Article
Materials Science, Ceramics
Mitang Wang, Qingshuang Zheng, Aiying Chen, Ying Li, Xiaowei Zhang, Dongliang Zhang, Siqingaowa Jin, Dehua Xiong, Wei Deng
Summary: The study investigates the effect of various crystals on the hardness and thermal expansion coefficient of YAS glass, revealing different crystallization mechanisms and volume fractions of crystals can lead to differences in these properties.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Liangbo Sun, Xiaosong Shi, Xinyu Liu, Jian Fang, Chunfeng Liu, Jie Zhang
Summary: This study investigated the joining of Cf/SiC and Si3N4 using glass and identified direct bonding as the main interfacial bonding mechanism. The joint showed a maximum shear strength of -34 MPa and remained at -13 MPa after thermal shock for 10 cycles. Bubbles in the glass filler were found to be the main factor causing degradation of joint performance. Improving the high temperature resistance of joining materials is suggested for application of this joint structure.
CERAMICS INTERNATIONAL
(2021)
Article
Crystallography
Zhen Pei, Haixiao Huang, Xingzhong Guo, Jinming Zhang, Mingxing Chen
Summary: MgO-Al2O3-SiO2 (MAS) glass-ceramics with controllable crystalline phases were prepared via melting method and heat treatment. The effects of glass components on crystallisation kinetics, nucleation, crystallisation, and properties were investigated. The composition influenced the crystallisation temperature, activation energy, nucleation temperature, and time, as well as the relative proportion of crystalline phases.
Article
Engineering, Manufacturing
Meng Li, Hai-Lu Huang, Jia-Min Wu, Ya-Ru Wu, Zhang-Ao Shi, Jing-Xian Zhang, Yu-Sheng Shi
Summary: In this study, Si3N4 ceramics were successfully fabricated by DLP technology using Si3N4 powder coated with Al2O3-Y2O3 sintering additives. The research systematically studied the effects of the coating amount of sintering additives on the properties of the ceramics. The results provide an experimental basis for DLP forming Si3N4 and other non-oxide ceramics.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Liqiang Zheng, Shimin Liu, Lianjie Tong, Shiqing Xu
Summary: The Vickers indentation centers of glass have a densification effect on the glass, affecting its crack resistance and toughness. Raman spectroscopy and molecular dynamics simulations were used to study the structural contribution to densification in Na2O-Al2O3-SiO2 glass. The results showed that the structure of the densification zone shrinks and reorganizes with increasing loading, with an increase in non-bridging oxygen (NBO) content and corresponding modifier ions indicating shear behavior during densification.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Tian Xiaokun, Wu Wenxu, Liu Xin, Zhao Jingang, Chen Junzhu, Qu Ya, Xu Yanchao, Liang Xunmei, Yue Yunlong, Kang Junfeng
Summary: This study investigated the structure, thermal stability, spinnability, and fiber tensile strength of CaO-MgO-Al2O3-SiO2 glasses with SiO2 replaced by Al2O3. Results showed that increasing the molar ratio of Al2O3 to SiO2 led to an increase in the polymerization degree of the glass network structure, resulting in higher Tg and thermal stability. The characteristic temperatures and fragility of glassy melts also increased with the increase in Al2O3 to SiO2 ratio. Moreover, the fiber spinnability parameters showed a different trend as the Al2O3 to SiO2 ratio increased, but both indicated the feasibility of continuous fiberglass production.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Zhengdao Liu, Zongwei Tong, Sheng Yue, Xiaolei Li, Huiming Ji
Summary: By designing and preparing a Si3N4/BAS coating with a heterogeneous-layer structure, the issue of stress cracks caused by sintering mismatch was effectively solved, improving the stability and performance of porous Si3N4 ceramics coatings.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Zongwei Tong, Zhengdao Liu, Huijun Yu, Baojie Zhang, Xiaolei Li, Dong Su, Huiming Ji
Summary: The Si3N4-m-BAS composite has excellent dielectric properties, low density, and low thermal expansion coefficient. A dense Si3N4-BAS coating was successfully prepared on porous Si3N4 ceramic, improving its water resistance and ensuring dielectric performances. The coating exhibited low water absorption, high bonding strength, and self-healing properties during thermal shock tests.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Applied
Mitang Wang, Ao Li, Xiaowei Zhang, Dongliang Zhang, Siqingaowa Jin, Dehua Xiong, Wei Deng
Summary: The addition of Y2O3 was found to improve the water resistance of the glass. With increasing Y2O3 content, the mass loss and pH in leaching solution decreased. Additionally, Y2O3 addition also affected the glass structure and ion migration characteristics.
JOURNAL OF RARE EARTHS
(2022)
Article
Materials Science, Ceramics
Mariana Fatobene Ando, Sindy Fuhrmann, Zhiwen Pan, Bruno Poletto Rodrigues, Tatsuya Mori, Stefan G. Ebbinghaus, Katrin Wondraczek, Suguru Kitani, Lothar Wondraczek
Summary: By varying the ratio of B2O3 to SiO2 in SiO2-Al2O3-B2O3 Yb-laser host glasses, an optimal B/Al ratio can be found to maintain mixture stability and modulate the glass structure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Pavel Andreev, Pavel Drozhilkin, Lyudmila Alekseeva, Ksenia Smetanina, Elena Rostokina, Stanislav Balabanov, Maksim Boldin, Artem Murashov, Gleb Shcherbak
Summary: The ceramic samples made from silicon nitride (Si3N4) powder mixtures fabricated by spark plasma sintering were investigated. Wet chemical methods were used to prepare the powder mixtures from commercial alpha-Si3N4 powder and Y2O3-Al2O3 sintering additive. The sintering process, powder mixtures, and ceramic samples were characterized, and the properties such as density, microhardness, and fracture toughness were measured. The amount of sintering additive affected the shrinkage temperature and the amount of beta-Si3N4 in the ceramics.
Article
Materials Science, Ceramics
Le Wang, Shangwu Fan, Shaobo Yang, Biao Ji, Chenghua Luan, Bohan Zheng, Juanli Deng, Laifei Cheng
Summary: The study investigated the joining performance of CYAS glass powder sintered under different temperature conditions with SiCf/SiC composites. The joint prepared under 1400 degrees C/30 min condition was the densest, defect-free, with the highest shear strength.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Sung Il Yun, Mi Rae Youm, Sahn Nahm, Sang Whan Park
Summary: The study successfully prepared macro-porous SiC ceramics with adjustable porosity and pore size by controlling the amount of bonding additive. At different sintering temperatures, the porosity and flexural strength showed different changing patterns, while the electrical resistivity was also influenced by the components of the bonding additive.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
B. K. Sudhakar, N. Rama Krishna Chand, Vennela Tirupati, P. V. S. Sairam, G. Ravi Kumar, G. Srinivasa Rao, Ch Srinivasa Rao
Summary: Sesquioxides (Al2O3, Y2O3, Sb2O3) doped Oxy fluoro Cobalt borate novel luminescent glasses were prepared by melt quenching method. The structural characteristics of these glasses were studied using XRD, SEM, and EDS techniques. The density change in all series of glasses indicates the introduction of cobalt/Alumina/Antimony/Yttrium ions into the borate glass network with increasing dopant concentration. FTIR and IR spectra show an increase in octahedral occupancy of cations Co2+, Y3+, Sb3+, and Al3+ ions in the glass network with the increase of their concentration. The prepared glasses exhibit efficient luminescence of Cobalt ions, with the Al2O3 series showing the highest emission cross sections compared to other series.
Article
Materials Science, Ceramics
Chenxiong Gao, Xiangxun Zhao, Bo Li
Summary: The addition of Y2O3 in MAS glass-ceramics enhances crystallinity and promotes the formation of Indialite, leading to adjustments in thermal expansion coefficient. Proper amounts of Y2O3 improve densification and crystal phase precipitation during the sintering process, resulting in significantly enhanced mechanical properties.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Morsi M. Mahmoud, Guido Link, Manfred Thumm
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Materials Science, Ceramics
Mohamad Nageeb Hassan, Morsi Mohamed Mahmoud, Ahmed Abd El-Fattah, Sherif Kandil
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2015)
Article
Materials Science, Ceramics
Morsi M. Mahmoud, Diane C. Folz, Carlos T. A. Suchicital, David E. Clark
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2015)
Article
Materials Science, Ceramics
Morsi M. Mahmoud, Manfred Thumm
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2015)
Review
Materials Science, Ceramics
Mohamad Nageeb Hassan, Morsi Mohamed Mahmoud, Ahmed Abd El-Fattah, Sherif Kandil
CERAMICS INTERNATIONAL
(2016)
Article
Chemistry, Physical
S. Ahmad, M. Herrmann, M. M. Mahmoud, H. Leiste, W. Lippmann, H. J. Seifert
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
Mohamad Nageeb Hassan, Morsi Mohamed Mahmoud, Guido Link, Ahmed Abd El-Fattah, Sherif Kandil
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Materials Science, Ceramics
S. Ahmad, M. Herrmann, M. M. Mahmoud, W. Lippmann, A. Hurtado, H. J. Seifert
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2016)
Article
Chemistry, Physical
Yuantao Cui, Morsi M. Mahmoud, Magnus Rohde, Carlos Ziebert, Hans Juergen Seifert
SOLID STATE IONICS
(2016)
Article
Chemistry, Physical
Morsi M. Mahmoud, Yuantao Cui, Magnus Rohde, Carlos Ziebert, Guido Link, Hans Juergen Seifert
Article
Materials Science, Ceramics
Jianhui Peng, Zhiwei Peng, Zhongping Zhu, Robin Augustine, Morsi M. Mahmoud, Huimin Tang, Mingjun Rao, Yuanbo Zhang, Guanghui Li, Tao Jiang
CERAMICS INTERNATIONAL
(2018)
Editorial Material
Mathematics, Applied
Joseph Krasil'ishchik, Volodya Rubtsov
JOURNAL OF GEOMETRY AND PHYSICS
(2014)
Article
Chemistry, Physical
Sarfraz Ahmad, Morsi M. Mahmoud, Hans Jurgen Seifert
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Morsi M. Mahmoud
Summary: The native oxide layer on copper metal particles has a significant impact on sintering behavior during microwave heating. This layer absorbs microwave energy and heats up quickly, leading to the reduction process. The oxide layer is found to be unevenly distributed and its thickness depends on particle size.
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)
