dong Wang,Tong Zhao
Microcapsules of high-temperature phase change materials (PCMs) with excellent heat storage capability have numerous applications. Fluoride has a higher phase change temperature and enthalpy value, confirming the significance of using fluoride as a phase change material in high-temperature applications. The authors created a novel fluoride microcapsule with a single carbon shell that can withstand volume expansion during the solid-liquid phase change at high temperatures. Initially, a phenolic resin shell was encapsulated onto the surface of the fluoride particles via a water-induced phase separation process. The phenolic resin shell was then cross-linked and carbonized to obtain the fluoride@carbon microcapsule. The structure and composition of the microcapsules were confirmed by SEM, FT-IR, EDS , TGA , and XRD results. DSC was used to evaluate the enthalpy of the microcapsules and PCMs. The magnesium fluoride@carbon (MgF 2 @C) microcapsules had a high phase change temperature of 1262 ℃ and enthalpy of 718.4 kJ/kg, and the lithium fluoride@carbon (LiF@C) microcapsules had a high phase change temperature of 840 ℃ and enthalpy of 458.2 kJ/kg. The MgF 2 @C microcapsules have the highest phase change temperature of any PCM microcapsule reported. The structure of the microcapsules was well preserved even after several heat-cool cycles, with no leakage detected, demonstrating excellent thermal stability. This technique can be used to create a variety of PCMs microcapsules, such as fluoride, alloy, metal, and more.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Yi-Wei Li,Xinyu Ai,Ruixiang Guo,Yeming Zhai,Kai-Ge Zhou
Swelling significantly limits the performance and practical applications of two-dimensional (2D) membranes in aqueous environments. Here, we present an innovative "armor strategy" to enhance the anti-swelling performance of negatively charged 2D membranes, using vermiculite membranes (VM) as a model system. By spin-coating polyethyleneimine (PEI) onto the membrane surface and cross-linking with trimesoyl chloride (TMC), a robust protective layer was formed. The resulting VM-PEI-TMC membrane (VPTM) exhibits remarkable swelling resistance, with a swelling rate of only 0.83%, compared to 23.70% for unmodified VM. Practical applications of VPTM in ion sieving, dye rejection, and high-temperature operations demonstrated stable performance, with rejection rates of methylene blue (MB), rhodamine B (RB), and potassium ferricyanide (PF) exceeding 95% at 80°C. Furthermore, the universality of the armor strategy was established by applying it to graphene oxide membranes (GM), achieving a swelling rate reduction from 55.93% to 5.02%. These results highlight the versatility and effectiveness of the armor strategy, providing a promising pathway for developing high-performance, anti-swelling 2D membranes for environmental and energy applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yinan Nie,Yang Hu,Nan Xin,Yifei Li,Xin Zhao,Min Zhang,Guihua Tang
High temperature exposure is commonly encountered in aerospace and industry, necessitating materials capable of providing both thermal insulation and thermal energy conversion. However, current thermoelectric aerogels often face dual challenges of constrained application temperatures (300–400 K) and prohibitively high costs due to substrate material limitations. In this study, a cost-effective graphite aerogel was fabricated using the directional freeze-drying method for integrated thermal insulation-thermoelectric applications across a wide temperature range. A pioneering Voronoi diagram-based electrical conductivity model featuring fractal lamellar structures was proposed with below 5% deviation between simulation and experimental data, which enables analysis of electrical transport properties under different densities of the lamellar structure, providing in-depth mechanism analysis of the interplay between microstructure and thermoelectric performance. By modulating the oriented lamellar skeletal structure, this aerogel achieved an efficient electrical carrier transportation of 48.28 S·cm −1 and an effective suppression of thermal conductivity to 0.585 W·m −1 ·K −1 at 923 K. Remarkably, the aerogel exhibits a 2–3 orders of magnitude enhancement in cost-normalized electrical conductivity over current-generation thermoelectric aerogels. Due to the band degeneracy effect, the Seebeck coefficient shows a significant increase when the temperature exceeds 773 K and reaches 96.84 μV·K −1 at 923 K. The hierarchically structured graphite aerogel exhibits exceptional high-temperature thermoelectric performance with a peak ZT value of 0.036, creating an innovative framework for high-temperature thermal management and energy conversion in extreme environments.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）