Article
Materials Science, Ceramics
Yi-Hsin Lin, Fu-Su Yen, Hsing- Hsiang, Man-Nee Lee
Summary: This study investigates a quasi-synchronous solid-state reaction for synthesizing cordierite powder using talc, kaolinite, and Al2O3 mineral powders as starting materials. The thermal reaction proceeds in two stages, with different temperatures required based on the Al sources provided. Mixing α-cordierite powder with the starting constituents allows for the temperature of the first stage to coincide with that of the second stage. Excess SiO2 released in the second stage compensates for the insufficient SiO2 in the first stage, resulting in a smooth processing reaction and the formation of α-cordierite.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Engineering, Chemical
Juan P. Yasno, Susana Conconi, Gustavo Suarez
Summary: m-Li2ZrO3 powders were successfully prepared by solid-state reaction method, exhibiting high crystallinity and potential use in UV-C applications, with particle size ranging from 200nm to 1μm.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Jianmin Luo, Lei Wang, Zhipeng Sun, Ping Liu, Yinlong Lai, Lejie Zhu, Huishi Guo
Summary: In this study, bismuth ferrite (BiFeO3) nanopowder was synthesized using different polymerization degrees of polyethylene glycol (PEG). The results showed that the polymerization degree of PEG significantly influenced the morphology and size of the synthesized products, as well as the magnetic and spectral properties.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Hao Chen, Yingqin Wang, Jiaqing Su, Liyun Yang, Hao Bai
Summary: In this study, a molten salt method was proposed to prepare La2Zr2O7 by improving the kinetic conditions of synthesis. Different particle sizes of ZrO2 and La2O3 were used as raw materials, and the synthesis experiment was conducted at 900-1300 degrees C. The results showed that the particle size of ZrO2 played a crucial role in the synthesis of La2Zr2O7. The use of ZrO2 with a nominal particle size of 50 nm significantly improved the kinetic condition of the reaction, reducing the synthesis temperature and enabling energy-saving synthesis of pyrochlore La2Zr2O7.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Choong Ki Lee, Young Jin Kim
Summary: The changes in crystallographic parameters of Y0.79-zAlzYb0.18Er0.03NbO4 powders with varying Al content were determined using Rietveld refinement, revealing the effects of Al3+ ions on interatomic distance and polyhedral distortion index. Analysis of UC and DC spectra showed that a two-photon energy transfer process between Yb3+ and Er3+ contributed to increased emission intensities at z = 0.2. Additionally, the crystal-field asymmetry around Yb3+ and Er3+, influenced by the highest polyhedral distortion at z = 0.2, played a role in enhancing UC emissions.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. Naga Sravanthi, J. Sudagar
Summary: A ceramic material consisting of a binary oxide of zirconium and titanium was synthesized, and its crystal structure, optical properties, and dielectric properties were studied. The results showed that the sintering temperature influenced the grain size, crystal structure, and band gap, while the dielectric properties were affected by both frequency and sintering temperature.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Lei Jia, Ming-fang Yang, Shi-ping Tao, Hui Xie, Zhen-lin Lu, Katsuyoshi Kondoh, Zhi-guo Xing
Summary: Cu-Ni-Si powder compacts were prepared by mechanical mixing and cold-pressing, followed by heat treatment and water quenching. The microstructure and phase composition of the samples were analyzed using various techniques, revealing the formation of Ni31Si12 phase and Ni2Si precipitations at different temperatures. The final microstructure of Cu-Ni-Si powder system after sintering showed a combination of Cu(Ni,Si) solid solution and equiaxed Ni31Si12 phase, which could potentially achieve high strength and electrical conductivity after heat treatments.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
M. Jothibas, M. Elayaraja, E. Paulson, Soorya Srinivasan, B. Arun Kumar
Summary: Doping Ni and Cd into ZnS nanoparticles can improve their microstructure, morphology, and optical properties. The (ZnS1-0.05Ni0.05Cd0.01) sample exhibits excellent photocatalytic degradation activity for organic pollutants in wastewater, with a degradation rate of 96.67% for Methylene Blue. The findings demonstrate the potential of minimal doping concentrations for dynamic degradation of organic dyes.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Ceramics
Emre Tekoglu, M. Lutfi Ovecoglu, Duygu Agaogullari
Summary: A solid-state reaction route combining HEBM and annealing was used to synthesize HfC-HfB2 composite powders in this study. The effects of HEBM duration and excess reductant amount on the reaction mechanism and product phases were investigated. XRD analysis showed that the content of HfC phase increased while the content of HfO2 phase decreased with longer milling duration and higher reductant amounts.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Lu Xie, Hongzhi Zhang, Jiawei Fu, Fenzhong Long, Jin Han, Xinmin Zhang
Summary: This study investigated the luminescence properties of K2MgSi3O8:Eu2+ phosphor using XRD, PL, and decay analysis. It was found that only one K+ site was substituted by Eu2+ in the K2MgSi3O8 host lattice. However, multiple Eu2+ sites were observed, which can be explained by a charge compensating mechanism. This suggests that unequal substitution is a meaningful approach to discovering new luminescent materials.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Jiaqi Zhang, Hao Song, Yanjie Zhang, Xiuping Wu, Bing Li, Jingjie Yu
Summary: A series of Yb2+ and Dy3+ doped SrSi2O2N2 phosphors with enhanced crystallinity and photoluminescence properties were successfully synthesized using Sr2SiO4 as precursor. The Yb2+ ions can substitute Sr sites in SrSi2O2N2 crystal, showing pure phase and well-crystalline. Co-doped SrSi2O2N2 phosphors exhibit a unique thermal-stimulated luminescence property under NUV excitation, indicating potential application in optical information storage.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
Leilane R. Macario, Andrew Golabek, Holger Kleinke, Edson R. Leite
Summary: This study investigated the thermoelectric properties of Sn1-xSbxO2 ceramic pellets and found that the addition of Sb significantly altered the electrical conductivity and carrier concentration, leading to improved thermoelectric performance with the best composition being Sn0.98Sb0.02O2.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Bijaylaxmi Biswal, Dilip Kumar Mishra, Jyoshnarani Mohapatra, Satyanarayan Bhuyan
Summary: This study synthesized aluminosilicate ceramics of three different compositions using the conventional high-temperature solid-state reaction technique and systematically investigated their properties. The results showed that these ceramics have good physical and electrical properties, making them suitable for applications such as electronic substrates, packaging materials for high-frequency circuits, and infrared transmitting window materials.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Chemistry, Multidisciplinary
Yufeng Xie, Zhiqiang Wang, Dan Wang, Yunbing Zhou, Yunxiang Lei, Wenxia Gao, Miaochang Liu, Xiaobo Huang, Huayue Wu
Summary: Novel 4H-pyran derivatives were designed and synthesized, in which the strong pi-conjugation effect of the benzofuran and benzothiophene units contributes to the photochromic activities. These compounds exhibit reversible photochromism in the solid state and show potential for development as rewritable optical recording media.
MATERIALS CHEMISTRY FRONTIERS
(2021)
