Article
Materials Science, Ceramics
Chen Hu, Joseph F. F. Labuz, Takaaki Koyanagi, Jia-Liang Le
Summary: Silicon carbide (SiC) fiber-reinforced SiC matrix (SiC/SiC) composites are being considered as potential materials for fuel claddings in light water reactors. This study presents a probabilistic model for the lifetime distribution of SiC/SiC composites, anchored by a multiaxial stress-based failure criterion and subcritical damage accumulation mechanism. The analysis demonstrates the importance of understanding the static fatigue behavior and length effect on the failure probability of the cladding.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Xiang Tian, Wei Sheng, Zhanshe Guo, Weiwei Xing, Runze Tang
Summary: A comb-type capacitive accelerometer based on silicon carbide microstructure was investigated in this study, showing superior performance compared to conventional silicon-based sensors. It has the advantages of low weight, small volume, and low cross-coupling, with a higher natural frequency than silicon(111) accelerometers. The accelerometer's resistive force consists of viscous damping and elastic damping components, with viscous damping dominating at low frequency and elastic damping dominating at high frequency.
Article
Materials Science, Ceramics
Tao Li, Yulei Zhang, Jian Zhang, Yanqin Fu, Jie Li
Summary: A SiO2-SiC reticulated layer with SiC nanowires was pre-prepared on C/C composites to improve oxidation resistance and alleviate siliconization erosion during SiC coating preparation, resulting in a compact and homogeneous SiC coating.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Rong Xue, Pan Liu, Zhejian Zhang, Nanlong Zhang, Yonghui Zhang, Jiping Wang
Summary: The introduction of PyC-SiCw into RBSC ceramics improved toughness and reliability. By systematically investigating the microstructures and properties of PyC-SiCw/RBSC composites, it was found that the addition of nano carbon black and PyC-SiCw had a significant impact. The PyC coating on SiCw protected the whiskers and provided a suitable whisker-matrix interface, contributing to the enhancement of bending strength and toughness in the composites.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study found that doping significantly affects the properties of porous SiC ceramics, with electrical resistivity strongly influenced by doping while thermal and mechanical properties primarily dependent on the necking area between grains. Results show that the electrical conductivity of porous SiC ceramics can be successfully tuned independently of the thermal conductivity through suitable doping.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Kazuki Uchiyama, Takashi Yamamoto, Yasuaki Einaga
Summary: Silicon carbide (SiC) has excellent properties but lacks sufficient electrical conductivity for electrochemical applications, leading to the exploration of boron-doped SiC (SiC:B). The electrochemical properties of SiC:B were evaluated and found to have reactivity and sensitivity comparable to that of glassy carbon electrodes.
Article
Materials Science, Ceramics
Fei Yang, Weipeng Wang, Dong Wang, Fei Zhu, Shuming Peng, Zhengjun Zhang
Summary: This study systematically investigated the evolutionary correlation between defects and properties in 6H-SiC, identifying point defect accumulation, defect cluster growth, Young's modulus reduction, and optical absorption enhancement. The relaxation process during crystalline-amorphous transition was believed to induce the final reduction stage of Young's modulus, highlighting the importance of average lattice disorder in property assessment. This research paves the way for assessing high temperature radiation effects where multiple defect types coexist.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Man Xu, Yarabahally R. Girish, Kadalipura P. Rakesh, Piye Wu, Honnayakanahalli M. Manukumar, Shayan M. Byrappa, Udayabhanu, Kullaiah Byrappa
Summary: Silicon carbide is considered a notable semiconductor due to its outstanding characteristics, widely used in solid-state lighting and power electronics. However, research on its biocompatibility and other applications is limited. This review discusses the physicochemical properties of SiC, its applications as new generation functional materials and ceramic matrix composites, and provides an overview of multidisciplinary applications of SiC nanostructures, highlighting future research directions.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The study investigated the effects of BN content in porous SiC ceramics on their electrical, thermal, and mechanical properties in N2 and Ar atmospheres. It was found that the electrical resistivity was mainly controlled by the sintering atmosphere, while the thermal conductivity and flexural strength were more influenced by porosity and necking area changes between SiC grains.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Yanxin Zhai, Haiwang Li, Zhi Tao, Xiaoda Cao, Chunhui Yang, Zhizhao Che, Tiantong Xu
Summary: In this study, a MEMS accelerometer based on bulk SiC processing technology is designed and fabricated to solve the problem of applying accelerometers in extremely high temperature environments. The experiments show that the final sensor has high sensitivity and can accurately test low/medium g-value acceleration signals.
MICROELECTRONIC ENGINEERING
(2022)
Article
Materials Science, Ceramics
Haichao Xu, Yong Liu, Yuju Che, Zhonghua Chen
Summary: Silicon carbide ceramic matrix composites are widely used in aerospace field for their high temperature resistance, high strength, and corrosion resistance. However, traditional machining methods limit their application in complex shape structure preparation. This study proposes a new strategy combining direct ink writing with reaction bonding to prepare SiCw/SiC complex structures. A water-based slurry consisting of silicon carbide, carbon powder, and silicon carbide whisker was developed. The influence of C and SiCw content in the slurry on the sintering properties of direct-written samples was studied. The results show that the 3D printed SiCw/Si-C composites have great application prospects in the aerospace field.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Pablo Guzman, Toan Dinh, Afzaal Qamar, Jaesung Lee, X. Q. Zheng, Philip Feng, Mina Rais-Zadeh, Hoang-Phuong Phan, Thanh Nguyen, Abu Riduan Md Foisal, Huaizhong Li, Nam-Trung Nguyen, Dzung Viet Dao
Summary: This paper introduces a new concept of bi-layered monolithic silicon carbide resonators that utilize thermal-piezoresistive pumping to boost the quality factor. The device operates through electrothermal actuation and the structural stress modulates the electrothermal force via the piezoresistive effect. The unique design of the double SiC layer allows energy to be pumped into the system, resulting in an enhancement of the effective quality factor.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Multidisciplinary
Guanglei Zhong, Xuejian Xie, Desheng Wang, Xinglong Wang, Li Sun, Xianglong Yang, Yan Peng, Xiufang Chen, Xiaobo Hu, Xiangang Xu
Summary: A novel Al doping method using p-type SiC powder was proposed for the growth of p-type SiC crystals. The continuity and utilization rate of Al element were greatly improved by using p-type SiC powder, leading to a significant reduction in resistivity and improvement in resistivity uniformity of the crystals.
Review
Chemistry, Analytical
Francesco La Via, Daniel Alquier, Filippo Giannazzo, Tsunenobu Kimoto, Philip Neudeck, Haiyan Ou, Alberto Roncaglia, Stephen E. E. Saddow, Salvatore Tudisco
Summary: In recent years, SiC has seen new applications proposed in various fields. This review discusses the development status, main challenges, and future prospects of several emerging SiC applications. The paper extensively reviews the use of SiC in high temperature space applications, high temperature CMOS, high radiation hard detectors, new optical devices, high frequency MEMS, devices with integrated 2D materials, and biosensors. The development of these applications, particularly in the 4H-SiC ones, has been facilitated by advancements in SiC technology and improvements in material quality and price. However, further development in these fields requires the development of new processes and improvement in material properties. In the case of 3C-SiC applications, despite the performance of the devices and their potential market, the lack of material and specific processes development, as well as the limited availability of SiC foundries, hamper further progress.
Article
Engineering, Electrical & Electronic
Anna Persano, Alvise Bagolini, Jacopo Iannacci, David Novel, Adriana Campa, Fabio Quaranta
Summary: This work proposes a low-temperature fabrication process of thin-film encapsulation (TFE) for packaging of large-size MEMS. A finite element method (FEM) model is developed to evaluate the shape of TFE and provide guidelines for the fabrication process. The use of a silicon nitride/chromium cap layer allows for the successful creation of cap holes on high-topography substrates.
IEEE SENSORS JOURNAL
(2023)