Article
Chemistry, Physical
Xi Zhang, Xiaoyu Han, Yuedan Zhang, Jinglong Liang, Chuang Wang, Jinsheng Liang
Summary: By optimizing the sintering parameters, Al2O3-CA6-ZrO2/Ni multi-phase composites can achieve excellent mechanical properties, including high density, hardness, and toughness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xi Zhang, Zhu Xiao, Ziqi Xia, Shuo Han, Xiangpeng Meng, Yuyuan Zhao, Zhou Li, Qian Lei
Summary: Cu-TiNi composites with different TiNi volume percentages were prepared, and their microstructure, thermal and mechanical properties were analyzed. The results showed that diffusion of elements occurred at the interface and formed a diffusion layer. TiNi particles were uniformly distributed in the Cu matrix and had a well-bonded interface. The hardness and yield strength increased with the increase of TiNi volume percentage, while the thermal expansion coefficient showed an opposite trend.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Composites
Okan Celik, Abdulkadir Yasar, Berkay Karacor
Summary: Driven by environmental concerns and sustainability issues, researchers have developed novel composite structures in various industries. This study focuses on designing and manufacturing aramid and basalt fiber reinforced polymer hybrid composites as an alternative to carbon fiber reinforced polymer (CFRP) composites. Different fiber ratios and stacking sequences were used to examine their effect on mechanical characteristics. Test results showed that tensile strength was dependent on fiber ratio and sequence, with CFRPs having the highest tensile strength. Impact test results revealed that basalt/aramid fiber hybrid composites had higher energy absorption capability compared to CFRPs. Additionally, increasing basalt fiber ratio increased water absorption capacity, while using aramid fiber in the upper layer decreased ignition loss and increased hardness values. Scanning electron microscopy analysis showed weaker fiber-matrix bonding in hybrid samples compared to CFRPs.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Mathew Seena, Husna Jan, V. Prasad
Summary: This study reports the structural and dielectric properties of PVDF composites with FCNT prepared by hot pressing method, revealing an increase in overall polar phases and more gamma phases in the samples. The dielectric behavior and conductivity changes with hot pressing samples were studied through permittivity, electric modulus, and AC conductivity measurements.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Yaxiong Liu, Yehong Cheng, Denghao Ma, Ning Hu, Wenbo Han, Dazhao Liu, Shuai Wu, Yumin An, Anzhe Wang
Summary: By using ultrasound-assisted fiber separation technique and low temperature hot-pressing, ceramic slurry can be impregnated into continuous carbon fiber bundles during direct ink writing, leading to the fabrication of high-performance ceramic matrix composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
He Zhang, Liangcao Yin, Qingfeng Liu, Yazhong Chen, Shi Jin, Kesong Xiao, Huanyu Zhu, Xianlong Zhang, Xueping Wu
Summary: Halloysite-based mullite/carbon composites were fabricated using hot-pressing technique with low-cost HAL clay and chitosan. The study investigated the effects of sintering temperatures and carbon on the evolution of phases, microstructure, density, strength, and toughness of the composites. The incorporation of carbon enhanced the formation of silica-rich liquid phase and mullitization due to its excellent thermal conductivity, resulting in improved mechanical properties and electrical conductivity.
APPLIED CLAY SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yufei Liu, Yikai Zhan, Min He, Chengjun Xiao, Shan Liu, Shuhao Qin, Jie Yu
Summary: Polyamines with different amino numbers were grafted onto the surface of carbon fiber to improve the interfacial properties and mechanical properties of carbon fiber/polyamide 6 composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Yunpeng Ding, Zhiai Shi, Zhiyuan Li, Sijia Jiao, Jinbiao Hu, Xulei Wang, Yizhuang Zhang, Hanying Wang, Xiaoqin Guo
Summary: In this study, CNTs/refined-AZ61 composites were prepared by ball milling refinement and dispersion methods, achieving uniform dispersion of CNTs and improved yield strength and compressive strength. The highest strength was achieved when the volume fraction of CNTs was 1 vol.%.
Article
Chemistry, Physical
Ying Xu, Zhehao Zhang, Debao Liu, Yue Zhao, Xiaohao Sun
Summary: By using hot extrusion and multi-pass equal channel angular pressing (ECAP), the Zn-1Mg alloy and 1 beta-TCP/Zn-1Mg composites were processed and their microstructure, mechanical properties, corrosion behavior, and biocompatibility were investigated. The results showed that the 1 beta-TCP/Zn-1Mg composites processed by 8 passes of ECAP had the smallest grain size, highest compressive yield strength, and good biocompatibility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Masoumeh Dehghanzadeh Alvari, Mahdi Ghassemi Kakroudi, Behnam Salahimehr, Reza Alaghmandfard, Mehdi Shahedi Asl, Mohsen Mohammadi
Summary: The ZrB2-20 vol% SiC-5 vol% B4C composite prepared by hot pressing at 1850 degrees C showed high density, good mechanical properties, and distinct oxidation behavior with different layers formed during the oxidation process.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yi Xiong, Zheng Ye, Jihua Huang, Jian Yang
Summary: SiCf/Ti3SiC2 composites were fabricated by hot isostatic pressing using Ti3SiC2 powder and SiCf as starting materials at 1200°C for 2 hours. The composites exhibited improved flexural strength and microhardness with increasing SiCf content, but also showed enhanced oxidation rate.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Francois Marais, Iakovos Sigalas, David Whitefield
Summary: The addition of tetragonal 3mol% Y2O3 - ZrO2 into a MgAl2O4 spinel matrix improved the hardness, fracture toughness, and biaxial flexural strength of the materials, while also reducing the mean grain size.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Mostafa Eid, Saleh Kaytbay, Omayma Elkady, Ahmed El-Assal
Summary: In this study, CF/Al composites with different weight fractions and surface modifications were fabricated using a hot coining technique, revealing that Cu-coated CF samples exhibited superior microstructure and mechanical properties compared to uncoated samples. Uncoated CF/Al composites showed significant improvements in microhardness and wear properties at 10% CF, but a decrease in compressive strength at 20% CF. The results suggest that surface modification of CF can enhance the microstructure and mechanical properties of CF/Al composites.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Manufacturing
Nekoda van de Werken, Pratik Koirala, Jafar Ghorbani, Derek Doyle, Mehran Tehrani
Summary: This study investigates the use of hot isostatic pressing (HIP) to post-process additively manufactured continuous carbon fiber reinforced polyetheretherketone (PEEK) composites to improve their mechanical properties. The research found that increasing the HIP treatment temperature can reduce void content but excessive crystallinity may decrease the composite properties. The study suggests that HIP is a fast and robust method to enhance the performance of AM composites, while caution should be taken to avoid excessive crystallization during post-processing.
ADDITIVE MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Aiyang Wang, Chun Liu, Lanxin Hu, Tian Tian, Qianglong He, Weimin Wang, Hao Wang, Zhengyi Fu
Summary: This study investigated the effects of different sources of graphene and homogenization methods on the microstructure and mechanical properties of B4C composites. The results showed that different homogenization methods led to variations in fracture toughness and flexural strength of the B4C composites. Fractography revealed processing flaws as the main fracture origins in the form of structural heterogeneities, graphene agglomerations, and interfacial porosity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
