Article
Materials Science, Ceramics
Yuanyuan Lv, Lan Zhang, Shuquan Yang, Zhihua Wang, Lin Chen, Jun Sun, Xiaoxiao Li, Jianjun Ding, Kang Zheng, Yi Gong, Xian Zhang, Xingyou Tian
Summary: The study systematically investigated the influence of graphene nanoplatelets on the thermal conductivity of composite materials, showing that the addition of 0.75 wt% GNPs significantly increased the thermal conductivity of the sintered sheets, while maintaining low dielectric constant and dielectric loss. The coefficients of thermal expansion of the sintered sheets displayed a decrease followed by an increase trend, with the GNPs(0.75)/Al2O3/ZBNAS composite having negative and positive CTE values in low and high temperature ranges. Moreover, the graphene-based LTCC materials are considered promising candidates for electronic devices with high thermal conductivity requirements.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Lan Zhang, Shuquan Yang, Meihui Xiao, Lin Chen, Jun Sun, Jianjun Ding, Xiaoxiao Li, Yi Gong, Kang Zheng, Xian Zhang, Xingyou Tian
Summary: In this study, the performance of a low-temperature sintered Bi-B-Si-Zn-Al glass/Al2O3/SiC nanowires composite fabricated by the tape casting method was investigated. The addition of 0.5 wt% SiC nanowires increased the thermal conductivity of the composite, and it also exhibited low thermal expansion and high dielectric constant.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Zheng Sun, Xiaosong Lvu, Weijia Luo, Jingda Guo, Qiuyue Wang, Jingru Hua
Summary: This study investigated the effects of BCu additive on the microstructure and microwave dielectric properties of ZZNT ceramics. The results showed that a small amount of BCu could significantly reduce the sintering temperature and form rutile-like and Zn0.17Nb0.33Ti0.5O2 secondary phases. The BCu-added ceramics also demonstrated excellent chemical compatibility with Ag electrode, making them suitable for LTCC applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Xianfu Luo, Yilong Ma, Bin Shao, Chunhong Li, Kejian Li, Donglin Guo, Dengming Chen
Summary: This study reports on the development of an eco-friendly aqueous tape casting slurry for the production of borosilicate glass/Al2O3 tapes. Different additives were used to improve the dispersion and quality of the tapes, and the resulting composites exhibited promising properties for LTCC applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Cho-Pei Jiang, Yulius Shan Romario, Ehsan Toyserkani
Summary: This study develops a novel tape-casting 3D printing technology that uses bottom-up photopolymerization to fabricate the green body for low-temperature co-fired ceramics (LTCC) that consist of ceramic and copper. The experimental results show that this printing technology has good bonding strength and electrical conductivity, and can print copper circuits within the LTCC green body.
Article
Materials Science, Ceramics
Premysl Stastny, Jana Smieskova, Martin Trunec
Summary: This study describes a method for the production of multilayer tapes using the aqueous epoxy-based gel-tape co-casting of ceramic suspensions. It demonstrates the applicability of this method for the preparation of high-quality fine powder ceramic stacks.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Naoya Iwata, Saori Yamada, Takamasa Mori
Summary: This study aimed to investigate the optimum slurry conditions for green body fabrication regardless of tape or slip casting methods, and examined the influence of pH and dispersant additive on particle dispersion in aqueous dense alumina slurries. It was found that the suitable amount of dispersant differed due to changing solution conditions, and different evaluation methods were required for predicting packing fractions in slip casting and tape casting. Sedimentation test was valid for green sheet, while constant pressure filtration test was suitable for slip casting.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Sabitha Ann Jose, K. A. Krishnakumar, Surendran Kuzhichalil Peethambharan
Summary: In this study, a hazard-free aqueous tape casting protocol for Al2O3-BBSZ LTCC tapes was developed, eliminating the use of VOCs. Optimal amounts of water, binder, and plasticizers were determined to produce smooth, crack-free tapes with impressive mechanical, thermal, and dielectric properties. This eco-friendly protocol shows promise for generating sustainable hybrid electronic circuits.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Materials Science, Ceramics
Wenxin Du, Kailei Lu, Bing He, Xiaolan Zhou, Xu Huang, Jianqi Qi, Tiecheng Lu
Summary: In this study, transparent aluminate oxynitride (AlON) ceramic wafers were successfully fabricated through the direct non-aqueous tape casting of Al2O3/AlN slurry and one-step reaction sintering. The reaction sintered AlON ceramic wafer showed a high transmittance of 73.2% at a wavelength of 1600 nm. This fabrication method provides a smooth and flexible tape without cracks or pinholes in the Al2O3/AlN system, and significantly shortens the preparation cycle of transparent AlON wafers. It offers a feasible way to prepare high-quality transparent AlON ceramics with large lateral sizes and thin thicknesses, and may also promote the application of transparent AlON ceramic wafers.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Natalia Cristina Fontao, Michaela Wilhelm, Kurosch Rezwan
Summary: Asymmetric porous SiOC membranes with different pore characteristics and morphology were successfully produced using the phase inversion tape casting technique. By adjusting the pyrolysis temperature and slurry composition, the structure and surface characteristics of the membrane can be tailored, resulting in improved mechanical strength and water permeation fluxes. The asymmetric structure of the membranes was found to minimize mass transport limitations, showing advantages in water filtration applications.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Jeong-Hun Kim, Hyunseok Ko, Dong-Hun Yeo, Zeehoon Park, Upendra Kumar, Kwan-Hee Yoo, Aziz Nasridinov, Sung Beom Cho
Summary: This study demonstrates how a design strategy coupled with physics-based modeling data can improve the optimization of process parameters. By using physics-based modeling data to "learn" physics knowledge, the accuracy of both forward prediction and inverse optimization has been significantly improved, and the inverse model can accurately optimize parameters that were not considered.
MATERIALS & DESIGN
(2023)
Article
Multidisciplinary Sciences
Sarojrani Pattnaik, Mihir Kumar Sutar
Summary: The study investigated a solution for maintaining the characteristics of investment casting slurry by covering it with argon gas, leading to significant improvements in maintaining slurry properties and internal surface texture using argon gas coverage.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Da Li, Guoli Sun, Xueqiong Ouyang, Pei Zhong, Shuangxi Wang
Summary: In this study, the surface modification process of alumina nanoparticles was investigated to prevent their agglomeration in ceramic slurries. The best modification effect was achieved by modifying the alumina nanoparticles with 2.5 wt% of titanate coupling agent at 60 degrees C for 20 min.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
P. Stastny, Z. Chlup, P. Roupcova, M. Trunec
Summary: A new method for preparing high-strength zirconia tapes was introduced in this study. It was found that sodium ions have a negative impact on the strength and toughness of zirconia ceramic samples. The experimental results demonstrated the significant elastic deformation of zirconia tapes, with the ability to achieve a small bending radius.
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2021)
Article
Materials Science, Multidisciplinary
Changyan Ji, Huijuan Su, Zhi Huang, Xiuying Tian, Ting Zeng, Hengping He, Junna Xu, Jin Wen, Yangxi Peng
Summary: The fluorescent ceramic GdAG:Ce was prepared using aqueous tape casting-isostatic pressing process and high temperature solid state method. The introduction of Gd3+ resulted in smaller XRD peaks, stronger PL emission intensity, and shorter lifetime compared to the non-Gd3+ analogue sample YAG:Ce. This improvement in properties could enhance the performance of white light-emitting diodes (WLED). Furthermore, the practical garnet structure of fluorescent ceramic GdAG:Ce provided good thermal stability, leading to an increase in color rendering index (R-a) and a decrease in correlated temperature (CCT) in the WLED device.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
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)