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.
Article
Materials Science, Multidisciplinary
Xiao Guo, Zeyu Peng, Pengbo Ding, Long Li, Xinyi Chen, Haoyun Wei, Zhen Tong, Liang Guo
Summary: Silicon carbide (SiC), as a leading representative of the third-generation of semiconductors, has excellent physical properties but poses challenges in processing, requiring special techniques such as femtosecond laser machining. SiC shows unprecedented potential for optoelectronic applications, necessitating measurement of its nonlinear optical properties and exploration of its potential applications.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Otto Cranwell Schaeper, Johannes E. Froch, Sejeong Kim, Zhao Mu, Milos Toth, Weibo Gao, Igor Aharonovich
Summary: This study demonstrates the fabrication of functional photonic devices based on 4H Silicon Carbide using a Faraday cage-based oblique angle etch method. The fabricated suspended microring resonators exhibit high-quality factors, showing potential for enhancing the properties of SiC in integrated on chip quantum photonics in the future.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
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
Materials Science, Ceramics
Giovanni Bianchi, Antonio Di Mauro, Luca Ferrari, Sandro Gianella, Alberto Ortona
Summary: This study investigates the production and oxidation behavior of SiC coated Si-SiC tetrakaidekahedron periodic structures at 1500 degrees C. C-SiC lattices were fabricated using 3D printing of polymer templates followed by replica technique and pyrolysis. Submicron SiC particles were successfully deposited onto the C-SiC structures through electrophoretic deposition (EPD) by optimizing voltage, frequency, and duty cycle. Different coating thicknesses were achieved by varying the deposition time. The coated samples were then infiltrated with molten silicon, oxidized at 1500 degrees C, and characterized.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Xiaoyang Ji, Zhe Cheng, Ella K. Pek, David G. Cahill
Summary: In this study, the thermal conductance of the oxide layer and the thermal conductivity of SiC/SiC composites were mapped with high spatial resolution using time-domain thermoreflectance (TDTR). It was found that the dominant source of noise in the measurements was the input noise of the preamplifier under low laser powers or small integration time constants. The thermal conductance of the oxide on the fiber region was lower than that on the matrix due to slight differences in thickness and thermal conductivity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Anderson K. Okazaki, Rafael Furlan de Oliveira, Rafael Luiz Heleno Freire, Adalberto Fazzio, Felipe Crasto de Lima
Summary: Researchers have successfully grown two-dimensional arsenic allotropes on an insulating SiC substrate using molecular beam epitaxy. The arsenene has a flat structure and follows the periodicity of the SiC surface. Ab initio simulations based on density functional theory confirm the experimental observations. The strained structure exhibits a new triangular arsenene allotrope rather than the previously predicted honeycomb structure. This strained structure undergoes a Peierls-like transition, resulting in an indirect band gap semiconductor behavior.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Shengtao Zhang, Guofeng Fan, Tie Li, Lili Zhao
Summary: By modeling and optimizing the physical fields in the SiC crystal growth process with the numerical simulation software Virtual Reactor, high-quality and large-sized SiC crystals were successfully prepared. This is of great importance for the application of SiC in the new energy industry.
Article
Materials Science, Multidisciplinary
A. V. Zavorin, V. L. Kuznetsov, S. I. Moseenkov, A. G. Selyutin, A. V. Ishchenko, Tsog-Ochir Tsendsuren
Summary: Ex situ methods (TEM, XRD, and Raman spectroscopy) were used to study the changes occurring at the MWCNT/Si interfaces during heat treatment. SiC particles were formed starting from 900 degrees C, and further temperature increase led to the formation of polycrystalline SiC particles and significant shortening of MWCNTs. The size of the formed SiC crystallites could be controlled by varying the time and temperature of heat treatment. The activation energy for SiC formation was estimated to be 470 kJ/mol. The influence of heat treatment on the electrical conductivity and porosity of MWCNT-Si composites in the pressure range of 25-175 MPa was also investigated.
DIAMOND AND RELATED MATERIALS
(2023)
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
Yashpal Gupta, B. Venkata Manoj Kumar
Summary: This study investigates the friction and wear of spark plasma sintered ZrB2-SiC composites in dry unlubricated conditions against different counterbodies. It is found that composites with higher SiC content exhibit lower friction and wear, and the thermal conductivity of the counterbody influences the friction and wear of the composites.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Multidisciplinary
C. M. Polley, H. Fedderwitz, T. Balasubramanian, A. A. Zakharov, R. Yakimova, O. Backe, J. Ekman, S. P. Dash, S. Kubatkin, S. Lara-Avila
Summary: This article reports the synthesis of two-dimensional SiC and its stability on transition metal carbides. It was found that 2D-SiC is stable at high temperatures and interacts with the surface of transition metal carbides to produce a Dirac-like feature in the electronic band structure. This finding is significant for the synthesis and application of 2D-SiC.
PHYSICAL REVIEW LETTERS
(2023)
Article
Engineering, Chemical
M. Trevisan, R. Ghidossi, P. Moulin
Summary: SiC membranes show satisfactory hydraulic and retention performances in winemaking process. They can produce clear and brilliant wines, retain wine microorganisms, achieve higher production flows compared to hollow fibers, while still preserving the interesting compounds of wines, and filter matrices that cannot be processed by hollow fibers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Abolhassan Najafi, F. Golestani-Fard, H. R. Rezaie, Saviz Parsa Saeb
Summary: SiC-B4C nano powders were synthesized through sol-gel process in water-solvent-catalyst-dispersant system. The formation mechanism of the product during sol-gel process was evaluated using TEM, SEM, DTA/TG, BET, XRD, FTIR and DLS analysis methods. The nanoparticles had a high surface area and meso porous surfaces, with SiC-B4C particles in the range of 20-40 nm.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Mina Rasoolzadeh, Zahra Sherafat, Mehran Vahedi, Elham Bagherzadeh
Summary: The present research investigates the effect of SiC additive and process parameters on the beta phase formation in electrospun PVDF fibers. It is found that the presence of SiC nanoparticles enhances the piezoelectric behavior of PVDF/SiC nanocomposites, and the optimum sample shows improved piezoelectric sensitivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)