Article
Materials Science, Ceramics
Qiao Jiang, Daoyuan Yang, Huiyu Yuan, Rui Wang, Mingxuan Hao, Weili Ren, Gang Shao, Hailong Wang, Junyan Cui, Jianhui Hu
Summary: Direct ink writing (DIW) and low-temperature sintering were used to prepare Si2N2O-Si3N4 ceramics, with HPMC addition and silica fume proportion optimized for stable and pseudoplastic slurry. By controlling temperature and additives, high-quality Si2N2O-Si3N4 ceramics with good dielectric properties can be obtained.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Haoqian Zhang, Qiang Liu, Biao Zhang, Jian Ye, Yicheng Jin, Zhaoxin Zhong, Yang Wang, Hao Liu, Feng Ye
Summary: The study shows that the designed microstructures have a significant impact on the mechanical properties of porous Si3N4 ceramics, but a less obvious effect on the dielectric properties. The dielectric constant can be reliably designed based on the porosity, and the mechanical properties can be optimized through microstructure.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Shuang Yin, Yuhang Jiang, Xia Fang, Yang Wang, Jian Yang
Summary: The porous Si3N4 ceramics with excellent mechanical and dielectric properties were successfully fabricated using gelcasting with DMAA gel system as a pore-former. Increasing monomer content led to higher porosity, pore connectivity, and improved flexural strength and fracture toughness, making the ceramics suitable for microwave-transparent applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Renu Gupta, Dong Hyun Kim, Hyo Tae Kim
Summary: In this study, the (Na1-xKx)(2)MoO4 ceramic series with Mo-based glass-free spinel structure was prepared using the traditional solid-state method at low sintering temperature (<650 degrees C). The microwave dielectric properties of the series were analyzed in terms of phase compositions, crystal structure, and microstructure. The results showed that the formation of double-phase (cubic and orthorhombic) played a significant role in the entire (Na1-xKx)(2)MoO4 series. The ceramics exhibited excellent dielectric properties, making them a potential candidate for low-temperature co-fired ceramic (LTCC) substrate applications in high-speed data communications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ruyi Han, Huimin Cao, Bo Li
Summary: The addition of H3BO3 to Ca2V2O7 ceramics significantly affects the microstructure, sintering mechanism, and microwave dielectric properties, resulting in reduced sintering temperature and improved performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Yoji Yasumoto, Taro Kuwano, Hiroki Taniguchi, Shinobu Fujihara, Manabu Hagiwara
Summary: Doping of La3+ into ferroelectric Bi(2)SiO(5) induces disorder in its crystal structure, leading to a transition into a paraelectric phase with superior temperature stability. Bulk La-doped Bi(2)SiO(5) ceramics were fabricated through sintering for potential use in ceramic capacitors.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Ceramics
Pei Wu, Hongyu Yang, Hongcheng Yang, Ling Gui, Yuchen Wang, Qian Liu, Enzhu Li
Summary: In this study, BaSi2O5 ceramics with an orthorhombic structure were successfully synthesized by doping with LBCC glass. The mechanism of low-temperature sintering and the microwave dielectric properties of BaSi2O5 ceramics were investigated. The doping of LBCC glass reduced the sintering temperature of BaSi2O5 and demonstrated good chemical compatibility with silver at a certain doping percentage.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Fang -Fang Wu, Di Zhou, Song Xia, Ling Zhang, Feng Qiao, Li-Xia Pang, Shi-Kuan Sun, Tao Zhou, Charanjeet Singh, Antonio Sergio Bezerra Sombra, Moustafa Adel Darwish, Ian M. Reaney
Summary: Low sintering temperature BVFWx ceramics prepared by solid-state reaction exhibit promising microwave dielectric properties and are suitable for low-temperature cofired ceramic technology and microwave device applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
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
Chemistry, Inorganic & Nuclear
Wugang Lai, Yuanming Lai, Zhouyang Wei, Zan Jiao, Junjie Yu, Peicheng Yang, Ning Ding, Fangyi Huang, Fanshuo Wang, Meng Wei
Summary: In this study, Mg2-xLi2xAl4Si5O18 ceramics were synthesized and their phase composition, crystal structure, and microwave dielectric properties were investigated. The addition of Li2O influenced the densification of the samples, while the relative density and second phase determined the dielectric constant. The densification and packing fraction affected the Qf value, while the second phase and bond valence of the Mg-site determined the temperature coefficient of resonance frequency.
SOLID STATE SCIENCES
(2023)
Article
Crystallography
Jiuyuan Han, Mengjiao Chi, Liu Yang, Bing Liu, Minmin Mao, Hadi Barzegar Bafrooei, Zhongyan Ma, Yingjie Ren, Feng Shi, Ehsan Taheri-Nassaj, Dawei Wang, Kaixin Song
Summary: Dense composites of NaCl-NZO and HB-NZO-NaCl were prepared using the cold sintering process. The resulting ceramic composites showed promising characteristics with comparable permeability and dielectric constants suitable for radio-frequency electronic device applications. These findings indicate potential applications in wireless communication.
Article
Engineering, Manufacturing
Fei Wang, Zijian Li, Yihui Lou, Fangfang Zeng, Mengmeng Hao, Wen Lei, Xiaochuan Wang, Xiaohong Wang, Guifen Fan, Wenzhong Lu
Summary: This paper presents a manufacturing method for low-sintering-temperature RF devices using SLA printing, and discusses the effects of ceramic powder percentage on various properties. It was found that within a certain range, different proportions of ceramic powder led to significant changes in slurry properties, sintering shrinkage rate, dielectric constant, and dielectric loss.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Ceramics
Ruixin Yang, Mingxia Wang, Tianying Qin, Enzhu Li, Chaowei Zhong
Summary: In this study, SrWO4-x wt.% Li2MoO4 (x = 2.5, 5, 7.5, 10) ceramics were synthesized at low temperature using the solid-state synthesis method. The effect of Li2MoO4 on the crystallization, activation energy, microstructure, and sintering process were discussed in detail. Li2MoO4 significantly reduces the sintering temperature of SrWO4 and promotes the shrinkage and densification of the ceramic at low temperature. Specifically, the SrWO4 ceramics containing 5 wt% Li2MoO4 sintered at 875 degrees C exhibits the most favorable microwave dielectric properties, demonstrating potential applications in the field of low-temperature co-fired ceramics (LTCC).
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Xiaomeng Li, Changli Fu, Weichen Xu, Xuetong Zhao, Wan Xu, Fuliang Wang, Jing Guo
Summary: By combining CSP with other sintering technologies, researchers have successfully fabricated low-temperature sintered electro-ceramics with excellent electrical properties. The experimental data demonstrate that this method can achieve high density and improved electrical performance at relatively low temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Zhengwei Li, Zhiwu Xu, Boxu Ren, Jiuchun Yan
Summary: In this study, porous Si3N4 ceramics were successfully soldered using Sn9Zn2Al solder through sonocapillary and cavitation. The results showed that the solder could quickly wet the ceramics and form a tight bond. A geometric model was used to analyze the infiltration mechanism of the solder, showing that acoustic pressure played a key role in the wetting process. Additionally, the wetting mechanism of the solder to the ceramic was analyzed based on cavitation bubble dynamics calculation.
CERAMICS INTERNATIONAL
(2022)
