Article
Materials Science, Multidisciplinary
Yixiang Xu, Shansong Huang, Dijuan Han, Meiqi Dai, Xin Zhong, Yaran Niu, Xuebin Zheng
Summary: The ablation behavior of ZrB2-based composite coatings with different SiC/TaSi2 contents was evaluated in this study. The types and formation processes of oxidation products were analyzed, and their influence on the ablation resistance of the coatings was studied.
Article
Materials Science, Ceramics
Xiaochao Jin, Jingjing Yang, Yongle Sun, Pan Li, Cheng Hou, Yuxiang Zhao, Xueling Fan
Summary: In this study, ZrB2-SiC composite UHTCs parts were successfully joined using Ni foil as filler, forming the ZrB2-SiC/Ni/ZrB2-SiC (ZS/Ni/ZS) joint with good mechanical properties and oxidation resistance. The joint had a shear strength of approximately 161 MPa, demonstrating satisfactory performance. Additionally, the joint showed good oxidation resistance for a wide range of elevated temperatures (800-1600 degrees C), making it suitable for extreme environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
O. Grigoriev, I Neshpor, D. Vedel, T. Mosina, L. Silvestroni
Summary: The addition of chromium diboride was found to lower the sintering temperature and improve powder consolidation by forming low-melting phases. The combination with different components resulted in varied oxidation behaviors, affecting the oxidation resistance of the materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Chuncheng Wei, Zhongya Zhang, Xuefei Ma, Lanyong Liu, Yun Wu, Daoqian Li, Peng Wang, Xianghan Duan
Summary: Laminated ZrB2-SiC/Si3N4 ceramics with Si3N4 whiskers as interface layer exhibit improved toughness, ablation resistance and higher thermal conductivity compared to monolithic ZrB2-SiC ceramics.
Article
Materials Science, Ceramics
Jecee D. Jarman, William G. Fahrenholtz, Greg E. Hilmas, Jeremy L. Watts, Derek S. King
Summary: The mechanical properties of welded SiC-ZrB2 and SiC-ZrB2-ZrC ceramics were measured and compared. The toughness and strength of the parent materials decreased after welding. The strength of the parent materials was influenced by the size of SiC clusters, while the strength of the welds was controlled by the size of pores in the fusion zones.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Jingbao Zhang, Guangchun Xiao, Mingdong Yi, Zhaoqiang Chen, Jingjie Zhang, Hui Chen, Xizuo Shang, Chonghai Xu
Summary: By adding ZrB2/SiC ceramic granules, the fracture toughness of the ceramic tool material was significantly improved, leading to better performance at high temperatures.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Stefano Mungiguerra, Anselmo Cecere, Raffaele Savino, Federico Saraga, Frederic Monteverde, Diletta Sciti
Summary: The study revealed that the SiC content has an impact on the aero-thermal resistance capabilities of ZrB2-xSiC-5Y(2)O(3) ceramics in atmospheric re-entry environment, with higher SiC content leading to improved surface temperature stability. Additionally, the durability of borosilicate glass has an influence on the aero-thermal behavior.
Article
Materials Science, Coatings & Films
Yifan Wang, Yanbo Liu, Zhuang Ma, Shizhen Zhu, Ling Liu, Mingshao Xie, Ze Zhang, Ruiqiang Wang
Summary: In order to enhance the oxidation and ablative properties of C/C composites, a ZrB2-SiC-HfB2-TaSi2 coating was applied on their surface using atmospheric plasma spraying (APS). The study focused on the microstructure and phase structure analysis of the coating, as well as the difference between the spray powder before and after IPS treatment. The results showed that the IPS treated powder exhibited improved fluidity and densification. The coating demonstrated good ablative resistance, with TaSi2 effectively sealing the coating's pores to prevent oxygen penetration.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
O. N. Grigoriev, A. Stepanenko, V. B. Vinokurov, I. P. Neshpor, T. Mosina, L. Silvestroni
Summary: The stress-strain state of ZrB2-SiC ultra-high-temperature ceramics, produced using commercial powders with different impurity levels, was investigated by X-ray diffraction. The level of thermal stresses of the different phases was determined based on the analysis of ZrB2 and SiC diffraction lines shift. Ceramics with high viscous-brittle transition temperatures and internal stresses exhibited high strength.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Jecee D. Jarman, William G. Fahrenholtz, Greg E. Hilmas, Jeremy L. Watts, Tieshu Huang
Summary: In this study, molybdenum and a molybdenum alloy were fusion welded to ZrB2-based ceramics to investigate the impact of electrical and thermal properties on weldability. The results showed that the measured thermal and electrical properties had little effect on the weldability of metal-ceramic welds, while the differences in melting temperatures between metal and ceramic affected the weld penetration depth into ceramic coupons.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Mechanical
Nickolai Savchenko, Yury Mirovoy, Alexander Burlachenko, Irina Sevostyanova, Ales' Buyakov, Maxim Rudmin, Andrey Vorontsov, Svetlana Buyakova, Sergei Tarasov
Summary: High-speed continuous sliding experiments on ZrB2-20 vol% SiC ultra-high temperature ceramics revealed a complex multilayer structure that influenced oxidation and mass transfer processes in the material. Layers formed by borosilicate glass and other components inhibited the diffusion of elements like oxygen and iron into ceramic grains, while also leading to the formation of numerous spherical particles.
Article
Materials Science, Multidisciplinary
Litao Zhao, Cheng Hou, Xiaochao Jin, Pan Li, Zhiyong Wang, Xueling Fan
Summary: In this study, ZrB2-SiC ceramics with three different porosity were prepared by spark plasma sintering at different temperatures, and their oxidation behaviors were investigated. The results showed that the porosity of the ceramics had a significant effect on the oxidation behaviors, with lower porosity resulting in smaller oxide layer thickness and weight change, indicating stronger oxidation resistance.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Ceramics
Jecee D. Jarman, William G. Fahrenholtz, Greg E. Hilmas, Jeremy L. Watts, Derek S. King
Summary: Various SiC-ZrB2-ZrC ceramics were joined by fusion welding to determine the maximum silicon carbide content that could be joined. As compositions approached the ternary eutectic, the welds had smaller SiC grains and exhibited better weld ability. The ternary eutectic in the system was found at specific volume ratios of SiC, ZrB2, and ZrC, with a melting temperature of 2330 +/- 23 degrees C.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Jingbao Zhang, Hui Chen, Guangchun Xiao, Mingdong Yi, Zhaoqiang Chen, Jingjie Zhang, Xizuo Shang, Chonghai Xu
Summary: ZrB2/SiC/Si3N4 ceramic tool material prepared by spark plasma sintering technology shows excellent oxidation resistance with the formation of a dense oxide film on its surface, effectively preventing oxygen from entering the material.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Rui-qiang Wang, Nan Wang, Shi-zhen Zhu, Yan-bo Liu, Zhuang Ma
Summary: ZrB2-SiC (ZS) and ZrB2-SiC-TaSi2 (ZST) ultra-high temperature ceramics coatings were prepared on the surfaces of C/C composites to improve their high-temperature oxidation resistance. The ablation behaviors of the coatings were evaluated at different temperatures, and it was found that the ZS coatings had good resistance at 1800 °C but failed rapidly at 2000 °C, whereas the ZST coating always performed well even at 2000 °C. The enhancement of high temperature ablation resistance was attributed to the introduction of TaSi2, which improved the coating's density, reduced volatilization of the glassy phase, and enabled the formation of a dense oxide layer.
CERAMICS INTERNATIONAL
(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)