Article
Materials Science, Ceramics
Victor Zamora, Cristina Ojalvo, Fernando Guiberteau, Oscar Borrero-Lopez, Angel L. Ortiz
Summary: Through transient liquid-phase-assisted spark-plasma sintering at lower temperature and higher MoSi2 content, superhard B4C-SiC-MoB2 triplex-particulate composites with a hardness of around 33 GPa were successfully fabricated, demonstrating excellent wear resistance properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Mechanical
Sandan Kumar Sharma, Luv Gurnani, Manoj K. Jangid, K. V. Mani Krishna, Amartya Mukhopadhyay, Young-Wook Kim, B. Venkata Manoj Kumar
Summary: Dual-beam FIB/FEG-SEM and TEM/HRTEM observations provide important insights into the micro-mechanisms of material removal and the role of WC in SiC and SiC-50 wt% WC composite disks worn against SiC ball.
Article
Materials Science, Multidisciplinary
Dang-Hyok Yoon, Pinar Colkesen, Gizem Kaplan
Summary: This study investigated the use of alkaline earth (AE) nitrates as sintering additives for silicon carbide (SiC) in nuclear applications. The AE nitrates were found to transform into oxides during sintering without decomposing SiC, as predicted by thermodynamic simulations. Pure AE systems were ineffective, while a novel AE-rare earth (RE) system significantly increased the density of SiC, making it a potential replacement for conventional Al-based additives.
Article
Crystallography
Dauren Zhambakin, Almira Zhilkashinova, Madi Abilev, Leszek Latka, Alexandr Pavlov, Bauyrzhan Tuyakbaev, Assel Zhilkashinova
Summary: This article investigates the spark plasma sintering of ceramics based on silicon carbide with nanoadditives. The results show that the SPS method can produce materials with higher density, increased mechanical strength, and microhardness compared to liquid-phase sintering.
Article
Materials Science, Ceramics
Victor Zamora, Francisco J. Martinez-Vazquez, Fernando Guiberteau, Angel L. Ortiz
Summary: Two B4C-SiC composites with different SiC content were successfully prepared by spark-plasma sintering. The composite with 20%Si exhibited a hardness of 28.7 GPa, while the one with 4.28%Si showed an ultrahigh hardness of 35.1 GPa. Both composites demonstrated superior wear resistance compared to the reference B4C monoliths.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Florimond Delobel, Julien Cambedouzou, Florence Moitrier, Sebastien Lemonnier
Summary: The study showed that the addition of low sintering aids content can improve the density of sintered β-SiC pellets close to theoretical density. The use of high sintering pressure helps maintain a fine microstructure and pristine cubic crystalline structure while preventing the formation of secondary phases.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Chemical
Fanglong Yin, Yang Wang, Hui Ji, Zhonghai Ma, Songlin Nie
Summary: Cermets are widely used in industry due to their high strength, hardness, and good wear resistance. This study investigated the tribological properties of various cermets sliding over silicon carbide in prepared seawater, showing that tribological properties were enhanced with increasing sliding speed. YN6X performed well in seawater due to its high hardness and presence of Ni, while YG6X showed better wear resistance in tap water.
Article
Chemistry, Physical
Thomas Richardson, Rajani K. Vijayaraghavan, Patrick J. McNally, M. Veronica Sofianos
Summary: This study investigates the addition of SiC and PS spheres to calcium carbonate (CaCO3) to enhance its cycling stability and improve its suitability as an energy storage system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hanna Tsybenko, Chunhua Tian, Julia Rau, Benjamin Breitbach, Paul Schreiber, Christian Greiner, Gerhard Dehm, Steffen Brinckmann
Summary: In this study, the deformation behavior and chemical evolution of cementite under high pressure sliding wear were investigated. Multiple deformation mechanisms were observed beneath the contact surface, and the ductility of cementite was found to be enhanced. Additionally, the formation of Hagg carbide was observed during the wear process.
Article
Materials Science, Ceramics
Shuang Li, Yang Li, Chuncheng Wei, Peng Wang, Peiling Gao, Lijuan Zhou, Guangwu Wen
Summary: The fabrication route for silicon carbide membrane using boron carbide assistance in co-sintering process results in a reduction of sintering cycles and shorter preparation periods, as well as the formation of a straight and homogeneous selective layer on the substrate.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Chemical
Abbas Sabahi Namini, Seyed Ali Delbari, Nilgun Baydogan, Mohammad Vajdi, Farhad Sadegh Moghanlou, Mehdi Shahedi Asl
Summary: This research evaluated the impact of five nitride additives on TiC-based materials, showing that AlN enhanced relative density while Si3N4 had the most detrimental influence. Besides BN contributing to the finest microstructure, AlN had the greatest effect on thermal conductivity.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Bernadette Schlueter, Christian Schroeder, Wenli Zhang, Rolf Muelhaupt, Ulrich Degenhardt, Richard Sedlak, Jan Dusza, Katalin Balazsi, Csaba Balazsi, Andreas Kailer
Summary: This study focused on utilizing two different types of graphene materials to enhance the mechanical and tribological properties of silicon carbide/graphene nanocomposites. Through the use of thermally reduced graphite oxide and graphene made of organic precursors, the composites exhibited promising tribological performance under underwater lubrication conditions.
Article
Materials Science, Ceramics
Zeynep Ayguzer Yasar, Richard A. Haber
Summary: Fully dense boron carbide-silicon carbide composites were successfully produced by spark plasma sintering method, wet mixing method provided better uniformity and consistency in material properties.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Multidisciplinary
Byeongyun Jeong, Simanta Lahkar, Qi An, Kolan Madhav Reddy
Summary: Lightweight polycrystalline ceramics have promising physical, chemical, and mechanical properties. However, their coarse-grained structures make them brittle and low in fracture toughness. It has been discovered that nanocrystalline ceramics with soft interface phases or disordered structures can significantly enhance their mechanical properties.
Article
Chemistry, Physical
Wei Zhang
Summary: Boron carbide-silicon carbide ceramic is a high-performance tribological structural material with in situ formed relief structure, which improves its tribological properties and shows promising potential for various applications.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Rohit Malik, Eui-Hyoun Ryu, Young-Wook Kim
Summary: This study successfully achieved the joining of liquid phase sintered SiC ceramics using magnesia-alumina-silica (MAS) glass-ceramic fillers without applied pressure. The research found that the filler composition and joining temperature significantly affected the joint strength, with the joint strength being inversely proportional to the interlayer thickness.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Review
Materials Science, Ceramics
Taraknath Maity, Young-Wook Kim
Summary: The study highlights the importance of minimizing additive content, carefully selecting additive composition, and using additive compositions without Al compounds for achieving high flexural strength and excellent RT strength retention at temperatures equal to or above 1500 degrees C in high-temperature ceramic SiC.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Rohit Malik, Young-Wook Kim
Summary: This study demonstrates that the use of alpha-SiC starting powders can achieve low electrical resistivity and high thermal conductivity in PSS SiC ceramics, attributed to their higher sinterability, lower impurity content, and lower phase transformation rate compared to beta-SiC powders.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Review
Materials Science, Ceramics
Muhammad Shoaib Anwar, Syed Zaighum Abbas Bukhari, Jang-Hoon Ha, Jongman Lee, In-Hyuck Song, Young-Wook Kim
Summary: Porous silicon carbide-based ceramics have significant importance in various technical applications due to their exceptional structural and functional properties. The electrical resistivity of porous SiC is influenced by factors such as chemical composition, processing conditions, and microstructure. This article reviews the impact of critical factors and discusses novel applications of porous SiC with controlled electrical resistivity.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Maria Dolores Sosa Lucio, Shynar Kultayeva, Young-Wook Kim, In-Hyuck Song
Summary: The addition of 33 wt% SiC whisker into the nano-SiC powder-carbon black template mixture increased the flexural strength, thermal conductivity, and specific flow rate of porous silica-bonded SiC ceramics by 35%, 133%, and 266% respectively. This enhancement was primarily attributed to the reinforcement effect and easy heat conduction path provided by the SiC whiskers.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Sandan Kumar Sharma, Luv Gurnani, Manoj K. Jangid, K. V. Mani Krishna, Amartya Mukhopadhyay, Young-Wook Kim, B. Venkata Manoj Kumar
Summary: Dual-beam FIB/FEG-SEM and TEM/HRTEM observations provide important insights into the micro-mechanisms of material removal and the role of WC in SiC and SiC-50 wt% WC composite disks worn against SiC ball.
Article
Materials Science, Ceramics
Shynar Kultayeva, Young-Wook Kim
Summary: This study investigated the effects of boron carbide (B4C) content and sintering atmosphere on the properties of porous silicon carbide (SiC) ceramics. It was found that the electrical resistivity was lower in the nitrogen-sintered samples, while the thermal conductivity and flexural strength were higher in the argon-sintered samples. The properties were also influenced by the B4C content.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Gyoung-Deuk Kim, Young-Wook Kim, Seok-Min Yong, Wook Ki Jung
Summary: A strategy of incorporating B4C to improve the specific stiffness of SiC ceramics was developed. The incorporation of B4C effectively increased the specific stiffness of SiC ceramics as B4C has a lower mass density and higher Young's modulus. B4C also served as an effective additive for sintering SiC ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Jeong-Ah Yeom, Young-Wook Kim
Summary: The electrical, thermal, and mechanical properties of porous SiC ceramics can be controlled by adjusting the C content and sintering temperature. Within a certain range, increasing C content and sintering temperature can decrease the electrical resistivity and increase the thermal conductivity and flexural strength. The porosity of porous SiC ceramics can be independent of the thermal conductivity and flexural strength by controlling C content and sintering temperature.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Jeong-Ah Yeom, Eun Seo Kang, Young-Wook Kim, Woo Hyun Nam
Summary: The intrinsic microstructure and crystalline phases of porous SiC ceramics with 5 vol% AlN-RE2O3 (RE = Sc, Y, Lu) additives were characterized. The flexural strength and thermal conductivity of the ceramics were successfully tuned using different additive compositions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Maria Dolores Sosa Lucio, Shynar Kultayeva, Young-Wook Kim
Summary: In this study, a new strategy of applying a double-layer coating was established to improve both the mechanical strengths and thermal resistances of porous SiC ceramics. The double-layer coating led to a unique gradient pore structure, resulting in increased flexural strengths and decreased thermal conductivities of the ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Hyoung-Jun Kim, Eun Seo Kang, Young-Wook Kim, Kwang-Young Lim, Seoung-Jae Lee
Summary: The effects of the starting SiC powder (alpha or beta) with the addition of 5.67 wt% AlN-Y2O3-CeO2-MgO additives on the residual porosity and thermal conductivity of fully ceramic microencapsulated (FCM) fuels were investigated. The study found that FCM fuels prepared using alpha-SiC powder had lower porosity and higher thermal conductivity, suggesting it as a promising method for optimizing FCM fuel preparation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Frantisek Simko, Zoltan Lences, Young-Wook Kim, Martin Nosko, Martin Kontrik, Michal Korenko
Summary: Electrically conductive nitrogen-doped SiC ceramics were exposed to molten FLiNaK at different temperatures and durations in an Ar atmosphere. The SEM-EDX investigations revealed that the corrosion attack primarily occurred at the intergranular phase and partially dissolved the SiC grains. It was demonstrated that N-doped SiC exhibited good corrosion resistance against molten FLiNaK, with varying thicknesses of the corroded layer observed after different durations of corrosion.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Jeong-Ah Yeom, Young-Wook Kim, Wook Ki Jung, Dong-Ik Cheong, Eul Son Kang
Summary: This study investigated the effects of B4C content on the specific stiffness, mechanical properties, and thermal properties of pressureless-sintered SiC ceramics. SiC ceramics with 2.5 wt% C and 0.7-20 wt% B4C as sintering aids were successfully sintered to over 99.4% of theoretical density at 2150 degrees C in Ar. The specific stiffness of SiC ceramics increased from 136.1 x 106 to 144.4 x 106 m2 & BULL;s- 2 as the B4C content increased from 0.7 to 20 wt%.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Dulal Das, Maria Dolores Sosa Lucio, Shynar Kultayeva, Young-Wook Kim
Summary: The effects of pore size on the electrical and thermal properties of porous SiC ceramics were investigated. It was found that increasing the pore size resulted in higher electrical and thermal conductivities. This can be attributed to the smaller pore/strut interface area in ceramics with larger pore size, reducing the scattering effects and enhancing the conductivities.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)