Article
Materials Science, Ceramics
Yan Xiong, Junwei Li, Fansi Luo
Summary: The abnormal grain growth (AGG) behavior was observed during the solid-state sintering of nano-sized BaTiO3 powder. The results challenged traditional sintering theories and proposed an explanation based on the oriented attachment of smaller grains.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Brayan Paredes-Goyes, David Jauffres, Jean-Michel Missiaen, Christophe L. Martin
Summary: This translated text discusses a coupled solid-state sintering and grain growth model and its application in the study of large packings of particles within the DEM framework. Results show that even at an early stage of sintering, hardly detectable grain growth significantly affects sintering kinetics.
Article
Materials Science, Ceramics
Chaofei Liu, Xinran Li, Xiaokai Liu, Zhongheng Zuo, Benshuang Sun, Yongchun Shu, Yang Liu, Xueyun Zeng, Jianhong Yi, Jilin He
Summary: This study synthesized Zn-doped In2O3 composite nanoparticles and investigated the effects of In:Zn atomic ratio and pH on the morphology and phase composition of the nanoparticles. The results showed that nanoparticles prepared under different conditions exhibited different morphologies and crystal phases.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Weiyou Chen, Zengbin Yin, Xuelin Li, Juntang Yuan
Summary: Microwave sintering is an efficient method for preparing WC-10Co cemented carbide tool materials. Co-doped additives of metal carbides and rare earth oxide were found to significantly enhance the mechanical properties of the microwave-sintered cemented carbide. The WC-10Co-0.3Cr(3)C(2)-0.3VC-0.3Mo(2)C sintered at 1400 degrees C with a holding time of 10 min exhibited the best mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
G. Singh, S. Mohod, P. V. S. Varma, P. Purohit, D. B. Sathe, R. B. Bhatt
Summary: For the first time, direct microwave sintering of natural uranium dioxide (UO2) pellets at bulk scale has been successfully demonstrated. The process involves sintering at 1700 degrees C for 6 hours using 2.45 GHz microwave radiation in a reducing atmosphere. This method produces defect-free pellets with smaller grain size compared to conventionally sintered pellets.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Raman Mnatsakanyan, Artur Aghoyan, Davit Davtyan
Summary: Boron monoposphide (BP) has unique physical and chemical characteristics, making it suitable for various practical applications. However, the difficult synthesis of the single phase of boron monophosphide limits its usage. Additionally, existing methods for synthesizing nanoscale BP often require high temperatures and long synthesis durations. This paper presents a simple, energy-efficient, and straightforward microwave activation synthesis method, which successfully produces pure single-phase BP nanopowder with a narrow size distribution (70-90 nm) in a short synthesis time (10 min).
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hasnat Jahan Sumona, Md. Shafayet Sultan, Shamima Akter Urmi, Md. Abdul Gafur
Summary: In this study, lanthanum and zirconium doped barium titanate ceramics were fabricated by solid-state sintering. The structural, dielectric, and optical properties were investigated. The results showed that lanthanum hindered grain growth while zirconium increased density and enhanced the dielectric constant. Additionally, the optical band gap decreased with increasing Zr4+ content.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jongbeom Lee, Jinyoung Jeong, Haguk Jeong
Summary: The annealing temperature has an effect on the particle sizes and pore volume of hydrothermally synthesized BaTiO3 nanopowders. The grain growth of sintered BaTiO3 samples is dependent on the initial particle size and pore volume, following the Arrhenius equation. The activation energy for grain growth is independent of initial particle size within the range of 100-300 nm.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Chemistry, Multidisciplinary
C. Ji, T. Fan, G. Chen, X. Bai, J. Wang, J. He, W. Cai, R. Gao, X. Deng, Z. Wang, X. Lei, C. Fu
Summary: The study showed that microwave sintering method can effectively decrease the grain size and enhance the compactness of BFO-BTO ceramics, while the introduction of BTO can strengthen its dielectric relaxation behavior.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Kai Hu, Jun Yi, Bo Huang, Xilei Bian, Gang Wang
Summary: This study overcomes the trade-off between strength and ductility in pure nickel materials by using grain boundary relaxation and optimizing grain size. The results show that grain boundary relaxation can improve both tensile strength and uniform elongation of nickel, and enhance the plastic deformation through controlling dislocation activities.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Multidisciplinary
Yang Zuo, Cong Zhao, Ana Robador, Martin Wickham, Samjid H. Mannan
Summary: This study investigates the mechanisms of grain growth and twin formation in the bulk sintered Cu nanoparticle structure using a quasi-in-situ method. It is found that the grains continuously grow and become oriented during elevated temperature, and porosity has a greater impact on joint strength than grain or pore size. The high porosity interface between the sintered structure and the Cu substrate is eliminated due to subsequent grain boundary movement. This study provides the first detailed experimental observation of nanoscale grain growth, twin formation, and grain boundary movement in the sintered Cu structure, offering new guidance for strengthening Cu interconnections in power electronics.
Article
Chemistry, Physical
Grazia Accardo, Ander Orue, Dimitrios Chatzogiannakis, Pawel Gluchowski, Montserrat Casas-Cabanas, Pedro Lopez-Aranguren
Summary: In this study, a two-step process to fabricate LLZO electrolytes with a high relative density under low temperature was proposed. The high-pressure low-temperature method was used to achieve high ionic conductivity, and the practical application was demonstrated through experiments on lithium stripping and plating. This research provides guidelines for controlling the microstructure of LLZO and contributes to the understanding of the correlations between microstructure and conductivity.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Ning Guo, Hui-Zhen Shen, Ping Shen
Summary: This article describes a one-step low-temperature reactive cold-sintering approach for preparing bulk BaTiO3 ceramics with nanograins. Densification is achieved through pressure-induced particle rearrangement and deposition of the reaction product, as well as grain coarsening. This method can also be applied to similar ceramics.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Subramani Supriya
Summary: High-quality lead-free relaxor-ferroelectric BCNT electroceramics were fabricated using the modified Pechini method, and the influence of cerium dopant on the material properties was studied. The doping affected the density and sintering temperature, but had a positive effect on crystallinity. BCNT ceramics showed increased grain size and significant changes in shrinkage, making them suitable for commercial applications such as electrode systems and multi-layered structures.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Dongqian Wang, Lu Yin, Albrecht Haenel, Uwe Teicher, Lars Penter, Andre Seidel, Simon Harst, Steffen Ihlenfeldt
Summary: This paper evaluates the performance of a new type of finer-grained, binderless end mill for high-speed machining of hardened steel. The study compares it to polycrystalline cBN end mills and analyzes their cutting performance in terms of cutting force, friction coefficient, milling temperature, and tool wear. The results show that the new end mill has longer tool life and better reliability at high temperatures, indicating its great application potential.
CERAMICS INTERNATIONAL
(2023)
