Article
Materials Science, Ceramics
Haomin Wang, Xiaofeng Du, Yang Shi, Mao Deng, Jun Wang, Jianqi Qi, Zhangyi Huang
Summary: This work investigates the grain-size dependent thermal conductivity of Gd2Zr2O7 ceramics. It finds that the thermal conductivity limit can be reached when the grain size is reduced to around 7.5 nm. The low thermal conductivity can be attributed to the high volume fraction of grain boundary/triple junction phases in the nanocrystalline GZO ceramic, which is comparable to that of the grain phase. This study demonstrates that reducing grain size is an effective strategy to decrease thermal conductivity in polycrystalline materials.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Zhenfei Chai, Zhaohe Gao, Han Liu, Xun Zhang, Gyorgyi Glodan, Ping Xiao
Summary: The study found that sintering temperature and sintering additive content have significant effects on the microstructure and thermal conductivity of SiC ceramics. Increasing sintering temperature promotes grain growth, while higher sintering additive content results in smaller grain size and lower thermal conductivity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Ki Sang Baek, Seung-Wook Baek, Hyunil Kang, Wonseok Choi, Jun-Young Park, Stefan Saxin, Shin Ku Lee, Jung Hyun Kim
Summary: This study reports the electrical conductivity characteristics of SmBa0.5Sr0.5Co2O5+delta (SBSCO) and finds that sintering temperature and current range have an impact on its conductivity. Higher sintering temperature and lower current range result in higher electrical conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Meike V. F. Heinz, Marie-Claude Bay, Ulrich F. Vogt, Corsin Battaglia
Summary: This literature discusses the relationship between the electrical conductivity variation of polycrystalline Na-beta''-alumina and microstructural factors, presents a simple model to explain the conductivity changes, and explores the role of grain size effects in it.
Article
Materials Science, Ceramics
Xiulan He, Tai Jin, Shilong Wang, Ling Li
Summary: Aluminum nitride ceramics were prepared through aqueous gelcasting and pressureless sintering using Y2O3 as additives and curdlan as the gel system. The effects of curdlan content, solid content, Y2O3 content, and sintering soaking time on the microstructure and properties of the ceramics were investigated. Suitable curdlan and solid content contributed to uniform microstructures and high flexural strength of the green bodies. Increasing Y2O3 content and soaking time resulted in enhanced relative density and flexural strength of the sintered bodies. The optimized gelcasting process parameters, Y2O3 content, and soaking time improved the mechanical and thermal properties of the sintered bodies. The nontoxic gelcasting system showed potential for the fabrication of complex-shaped ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Ana G. Storion, Isabela R. Lavagnini, Joao Campos, Joao G. P. da Silva, Sylma C. Maestrelli, Eliria M. J. A. Pallone
Summary: This study aimed to reduce microstructure heterogeneity in flash sintering by using alumina blankets as thermal insulation, which significantly decreased flash onset temperature and grain size heterogeneity. Thermal insulation resulted in up to 480°C temperature reduction for higher electric fields, leading to lower densification and potential energy savings of up to 78% with a more homogeneous microstructure.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Shengjun Liao, Yinghua Zhuang, Jianjun Wang, Changxi Jiang, Lijuan Zhou, Shuang Li, Yunxia Zhao
Summary: By investigating the effects of YF3 and MgF2 on Si3N4 ceramics, it was found that adjusting the YF3/MgF2 ratio appropriately can decrease viscosity, promote mass transfer, and improve the mechanical properties and thermal conductivity of Si3N4 ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Shengjun Liao, Lijuan Zhou, Changxi Jiang, Jianjun Wang, Yinghua Zhuang, Shuang Li
Summary: In this study, silicon nitride ceramics were fabricated using different sintering additives, with samples doped with binary fluorides showing superior thermal conductivity and mechanical properties. The addition of YF3 reduced the grain growth exponent and activation energy, leading to improved properties in the Si3N4 ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Subramani Supriya
Summary: High-quality lead-free relaxor-ferroelectric BCNT electroceramics were fabricated using the modified Pechini method, and the influence of cerium dopant on the material properties was studied. The doping affected the density and sintering temperature, but had a positive effect on crystallinity. BCNT ceramics showed increased grain size and significant changes in shrinkage, making them suitable for commercial applications such as electrode systems and multi-layered structures.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Johannes Rauchenecker, Sabine Schwarz, Werner Artner, Thomas Konegger
Summary: The microstructure and thermal properties of aluminum nitride ceramics are strongly influenced by the sintering conditions. The migration of the secondary phase in the presence of reducing species leads to significant changes in the microstructural evolution and affects the mechanical and thermal properties of the materials. Suitable sintering parameters for aluminum nitride ceramics have been proposed to achieve consistent reducing conditions and generate materials with controllable properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Dongqian Wang, Lu Yin, Albrecht Haenel, Uwe Teicher, Lars Penter, Andre Seidel, Simon Harst, Steffen Ihlenfeldt
Summary: This paper evaluates the performance of a new type of finer-grained, binderless end mill for high-speed machining of hardened steel. The study compares it to polycrystalline cBN end mills and analyzes their cutting performance in terms of cutting force, friction coefficient, milling temperature, and tool wear. The results show that the new end mill has longer tool life and better reliability at high temperatures, indicating its great application potential.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Pallavi Dhama, Aparabal Kumar, P. Banerji
Summary: This study investigates the structural and thermoelectric properties of In Se-4(3), a thermoelectric material with layered structure, and its variable In4Se3-x. It is found that the presence of Se-vacancy in In4Se3-x enhances the power factor and reduces the lattice thermal conductivity, resulting in an improved thermoelectric figure of merit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Jian Dong, Vaclav Pouchly, Mattia Biesuz, Vaclav Tyrpekl, Monika Vilemova, Milad Kermani, Mike Reece, Chunfeng Hu, Salvatore Grasso
Summary: The thermally-insulated Ultra-fast High temperature Sintering (UHS) technology utilizes a fiberboard insulator to reduce energy consumption by 40% compared to the reference set-up. With an ultrafast heating rate, dense and fine-grained microstructures are achieved within 60 seconds.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Ceramics
Hisayuki Imamura, Tsunehiro Kawata, Sawao Honda, Yuji Iwamoto
Summary: In this study, beta-silicon nitride (beta-Si3N4) ceramics with an additive oxide system were fabricated by liquid phase sintering. The microstructure and thermal conductivity of the materials were investigated by adjusting the sintering time and the additive content. The improved thermal conductivity was attributed to the formation of high purity large beta-Si3N4 grains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Chitrarasu Kaliyaperumal, Sundeep Kumar Marndi, Amirthapandian Sankarakumar, Thangadurai Paramasivam
Summary: The influence of grain size on the electrical properties of nanocrystalline La2Zr2O7 (LZO) ceramics prepared by chemical co-precipitation was investigated. The XRD and Raman scattering analysis confirmed the pyrochlore structure of La2Zr2O7. SEM and XPS were used to study the morphology and chemical composition. Impedance spectroscopy revealed that the conductivity was contributed by both grains and grain boundaries, with a non-Debye nature of conduction. The activation energy for grain conduction was consistent across different grain sizes, while the activation energy for grain boundary conduction decreased with increasing grain size, indicating oxygen ion migration. The conduction mechanism was dominated by non-overlapping small polaron tunneling, and ion-ion correlation increased with larger grain size.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Tiankai Yao, Bowen Gong, Lingfeng He, Yinbin Miao, Jason M. Harp, Michael Tonks, Jie Lian
JOURNAL OF NUCLEAR MATERIALS
(2018)
Article
Chemistry, Physical
Weiguang Zhu, Tiankai Yao, Junhua Shen, Wenqian Xu, Bowen Gong, Yachun Wang, Jie Lian
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Zelong Zhang, William L. Eber, Tiankai Yao, Jie Lian, Kalliat T. Valsaraj, Jianwei Wang
ACS EARTH AND SPACE CHEMISTRY
(2019)
Article
Materials Science, Multidisciplinary
Bowen Gong, David Frazer, Tiankai Yao, Peter Hosemann, Michael Tonks, Jie Lian
JOURNAL OF NUCLEAR MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Raul Palomares, Marshall T. McDonnell, Li Yang, Tiankai Yao, Jennifer E. S. Szymanowski, Joerg Neuefeind, Ginger E. Sigmon, Jie Lian, Matthew G. Tucker, Brian D. Wirth, Maik Lang
PHYSICAL REVIEW MATERIALS
(2019)
Article
Physics, Applied
K. Shrestha, T. Yao, J. Lian, D. Antonio, M. Sessim, M. R. Tonks, K. Gofryk
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Chemistry, Physical
E. Kardoulaki, J. T. White, D. D. Byler, D. M. Frazer, A. P. Shivprasad, T. A. Saleh, B. Gong, T. Yao, J. Lian, K. J. McClellan
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Penghui Lei, Tiankai Yao, Bowen Gong, Weiguang Zhu, Guang Ran, Jie Lian
JOURNAL OF NUCLEAR MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Kun Mo, Yinbin Miao, Ruqing Xu, Tiankai Yao, Jie Lian, Laura M. Jamison, Abdellatif M. Yacout
JOURNAL OF NUCLEAR MATERIALS
(2020)
Article
Chemistry, Physical
Xiaolei Guo, Stephane Gin, Penghui Lei, Tiankai Yao, Hongshen Liu, Daniel K. Schreiber, Dien Ngo, Gopal Viswanathan, Tianshu Li, Seong H. Kim, John D. Vienna, Joseph Ryan, Jincheng Du, Jie Lian, Gerald S. Frankel
Article
Materials Science, Multidisciplinary
Marat Khafizov, M. Faisal Riyad, Yuzhou Wang, Janne Pakarinen, Lingfeng He, Tiankai Yao, Anter El-Azab, David Hurley
Article
Chemistry, Physical
Bowen Gong, Tiankai Yao, Penghui Lei, Jason Harp, Andrew T. Nelson, Jie Lian
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Tiankai Yao, Adrian R. Wagner, Xiang Liu, Anter EI-Azab, Jason M. Harp, Jian Gan, David H. Hurley, Michael T. Benson, Lingfeng He
Article
Materials Science, Multidisciplinary
Weiguang Zhu, Guoqing Xin, Spencer M. Scott, Wenqian Xu, Tiankai Yao, Bowen Gong, Yachun Wang, Mingxin Li, Jie Lian
NPJ MATERIALS DEGRADATION
(2019)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)