Article
Materials Science, Ceramics
Rajat Bajaj, A. S. Rao, G. Vijaya Prakash
Summary: This paper reports the synthesis of thermally stable borosilicate glasses doped with europium ions. Characterization techniques such as XRD, DSC, and TGA were used to study the optical properties and thermal stability of the glasses. The research also analyzed the PL excitation, emission, and decay of the glasses for potential application in visible red photonic devices.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Adon Jose, T. Krishnapriya, Twinkle Anna Jose, Cyriac Joseph, N. V. Unnikrishnan, P. R. Biju
Summary: The study of Eu3+/Nd3+ co-doped multicomponent borosilicate glasses revealed enhanced fluorescence effect with the presence of Eu3+ ions in Nd3+ doped glasses, indicating a potential candidate for visible and NIR luminescence applications. Energy transfer mechanism between RE3+ ions was identified, and radiative properties, lasing characteristics, and quantum efficiency were evaluated in comparison with other Nd3+ glasses. The CIE chromaticity diagram showed a shift towards reddish-orange region with increased Eu3+ concentration.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Sumandeep Kaur, Vaibhav Katyal, Vaishakh Plakkot, Nisha Deopa, Aman Prasad, A. S. Rao
Summary: In this study, Sm3+ ions doped borosilicate glasses were synthesized with different concentrations (0.5 to 2.5 mol%) using the melt quench method. The structural analysis and optical properties of these glasses were studied, revealing characteristics such as amorphous nature, band gap energy, and photoluminescent excitation and emission peaks.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Jiuzhi Cui, Xin-Yuan Sun, Yufeng Wen, Chenxi Zhang, Runchuan Chen, Miaochun Wu, Meidong Yu, Chaoyuan Li, Zhuohao Xiao, Jing Wang
Summary: In this study, the emission peak of europium (Eu) ions in borosilicate glasses is tuned by adjusting the SiO2 to B2O3 ratio and the concentration of Eu ion dopants. It is observed that the emission peak can be redshifted by increasing the content of SiO2 or by introducing Eu2O3. Cyan emission is achieved by altering the [SiO4] tetrahedra, [BO4] tetrahedra, and [BO3] triangles within the glass. The results highlight the relationship between glass network structure, Eu ion concentration, and visible light emission.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
N. Elkhoshkhany, Samir Marzouk, M. El-Sherbiny, Hend Anwer, Mohammed S. Alqahtani, H. Algarni, Manuela Reben, El Sayed Yousef
Summary: A new series of borosilicate glass doped with Dy3+ ions was manufactured using a glass-quenching technique, showcasing unique luminescence properties with intense emission bands. The fabricated glass was used as a solid laser source for white light production, demonstrating strong emission transitions and high branching ratios. The study also evaluated physical parameters and bonding nature of the glass, suggesting potential applications in luminescent display devices as a white light laser diode.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Sk Nayab Rasool, Sk Shabeena, C. R. Kesavulu, S. Babu
Summary: This study investigates the fluorescence properties of samarium (III) ions in fluoro-borate glasses. Various tests including X-ray diffraction, Fourier transform infrared, and UV-Vis-NIR spectroscopy were conducted. The absorption spectra were used to determine the radiative properties of samarium (III) ions, while the emission spectrum was used to calculate the effective bandwidth and empirical branching ratios. The study also proposes the energy transmission mechanism between samarium (III) ions as dipole-dipole interaction.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Optics
I Khan, M. Shoaib, Norah Salem Alsaiari, S. M. Wabaidur, G. Rooh, N. Srisittipokakun, I Ullah, J. Kaewkhao
Summary: Glass sample with B2O3-SiO2-CaO-BaO: Sm2O3 formula was synthesized and its optical and luminescence properties were investigated. The results show that the glass has high compactness and rigidity, making it suitable for multi-color display device applications.
Article
Optics
Anu, Nisha Deopa, A. S. Rao
Summary: The structural, thermal, and photoluminescence properties of Dy3+ doped OFSZBS glasses were investigated. The results showed that the optical properties of the glass can be modified by doping Dy3+ ions, and the highest photoluminescence intensity was observed at a concentration of 1 mol% Dy3+ ions. Additionally, the synthesized glasses exhibited high thermal stability and are suitable for photonic devices.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Ramandeep Kaur, R. B. Rakesh, Sachin G. Mhatre, Vijeta Bhatia, Dinesh Kumar, Harpreet Singh, Supreet Pal Singh, Ashok Kumar
Summary: This paper investigates the characterizations of Ce2O3-doped sodium magnesium borosilicate glasses, focusing on their structural, optical, and thermoluminescence properties. Different analytical techniques were used to study the effects of Ce2O3 concentration on the glasses, with the glass containing 0.2 mol% Ce2O3 showing outstanding thermoluminescence intensity and linear response under gamma exposure. This glass has potential applications in dosimetry.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Augusto Anselmo Amaro, Guilherme Rodrigues da Silva Mattos, Marcos Vinicius de Morais Nishimura, Jessica Dipold, Niklaus Ursus Wetter, Luciana Reyes Pires Kassab
Summary: This study investigates the optical properties of GeO2-PbO glasses doped with Yb3+ ions and Ag nanoclusters (NCs) produced through the melt-quenching technique. The lack of research on the energy transfer between these species in these glasses motivated this study. Tunable visible emission, ranging from blue to orange, was observed depending on the Yb3+ concentration, which affects the size of the Ag NCs. The transfer of energy from Ag NCs to Yb3+ ions was attributed to a decay mechanism and was supported by changes in lifetimes and photoluminescence measurements.
Article
Materials Science, Ceramics
Qinyang Zhang, Jiayan Liao, Qiqiang Huang, Niu Lai, Bowen Zhang, Xiaoming Wen, Jie Yang, Yu Yang, Juan Wang, Genlin Zhang, Chong Wang, Rongfei Wang
Summary: In this study, Bi-ion doped borosilicate glasses were prepared with tunable visible emissions by changing the content of B2O3. The optical properties, structure, and temperature-dependent emission were systematically investigated. The emission bands of Bi-ion doped glasses show a blue shift with increasing B2O3 concentration, and the emission intensity reaches its maximum at 5% B2O3 concentration. Thermoluminescence was also observed in this glass system. The results promote the research of tunable luminescence in Bi-ion doped glasses by modifying the glass network structure.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
A. Manivannan, G. Saravanan, P. Ravisankar, Soumee Chakraborty, Kitheri Joseph, V Jayaraman
Summary: Enthalpy increment data were obtained for borosilicate and doped borosilicate glasses containing uranium oxides and plutonium surrogates. The specific heat of the glasses was calculated and compared, and the thermal stability and network structure of the glasses were investigated using micro Raman spectroscopy.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Nicholas J. Tostanoski, S. K. Sundaram
Summary: We report a linear correlation between refractive indices of visible-terahertz frequencies in sodium borosilicate glass system. Raman spectroscopy was used to analyze glass structure and the properties including physical, thermal, and optical. Experimental results showed that depolymerized or polymerized glass networks have higher refractive indices at these frequencies.
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
(2023)
Article
Engineering, Electrical & Electronic
Rajat Bajaj, Aman Prasad, A. V. S. Yeswanth, Pooja Rohilla, Sumandeep Kaur, A. S. Rao
Summary: In this research, Dy3+ doped AZABS glasses were prepared and their photoluminescent properties and energy transfer mechanism were investigated. It was found that the glass doped with 0.5 mol% Dy3+ exhibited the highest luminescence intensity and could produce cool white light. These Dy3+ doped glasses are proposed to be potential materials for optoelectronic devices such as solid-state lighting and w-LEDs.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Igor Krol, Roman Avetisov, Marina Zykova, Ksenia Kazmina, Olga Barinova
Summary: New optical glasses containing tetrahedral cobalt ions have been synthesized and their properties studied. The glasses showed absorption bands and transitions corresponding to tetrahedral and octahedral cobalt ions.
Article
Materials Science, Ceramics
Yi Zong, Zixing Peng, Qian Dong, Wanbing Hu, Dandan Yang, Qianyi Guo, Zhiwu Chen, Guoping Dong
Summary: By doping tungsten, the specific surface area and photocatalytic performance of g-C3N4 material can be improved, and it shows excellent performance in the degradation of Rhodamine B and hydrogen evolution.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Optics
Wei Wang, Qinpeng Chen, Yifei Zhao, Yakun Le, Shengda Ye, Mang Wan, Xiongjian Huang, Guoping Dong
Summary: With the increasing demand for broadband optical amplifiers due to the growth of optical communications traffic, it is important to develop a gain medium that can cover a wider range of optical communication bands. This study successfully precipitated PbS quantum dots and BaF2 : Tm3+ nanocrystals in the same glass, forming two independent emission centers. By adjusting the heat treatment schedule, the emission from both centers perfectly splices and covers an ultra-broadband near-infrared emission.
CHINESE OPTICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhihao Zhou, Shuai Zhang, Yakun Le, Hong Ming, Yang Li, Shi Ye, Mingying Peng, Jianrong Qiu, Guoping Dong
Summary: The near inverse spinel structure activates the near-infrared persistent luminescence of Fe3+ and shows that more defects participate in the trapping and de-trapping of charge carriers. These findings are expected to drive the development of new Fe3+ doped persistent luminescence materials for various biological applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Daiwen Xiao, Xiongjian Huang, Yangke Cun, Zhen Hu, Zan Xu, Xue Bai, Yingzhu Zi, Lixiang Fu, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Guoping Dong, Zhengwen Yang
Summary: The photochromic glass doped with rare-earth ions was investigated under fs laser irradiation, showing fast response and high upconversion luminescence modification. It can be used for 3D information storage.
SCIENCE CHINA-MATERIALS
(2022)
Article
Optics
Wang Wei, Gu Quan, Chen Qinpeng, Yin Bozhao, Li Guozhen, Wan Mang, Huang Xiongjian, Dong Guoping
Summary: This study presents the preparation and characterization of an all-solid-state PbSe QD-doped glass fiber with tunable broadband MIR emission. A size-controllable PbSe QD-doped glass was prepared and achieved broadband tunable emission in the MIR regions of 1.8-2.8 μm. The PbSe QD-doped glass fiber was successfully prepared using the melt-in-tube melting method, and it was characterized using EPMA. There was no evidence of elemental migration in the glass fibers, which had a complete core-cladding structure. When excited by an 808 nm laser, PbSe QD-doped glass fibers produced broadband tunable emission within 1.8-2.8 μm, which was expected to be used as a broadband tunable MIR light source.
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
(2022)
Article
Materials Science, Ceramics
Minbo Wu, Guowu Tang, Guoquan Qian, Qi Qian, Dongdan Chen, Guoping Dong, Zhongmin Yang
Summary: This article presents a new method for describing and predicting the structural features and physical properties of multicomponent oxide glasses. By considering multicomponent oxide glasses as a statistical ensemble of neighboring glassy compounds, the NGCs method is proposed and verified through molecular dynamics simulations. This work is of great significance for accelerating the research of glass materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Weiwei Chen, Xiongjian Huang, Quan Dong, Zhihao Zhou, Puxian Xiong, Yakun Le, Enhai Song, Jianrong Qiu, Zhongmin Yang, Guoping Dong
Summary: The rapid development of NIR spectroscopic techniques has facilitated the exploration of novel broadband NIR-emitting materials. However, the pursuit of high-efficiency and thermally stable photonic materials with broadband NIR emission is still unsatisfactory. In this study, a thermally stable Bi-doped germanate glass with tunable broadband NIR emission was designed, demonstrating great potential for applications in compact NIR light sources.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Linxiang Zeng, Xiongjian Huang, Yakun Le, Xinming Zhou, Wenyan Zheng, Christoph J. Brabec, Xvsheng Qiao, Fei Guo, Xianping Fan, Guoping Dong
Summary: A reversible synthesis of halide perovskites on Pb13O8(OH)6(NO3)4-ZIF-8 composites enables information encryption and decryption. The films can be encrypted and decrypted multiple times through reaction with halide ammonium salt.
Article
Oncology
Fangying Fan, Guoping Dong, Chuanhui Han, Wenzhen Ding, Xin Li, Xuejuan Dong, Zhen Wang, Ping Liang, Jie Yu
Summary: This study aimed to explore the prognostic value of peripheral immune factors (PIFs) for early recurrence (ER) prediction of hepatocellular carcinoma (HCC) after thermal ablation. Different models were constructed and evaluated using area under the curve, recurrence-free survival analysis, and log-rank tests. The results showed that peripheral immune factors, when combined with clinical parameters, improved the accuracy of early recurrence prediction after thermal ablation for HCC, and aided in risk stratification of patients.
INTERNATIONAL JOURNAL OF HYPERTHERMIA
(2023)
Article
Materials Science, Ceramics
Weiwei Chen, Yafei Wang, Jing Zhang, Baotian Qiu, Jianrong Qiu, Guoping Dong
Summary: In this study, a metal reduction strategy was used to create a chemically reductive environment during glass melting and enhance the local network rigidity. This led to the achievement of a super broadband near-infrared (NIR) emission covering the entire telecommunications window with greatly enhanced intensity in Bi-doped germanate glasses. The super broadband NIR emission showed excellent thermal stability even after the glass was drawn into an optical fiber, and the fiber exhibited low transmission loss and an obvious broadband amplified spontaneous emission spectrum.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Optics
Juan Kang, Tao Liu, Mou Yan, Dandan Yang, Xiongjian Huang, Ruishan Wei, Jianrong Qiu, Guoping Dong, Zhongmin Yang, Franco Nori
Summary: Recently, higher-order topological insulators (HOTIs) with topologically nontrivial boundary states have been extensively studied. A novel type of HOTIs called square-root HOTIs, where the topological nature comes from the square of the Hamiltonian, has been experimentally demonstrated in 2D photonic waveguide arrays written in glass using femtosecond laser direct-write techniques. The presence of edge and corner states at visible light spectra has been confirmed experimentally, and the dynamical evolutions of topological boundary states have been observed, suggesting potential applications in information processing and lasing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Guozhen Li, Qiwen Pan, Zhihao Zhou, Ranran Gu, Hao Zhang, Xiongjian Huang, Guoping Dong, Xiudi Xiao
Summary: In this study, a fully dense coating strategy is proposed to improve the overall stability of perovskite CsPbX3 nanocrystals, especially under high-density laser irradiation. A mesoporous silica SiO2 layer and inorganic glass were used to construct a stable coating and eliminate the pores, respectively. The prepared nanocrystal-in-glass composite demonstrated efficient and stable fluorescence performance in various conditions.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Qinpeng Chen, Xiongjian Huang, Dandan Yang, Yakun Le, Qiwen Pan, Mingjia Li, Hao Zhang, Juan Kang, Xiudi Xiao, Jianrong Qiu, Zhongmin Yang, Guoping Dong
Summary: A new strategy to design and fabricate polarized CsPbBr3 quantum dot line arrays in transparent glass using femtosecond laser writing is proposed in this study. Programable 2D and 3D polarized luminescent patterns are created inside the glass for polarization-sensitive optical anti-counterfeiting features. The CsPbBr3 quantum dot line arrays used can be well maintained in water environment.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Dong Guoping, Wan Tianze, Wu Minbo, Pan Qiwen, Qiu Jianrong, Yang Zhongmin
Summary: This paper summarizes different theories and modeling processes of material genetic engineering used in laser and optical functional glasses, and introduces the application of the material genome initiative. By combining computation, data, and experiments, this initiative enables quantitative and accurate prediction of material properties, guiding the design and development of new materials.
LASER & OPTOELECTRONICS PROGRESS
(2022)
Article
Materials Science, Multidisciplinary
Dandan Yang, Tianzhu Zhao, Heng Liang, Juan Kang, Xiongjian Huang, Qiwen Pan, Guoping Dong
Summary: Nanocrystal-in-glass composites (NGCs) are materials consisting of nanocrystals embedded in a glass matrix, allowing control over the phase, morphology, and luminescent performance of the nanocrystals. However, the thermal interaction between nanocrystals or nanocrystals and glass remains a challenge. To address this issue, a protective shell was introduced to expand the range of nanocrystal composition and to minimize interfacial reactions, resulting in efficient mid-infrared emission.
JOURNAL OF MATERIALS CHEMISTRY C
(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)
