Article
Multidisciplinary Sciences
Jung Eun Lee, Eunbee Kim, Joung Boon Hwang, Jae Chun Choi, Jong Kwon Lee
Summary: The purpose of this study is to investigate the conditions leading to the formation of flakes in glass containers and to identify the components of the suspended flakes. Results show that flakes are formed under specific temperature, pH, and solution composition conditions. The composition of the flakes was identified as a mixture of hydrates of magnesium, calcium, and aluminum silicate.
Article
Materials Science, Ceramics
Santosh Kumar, K. Singh, Devender Kumar
Summary: Glass composition (64-y)SiO2 -yB2O3 -16Na2O -12CaO -2Al2O3 -6MgO (y = 2, 4, and 6 mol%) was prepared by melt-quench technique. The addition of B2O3 increased the hardness, fracture toughness, and coefficient of thermal expansion. Structural change was observed as Q3 units increased at the expense of Q2 and Q1 units. Optical band gap and Urbach energy did not show a specific trend due to the mixed glass former effect. The highest optical band gap was found in the 62S-2B sample. Transparency and hardness were comparable to commercially available windshield glasses. These findings can be used to optimize glass composition for automobile applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Rita Slilaty Pipes, James E. Shelby
Summary: The glass formation region has been determined for the soda lime germanate system, which includes both homogeneous and phase separated glasses. The homogeneous glasses exhibit behavior typical of the germanate anomaly, while the phase separated glasses' properties can be explained by considering the effect of morphology.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Electrical & Electronic
Chahira Ben Amara, Helmi Hammami, Slim Fakhfakh, Ali Kallel
Summary: The study revealed that the ZrO2 doping content has a significant influence on the electrical and dielectric properties of soda lime silicate glass, leading to a decrease in electrical parameters and an increase in resistivity. The addition of ZrO2 makes the internal structure of the glass more polymerized, electrically rigid, and resistant to the flow of free charge carriers.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Ceramics
Marina Konon, Tatiana Antropova, Nikita Zolotov, Tatiana Simonenko, Nikolay Simonenko, Elena Brazovskaya, Valery Kreisberg, Irina Polyakova
Summary: The chemical durability of phase-separated glasses in the Na2O-B2O3-SiO2-Fe2O3 system was studied in boiling 3M aqueous HCl solution. The coordination of Fe3+ cations affected the leaching behavior, and a correlation with the Yun-Bray-Dell model was observed. Certain glass compositions were suitable for through-leaching and obtaining porous glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Erhan Kilinc, Anthony M. T. Bell, Paul A. Bingham
Summary: In this study, the in situ dynamic crystallization properties of industrial soda-lime-silica glasses at realistic processing temperatures were investigated. Unique crystalline phases were observed at lower temperatures, and high-temperature stable SiO2 polymorphs were also observed. The main predictor variables in the previously developed liquidus temperature models were found to be questionable, and a large difference between glass processing and liquidus temperatures was identified.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Andrea Bernasconi, Monica Dapiaggi, Chiara Milanese, Marco Alloni, Alessandro Pavese
Summary: The atomic structure of a soda-lime-aluminosilicate network glass that underwent two different thermal treatments has been investigated using in-situ Synchrotron Powder Diffraction experiments. The study revealed the volume variations, relaxation level, short range order characteristics, and structural features of the samples under different thermal treatments. The results describe the multiple over temperature phenomenology of the composition and show how the local range behaves independently from the sample's thermal history.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Nanoscience & Nanotechnology
Levent Karacasulu, Ezgi Ogur, Cerem Piskin, Cekdar Vakifahmetoglu
Summary: The ordinary recycled soda lime glass powder was densified through cold sintering process with the aid of concentrated NaOH solution. Increasing processing time, temperature, and concentration of NaOH solution led to the formation of monolithic glass artifacts with higher relative densities. The highest densification (95.2%) was achieved when sintering was done at 250 degrees C for 20 minutes using 15 M NaOH solution.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Ceramics
Rajan Saini, Daniel R. Neuville, Randall E. Youngman, Ashutosh Goel
Summary: The addition of V2O5 in borosilicate glasses increases the solubility of sulfur, but the mechanism behind this effect is still unclear. This study investigates the structure and redox properties of V2O5-containing glasses and finds that the addition of V2O5 leads to a linear increase in sulfur solubility. Based on the results, it is hypothesized that adding vanadium enhances network connectivity but reduces network rigidity.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
M. A. Ouis, W. M. Abd-Allah, O. Sallam
Summary: Soda lime silicate glasses doped with metal oxides were synthesized and their optical and physical properties as well as the effect of gamma irradiation were investigated. The FTIR analysis showed characteristic bands for silicate units, while UV-Vis spectra revealed absorption bands of different metal oxides. After gamma irradiation, changes in the glass network stability and the appearance of new defects were observed. ESR spectroscopy elucidated the defect centers induced by ionizing gamma irradiation.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
Yuya Hamada, Akira Sasaki, Masahiro Shimizu, Yasuhiko Shimotsuma, Kiyotaka Miura
Summary: The role of non-bridging oxygens in the volume relaxation of soda-lime aluminosilicate glasses below the glass transition temperature was investigated using experimental and theoretical approaches. The results showed that glasses with a higher number of non-bridging oxygens exhibited greater shrinkage. A theoretical equation for determining the volume relaxation time was proposed and validated. Molecular dynamics simulations also revealed that the stericity of the rings in the glass network affects volume relaxation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Youssef Ouldhnini, Achraf Atila, Said Ouaskit, Abdellatif Hasnaoui
Summary: This paper investigates the effect of density on the dynamics of atoms in bioactive glasses using molecular dynamics simulations. The study finds that the mobility of modifiers, especially sodium, is significantly affected by the increase in density. The complex dynamic behavior of the glass can be understood by evaluating network connectivity and pair-excess entropy.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Nanoscience & Nanotechnology
Yuya Hamada, Teppei Murota, Masahiro Shimizu, Yasuhiko Shimotsuma, Kiyotaka Miura
Summary: Structural relaxation is a widely studied phenomenon in glassy systems, but its origin from a glass structural viewpoint is not clearly defined. In this study, volume relaxation, Raman spectroscopy, and surface resistivity measurements were performed on soda-lime silicate glasses before and after annealing, revealing reorganization of the SiO2 network, transfer of Na ions, and segmentation of the ion channel region during structural relaxation.
Article
Chemistry, Physical
Stefan Karlsson
Summary: TiO2 is an important oxide in the soda lime silicate glass family, offering interesting optical and mechanical properties. The effects of composition on hardness, reduced elastic modulus and crack resistance in CS TiO2-doped soda lime silicate glass were studied. The CS process resulted in increased hardness and varying effects on reduced elastic modulus. Crack resistance showed different behaviors among the series.
Article
Materials Science, Ceramics
Matthieu Chazot, Maxime Paraillous, Stephane Jouannigot, Lionel Teule-Gay, Jean-Paul Salvetat, Frederic Adamietz, Ricardo Alvarado-Meza, Lara Karam, Angeline Poulon, Thierry Cardinal, Evelyne Fargin, Marc Dussauze
Summary: The study explored non-contact thermal poling of soda lime silicate glasses using DC gas discharge, showing that glasses poled under nitrogen exhibited enhanced mechanical and chemical properties with a silica-like layer formed on the surface. In contrast, glasses poled under air formed a hydrated alkaline earth silica layer. The sustainability of the plasma under DC conditions was proposed to be attributed to these observations.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Boris Venague, Lionel Campayo, Michael J. Toplis, Thibault Charpentier, Melanie Moskura, Jean-Luc Dussossoy
Summary: Investigated the influence of alkali elements on the incorporation mechanisms and incorporation limit of iodine in borosilicate glasses used for nuclear waste immobilization. Found that high alkali content and high concentrations of Na2O are particularly favorable for iodine incorporation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Optics
L. H. C. Andrade, S. M. Lima, R. A. Silva, M. R. Devecchi, J. C. S. Moraes, D. de Ligny, L. A. O. Nunes
Summary: For the first time, Eu2O3-doped lithium tellurite (TL) glasses were synthesized under vacuum conditions. The structural and optical spectroscopic properties were discussed. The investigation showed that the Eu3+-doped TL-vac glasses prepared under vacuum had low OH- concentration, resulting in increased transparency in the visible spectral range and mid-infrared spectral region. Luminescence spectra exhibited emission bands from various energy levels, and time-resolved luminescence experiments revealed energy relaxation and migration among different energy levels due to Eu3+ ions pairs. Judd-Ofelt analysis of the emission spectrum indicated that Eu3+ in TL-vac glass had less covalent characteristics compared to other tellurite glasses, with a quantum efficiency of 51% for the 5D0 energy level. These results suggest that TL-vac glass doped with rare earths has potential for new optical devices.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
M. R. Cicconi, R. Belli, M. Brehl, J. Lubauer, T. Hayakawa, K. Kimura, T. Hirota, K. Usui, S. Kohara, Y. Onodera, U. Lohbauer, K. Hayashi, D. de Ligny
Summary: The influence of time and temperature on phase stabilisation, crystal phases evolution, and physical properties of lithium-silicate were studied. The effect of nucleation temperature on mineral assemblage and fracture toughness was observed through reverse-engineering a commercial material. The spatial distribution of structural units influenced the final properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Physics, Multidisciplinary
Ferdinand Werr, Urs Eppelt, Ludger Muellers, Dominique de Ligny
Summary: Utilizing ultra-short-pulse laser filamentation of glass is a new technique for glass cutting, which has the advantages of small heat-affected zone and quasi-non-gap cut. However, the cleaving process and underlying mechanisms are still not well understood. In this study, a specially designed optic was used to generate laser filamentation in different types of glass, and the filaments and cut edge were analyzed. Based on the observations, models were proposed to describe the micro crack formation caused by laser pulses.
FRONTIERS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Nesrine Guesmia, Majda Hamzaoui, Lina Beghdadi, M. T. Soltani, D. de Ligny
Summary: In this study, the thermal, physical, mechanical, and structural properties of the new series of SWN glasses were examined. It was found that the addition of NaPO3 content could increase the stiffness of the glass system, as well as the glass transition temperature and elasticity modulus.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Patrick Duchstein, Philipp Schodder, Simon Leupold, Thi Q. N. Dao, Shifi Kababya, Maria R. Cicconi, Dominique de Ligny, Vitaliy Pipich, David Eike, Asher Schmidt, Dirk Zahn, Stephan E. Wolf
Summary: This study reveals the molecular mechanisms by which small-molecular-weight additives impact amorphous calcium carbonate (ACC), stabilizing its structure and preventing crystallization through interactions with prenucleation clusters (PNCs). These findings are significant for understanding the role of small-MW molecules in crystallization and biomineralization, and provide a theoretical basis for the development of new sustainable antiscalants.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Udo Eckstein, Neamul H. Khansur, Michael Bergler, Daisuke Urushihara, Toru Asaka, Ken-ichi Kakimoto, Matej Sadl, Mirela Dragomir, Hana Ursic, Dominique de Ligny, Kyle G. Webber
Summary: The room temperature aerosol deposition method shows great potential for the rapid deposition of ceramic thick films. However, challenges remain in terms of electrical conductivity and internal stresses in as-deposited films. In this study, a novel technique using a sacrificial water-soluble buffer layer was employed to fabricate freestanding ceramic thick films, allowing for direct observation of the film's properties. The temperature-dependent chemical and structural relaxation phenomena in freestanding BaTiO3 films were investigated, revealing the influence of lattice defects and introducing insight into the origin of high room temperature conductivity in as-deposited films.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Alexander Martin, Martin Brehl, Neamul H. Khansur, Ferdinand Werr, Dominique de Ligny, Kyle G. Webber
Summary: In this study, in situ stress-dependent Raman and Brillouin spectroscopy were used to investigate the polycrystalline NBT-7BT. The results revealed stress-dependent changes in elastic properties and the appearance of a transversal acoustic wave mode, which were similar to the changes in crystallographic structure and ferroelectric order.
Article
Materials Science, Multidisciplinary
Ahmed Gadelmawla, David Dobesh, Udo Eckstein, Oliver Gruebl, Matthias Ehmke, Maria Rita Cicconi, Neamul H. Khansur, Dominique de Ligny, Kyle G. Webber
Summary: The influence of stress on the phase boundaries and dielectric response of lead-free perovskite ceramics was investigated. The results showed that the phase transition temperatures increased and the dielectric and piezoelectric responses decreased with increasing stress. Additionally, applying stress at certain temperatures could enhance the dielectric properties of the ceramics.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Larissa Wahl, Maria Rita Cicconi, Michelle Weichelt, Dominique de Ligny, Nahum Travitzky
Summary: Raman investigations were performed to estimate the residual stresses in layered composites, and it was found that there were differences in stresses among different layers. By adjusting the paste composition, crack-free layered composites were successfully obtained.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Amreen Jan, Jean-Marc Delaye, Huseyin Kaya, Seong H. Kim, Anamul Haq Mir, Thibault Charpentier, Frederic Angeli, Stephane Gin
Summary: In this study, the behavior of pristine and preirradiated glasses under aqueous corrosion conditions was investigated using experimental and simulation methods. The results showed that preirradiation significantly increased the initial dissolution rate and the depth of the alteration layer. Furthermore, radiation-induced structural changes and enhanced water diffusion were observed.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2023)
Article
Chemistry, Physical
Thilo Grammes, Dominique de Ligny, Franziska Scheffler, Alina Nizamutdinova, Leo van Wuellen, Efstratios I. Kamitsos, Jonathan Massera, Delia S. Brauer
Summary: The structure of metaluminous aluminosilicate glasses in the SiO2-Al2O3-Na2O-P2O5 system was investigated, revealing the incorporation of phosphate into the network structure. Changes in phosphate content resulted in depolymerization of the network structure, while increasing silica content had a minimal effect on network polymerization. These changes correlated with variations in glass transition temperature and spectroscopic properties.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Physical
Berengere Evin, Mathieu Segard, Eric Leroy, Walid Baaziz, Valerie Paul-Boncour, Sylvain Challet, Arnaud Fabre, Stephanie Thiebaut, Michel Latroche, Melanie Moskura, Thibault Charpentier
Summary: This study aimed to improve the understanding of the Pd tritide aging process through experimental and theoretical research. Aging of tritide produces 3He, creating nanobubbles in the metal matrix. Pd samples were aged for up to 20 years, covering the stages of bubble nucleation, growth, and 3He release. Experimental measurements were used to enhance the modeling of the aging mechanism, leading to a proposed mechanism for the 3He release. The models align with microscopic and macroscopic observations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Christophe Legein, Monique Body, Jerome Lhoste, Wei Li, Thibault Charpentier, Damien Dambournet
Summary: CaTiF6(H2O)2 is isostructural to SrTiF6.2H2O and its structure is composed of dimers [Ca2F10(H2O)4], square antiprisms [CaF5(H2O)3] and TiF6 octahedra. 19F NMR resonances were assigned to fluorine crystallographic sites through the calculation of magnetic shielding tensors. The experimental structure shows better agreement with the experimental data compared to the DFT-optimized structure. The refinement of the Ti-F bond lengths leads to a revised bond-valence parameter Rij of 1.706 angstrom for the Ti4+/F- ion pair.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Sathya Narayanasamy, Patrick Jollivet, Christophe Jegou, Melanie Moskura, Abdesselam Abdelouas, Thibault Charpentier, Frederic Angeli
Summary: A study was conducted on the alteration of a Na-alumino-borosilicate glass and its Ca-doped counterpart in vapor phase and aqueous medium. The results showed differences in alteration kinetics, behavior of elements, and gel layer structure between the two alteration media, and provided insights into the mechanisms of glass alteration in these media.
NPJ MATERIALS DEGRADATION
(2022)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
