Article
Materials Science, Ceramics
Xin Long, Zhenyu Wu, Changwei Shao, Xiaozhou Wang, Yingde Wang
Summary: SiBN fibers are microwave-transparent reinforced materials used in high Mach number aircrafts. This study investigated the high-temperature oxidation behavior of SiBN fibers with different boron contents from 1000 to 1400 degrees C in air. The oxidation process involves the transformation of Si3N4 and BN phases into SiO2 and B2O3, with the formation of a SiO2/BN layer and hexagonal boron nitride nanoparticles in the fiber interior.
JOURNAL OF ADVANCED CERAMICS
(2021)
Article
Materials Science, Ceramics
Lin Zhao, Xueying Wang, Seahoon Lee, Emanuel Ionescu, Ralf Riedel
Summary: Nano size ZrC powder was prepared using liquid polymeric precursor method, controlling the carbon content and viscosity. ZrC powders were fabricated by pyrolysis and carbothermal reduction in argon and vacuum, with analysis of microstructure and pyrolysis mechanism. The synthesized X-ray pure ZrC powders had an average grain size less than 30 nm.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Guang Zeng, Ping Xu, Chen Zeng, Cunqian Fang, Yafeng Wang, Xin Yang, Mingyu Zhang, Zhean Su, Qizhong Huang
Summary: A novel single-source precursor was synthesized to prepare HfCxN1-x/SiC multiphase ceramics. The results showed that the ceramics had a homogeneous microstructure and phase evolution, which effectively prevented grain growth and improved oxidation resistance. Due to the absence of oxygen, high ceramic yield, homogeneous composition, and excellent oxidation resistance, the prepared precursor is a promising material for making high-performance composite ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yuan Tian, Xin Long, Changwei Shao, Yingde Wang
Summary: High-temperature oxidation resistance is crucial for Si-C-B-N ceramic fibers in reinforcing ceramic matrix composites. However, there have been limited studies on the high-temperature oxidation behavior of Si-C-B-N fibers, hindering their further applications. This study examined the high-temperature oxidation process of Si-C-B-N ceramic fibers in air at temperatures ranging from 1000 to 1500 degrees Celsius. The findings provide valuable insights for the practical use of Si-C-B-N fibers in harsh environments.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Rongqian Yao, Yinong Zheng, Chao Jin, Wenyan Huang, Yuchen Han, Ke Li, Siqi Lan, Zhenguo Huang, Jiahao Hu, Yinggan Zhang
Summary: The unique properties of MoSi2 open up new opportunities for preparing bulk polymer-derived ceramics with favorable structural-functional capabilities. By utilizing a production route involving re-pyrolysis of ball-milling-induced SiC fillers and flexible precursors blends, in situ formed SiC(rGO, xMoSi(2)) bulk PDCs with optimized properties can be obtained. Notably, these materials exhibit enhanced hardness, fracture toughness, and thermal conductivity, making them promising for emerging uses in the aerospace field.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Coatings & Films
Pei Zhang, Qiangang Fu, Bing Liu, Chunyu Cheng, Wei Xie, Weiyan Wang, Dou Hu, Jiaping Zhang
Summary: SiC-ZrC-based composite coatings on carbon/carbon composites were prepared by pyrolysis of ZrC polymer precursor and gaseous reactive infiltration. The use of ZrSi2 for infiltration increased the UHTC content in the coatings and enhanced their ablation resistance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Jingyu Li, Qian Wang, Ke Gai, Bangjun Lu, Yuhuan Wu, Kun Zheng, Bo Guan, Weijian Han, Li Ye, Fenghua Chen, Tong Zhao
Summary: Zirconia-alumina multiphase ceramic fibers with 80 wt% and 10 wt% zirconia content were prepared via melt-spinning and calcination methods. The fibers exhibited high tensile strength and thermal stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Manufacturing
Zi-long Wang, Kun Zheng, Jing-yun Xiong, Li-jiao Xun, Yue Han, Ying Guo, Li Ye, Wei-jian Han, Jun Wang, Wen-bin Liu, Heng Zhou, Tong Zhao
Summary: Organic-inorganic phthalonitrile hybrids with enhanced heat resistance and thermal stability were successfully achieved using ceramic precursors. The continuous inorganic phases derived from the ceramic precursors contributed to the improved heat resistance and thermal conductivity of the hybrids.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Yiang Du, Bing Wang, Wei Li, Quzhi Song, Changwei Shao, Cheng Han, Yingde Wang
Summary: A novel polymer precursor PPMAB was designed and synthesized with high ceramic yield and concentrated molecular weight distribution, showing excellent and stable spinnability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Xiangling Tian, Zhijun Ma, Jianrong Qiu, Rongfei Wei
Summary: Optical fibers were formed by replacing the glass core with a ceramic core. Nd3+ doped LaNbO4 nanocrystals were precipitated in the core after heat treatment. This fiber has promising optical properties and potential for use in NIR fiber amplifiers.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Ruru Guo, Zhijian Li, Lu Li, Yu Liu, Ruixiao Zheng, Chaoli Ma
Summary: The "Translation" section describes the synthesis of a nano dual-phase powder and the preparation of high-entropy ceramic using molten-salt assisted borothermal reductions. The oxidation behavior of the ceramic and the formation of a layered structure are also investigated, and a possible mechanism is proposed.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Pradhyun Veerapanaicker Soundaraj, Santhosh Sivan Sembulingam, Ganesh Babu Thiyagarajan, Niraja Moharana, K. C. Hari Kumar, Ravi Kumar
Summary: The ablation behavior of SiOC ceramic foams derived from poly(hydridomethylsiloxane) was evaluated under oxy-acetylene flame at 1500 degrees C. Results showed that closed porous structured SiOC ceramic foams exhibited lower mass ablation rate compared to open porous structured ones, making them a potential thermal protection material for high temperature applications. Feasibility of foam reduction reactions was further investigated through computational analysis, highlighting the importance of tailored microporous structured SiOC ceramic foams.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Yuxi Yu, Yujuan Huang, Lu Li, Liuying Huang, Sa Zhang
Summary: In this study, silica ceramic nanofiber (SCNF) membranes with ultra-softness were fabricated using electrospinning and precursor derived ceramic technology. The effects of different PVA dosages and heat treatment temperatures on the fiber morphology, mechanical properties, and thermal conductivity of the membranes were investigated. The results showed that the SCNF membrane made with 5% PVA and heat treated at 900 degrees C had the best overall performance, with smooth and uniform fiber morphology, excellent mechanical properties, and low thermal conductivity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Wanying Zhang, Shibin Wu, Keru Song, Guangdong Zhao, Dongyu Zhao
Summary: SiZrBOC ceramics prepared by sol-gel method exhibit excellent high-temperature resistance and oxidation resistance, with the addition of boron elements promoting the formation of Si-O-B bonds in the ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Rahul Anand, Bibhuti B. Nayak, Shantanu K. Behera
Summary: This study focuses on the structural changes of polyvinylsilazane precursor upon modification by a molecular precursor of zirconium, and the processing of high temperature stable nanostructured SiCN and SiZrCNO ceramics. Zr doping improves the high temperature stability and oxidation resistance of SiCN ceramics, with the formation of t-ZrO2 nanocrystals at higher temperatures providing significant advantages for ceramic nanocomposites.
JOURNAL OF MATERIALS SCIENCE
(2022)
