Article
Materials Science, Ceramics
Melissa Moos, Claudia Mohl, Olaf Reichert, Gregor Ohnemueller, Nico Langhof, Stephan Baz, Thorsten Opel, Stefan Schaffoner, Gotz T. Gresser
Summary: This study solves the problem of high melt viscosity of thermoplastics leading to fiber bundle infiltration by using C/C-SiC based on a novel short fiber Cf/PEEK fiber hybrid yarn. The fabricated C/C-SiC material exhibits favorable mechanical properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Roman Svoboda
Summary: This article extensively analyzes the performance of the Fraser-Suzuki function in the mathematical deconvolution of crystal growth kinetic processes. It is found that the function is suitable for describing processes with moderate negative asymmetry and performs well in separating processes following single-exponent kinetic models. Furthermore, combining the Fraser-Suzuki deconvolution with the kinetic analysis using the nth order autocatalytic model yields reliable results.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Fanqiang Lin, Chongsheng Wu, Qisheng Yin, Yuanming Lai, Yingli Liu
Summary: In this study, the effect of Ba substitution on the spiral magnetic structure and magnetoelectric effect in polycrystalline Z-type hexaferrites was systematically investigated. The results showed that Ba substitution significantly improved the magnetoelectric coupling coefficient and extended the magnetic field range for the appearance of magnetoelectric signals. These improvements were attributed to the decrease of Fe-O-Fe bond angle, reduction of cone angle in the transverse conical spin structure, and change in the distribution of magnetic Co ions caused by Ba substitution.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Iurii Bogomol, Elmira Ferkhatly, Serhii Ponomarchuk, Yaroslav Zaulychnyi, Myroslav Karpets, Ievgen Solodkyi
Summary: Directionally solidified B4C/(Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2 eutectic high-entropy ceramics were prepared by the floating zone method. The increase in solidification rate was found to enhance the hardness and fracture toughness of the ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hyun Lee, Gyu-Bin Choe, Young -Hag Koh, Hyoun-Ee Kim
Summary: In this study, photocuring-assisted emulsion was used to prepare porous hydroxyapatite spheres with unique porous structures. The camphene content was found to affect the porosity of the spheres.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jing'an Kong, Yulei Zhang, Wenhan Gai, Guohui Chen, Yunzhou Lin, Hanhui Wang, Hejun Li
Summary: In this study, TaC/SiC alternate coatings were fabricated on C/C composites by structural optimization, which improved their ablation resistance at high temperatures. Among the samples with different sublayer numbers, the four-layer alternate coating exhibited the best ablative performance, likely due to the increased toughness in the alternate structure, synergistic effect of the compound oxide, and the reliability of the sublayers in resisting scouring and blocking oxygen.
JOURNAL OF THE EUROPEAN 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
Milad Kermani, Jinghua Wu, Zexiao Liu, Fei Zuo, Hua-Tay Lin, Chunfeng Hu, Salvatore Grasso
Summary: This study examines the impact of sintering thermal history on the kinetics of grain growth for alumina doped with magnesium oxide. The results show that a high heating rate during sintering inhibits the grain growth rate, while a slow heating rate increases the grain growth constant. The enrichment of magnesium at grain boundaries, favored by short sintering duration, is considered one of the factors contributing to the slowed grain growth rate. Moreover, it is suggested that rapid heating, along with limited grain coarsening driven by surface diffusion and a reduced migration rate of grain boundaries, facilitates the fabrication of translucent alumina without the need for a vacuum or hydrogen atmosphere.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Maximilian Staudacher, Anna Eggel, Peter Supancic, Tanja Lube
Summary: This article mainly introduces the importance of knowing the effective volume (Veff) or surface (Seff) under different loading scenarios when comparing the strength results of brittle materials from different testing methods or using the data for design purposes. The effective volume and surface of the B3B test are provided as tabulated data for various specimen geometries and materials, along with tools for data utilization. A fitting model for the dependency of Veff and Seff on the Weibull modulus is provided, and the influence of load-dependent non-linear effects on Veff and Seff is discussed. Finally, the necessity of Veff and Seff for statistical strength analysis is demonstrated through a practical example.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaolin Dang, Donglin Zhao, Xiaomeng Fan, Xiaokang Ma, Xiang Chen, Jimei Xue, Fang Ye, Yongsheng Liu
Summary: In this study, the coefficient of thermal expansion (CTE) of C/SiC material was reduced by replacing the carbon fiber reinforcement, leading to higher precision and stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weichao Wang, Liuying Wang, Gu Liu, Chaoqun Ge, Long Wang, Bin Wang, Jie Huang
Summary: Ti3SiC2/Al2O3-13%TiO2 coatings were prepared successfully by granulation and plasma spraying techniques. The coatings exhibited temperature-dependent permittivity and showed excellent microwave absorption and oxidation resistance properties at high temperatures.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Liang Zhou, Jianbao Hu, Yunhui Zhang, Min Tan, Chunjing Liao, Han Luo, Yanmei Kan, Xiangyu Zhang, Jinshan Yang, Xiaowu Chen, Shaoming Dong
Summary: The phase transition of thermally grown oxide (TGO) has been proven to be an important factor affecting the durability of EBCs. Yb2O3 and Yb2SiO5 can react with silica to form silicate, which can reduce the TGO thickness and extend the lifetime of EBCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Shuangyu Liu, Yingjie Chen, Ping Lu, Binhua Wang, Fulong Zhang, Juan Hong
Summary: This research paper systematically investigates the preparation and printing technology of silicon nitride ceramic slurry. By optimizing the surface modification of silicon nitride powder and the composition of the slurry, a Si3N4 ceramic slurry with excellent performance was successfully prepared, and photocuring molding technology was used to produce high-precision Si3N4 ceramic components. The study establishes the relationship between the refractive index and process variables and slurry properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingjun Xie, Xiao Li, Yuanming Lai, Cong Qi, Jun Yin, Weiping Gong, Yuanxun Li, Qian Liu, Chongsheng Wu
Summary: “In this study, high-entropy spinel-type ceramics were synthesized and their microwave dielectric properties were investigated. The high-entropy ceramics exhibited good dielectric performance, which was influenced by factors such as sintering temperature, lattice distortion, and grain size.”
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
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
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
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
Thomas Herisson de Beauvoir, Elise Benard, Geoffroy Chevallier, Claude Estournes
Summary: This study prepared yttria stabilized zirconia ceramics using Flash-SPS at different temperatures and analyzed the influence of sintering temperature on microstructure. The results showed that the maximum densification rate was achieved at 1600 degrees C and decreased with increasing sintering temperature. The presence of a thermal gradient in the samples also resulted in heterogeneity in grain size and morphology.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
