Article
Materials Science, Ceramics
Han Chen, Shunzo Shimai, Jin Zhao, Xiaojian Mao, Jian Zhang, Guohong Zhou, Shiwei Wang
Summary: Alumina platelets were horizontally arranged in submicron alumina particles by shear force in the flow, resulting in ceramics with thoroughly oriented grains and high transmittance after pressureless-sintering in vacuum. The densification, grain size, orientation degree, and in-line transmittance of the ceramics all increased with higher sintering temperature. The enhancement of orientation degree was mainly associated with grain growth, leading to significantly higher in-line transmittance compared to randomly oriented samples.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
David Carloni, Guangran Zhang, Yiquan Wu
Summary: Transparent alumina ceramics were successfully fabricated using an extrusion-based 3D printer, with optimized printable slurry recipes and 3D printing parameters, as well as two-step vacuum sintering profiles. The resulting ceramics achieved high density and transparency, demonstrating the competitiveness of 3D printing in transparent ceramic processing.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
R. Klement, K. Drdlikova, M. Kachlik, D. Drdlik, D. Galusek, K. Maca
Summary: Transparent Eu3+-doped alumina ceramics with fine-grained microstructure were studied for their optical properties and photoluminescence. It was found that light transmission through ceramics at high dopant concentrations is dominated by birefringence scattering at grain boundaries, while high photoluminescence intensity is achieved as a result of dopant segregation at grain boundaries. Luminescence decay in these ceramics was single-exponential with a lifetime around 1.5 ms, and the reduction of Eu3+ to Eu2+ under H2 atmosphere was challenging post-sintering. Additionally, two coexisting Eu2+ emitting PL centers were identified, emitting blue and green light with different decay constants.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Katarina Drdlikova, Robert Klement, Jiri Svoboda, Daniel Drdlik, Dusan Galusek, Karel Maca
Summary: Highly transparent Dy3+ and Dy3+/Cr3+ polycrystalline alumina ceramics were prepared, achieving high RIT values and creating a suitable combination for obtaining white light emission spectra.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Robert Klement, Katarina Drdlikova, Daniel Drdlik, Karel Maca
Summary: Transparent alumina doped with rare-earth or transition metal oxides is a group of materials suitable for optical applications. The preparation process requires high-quality starting materials, advanced shaping techniques, and pressure-assisted sintering. Spark plasma sintering and hot isostatic pressing have been proven effective in producing pore-free fine microstructures with high in-line transmission and sufficient intensity of light emission. This review aims to summarize and compare published results on this topic, as well as propose other possible and appropriate approaches for future research.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Vojtech Necina, Willi Pabst
Summary: Sinter-forging is a shaping and densification technique that can be utilized for preparation of transparent ceramics with smaller pore size and higher in-line transmittance compared to conventional SPS.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Optics
Max Whiteman, Stuart D. Jackson
Summary: In this study, we reviewed various theoretical relations for quantifying light scattering and applied them to calculate scattering in transparent glass ceramics (TGCs) composed of nanocrystals within a glass matrix. Material dispersion was included to obtain a realistic depiction of scattering in these materials. The results showed that the different forms of scattering under the Rayleigh-Debye-Gans approximation varied significantly across the visible and near-IR range, and the inclusion of material dispersion changed the trends in calculated scattering cross section.
Article
Materials Science, Ceramics
Liqiong An, Rongwei Shi, Xiaojian Mao, Buhao Zhang, Jianmin Li, Jian Zhang, Shiwei Wang
Summary: In this paper, Si3N4 was used as a solid-state sintering additive to prepare highly transparent and strong AlON ceramics via pressureless pre-sintering and hot isostatic pressing (HIP) at relatively low temperature. The Si3N4 content was found to affect the phase, microstructure, optical property, and flexural strength of the ceramics. The addition of Si3N4 promoted densification and grain growth, resulting in pore-free samples after HIP, which exhibited high transparency and flexural strength.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Materials Science, Ceramics
Han Chen, Jin Zhao, Shunzo Shimai, Xiaojian Mao, Jian Zhang, Guohong Zhou, Shiwei Wang, Na Gu, Kai Zheng
Summary: Transparent Al2O3 ceramics with grains aligned to the c-axis were successfully prepared using platelets with a low aspect ratio. The ceramics achieved a high in-line transmittance of 78.4% at 600 nm, which is the highest reported in literature.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Materials Science, Ceramics
Andrew P. Schlup, William J. Costakis, Jeffrey P. Youngblood, Rodney W. Trice
Summary: The mechanical properties of transparent alumina densified by hot-pressing platelet-morphology powder were characterized and compared to samples using equiaxed (E) powder. The NPA samples exhibited higher characteristic strength and Weibull modulus compared to the PA and E samples due to a tighter grain size distribution. The pre-aligned samples exhibited hardness values nearly identical to sapphire in the corresponding crystallographic directions.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Claire Mevel, Julie Carreaud, Gaelle Delaizir, Jean-Rene Duclere, Francois Brisset, Julie Bourret, Pierre Carles, Cecile Genevois, Mathieu Allix, Sebastien Chenu
Summary: Transparent polycrystalline ZnGa2O4 ceramics were successfully synthesized for the first time using high-energy ball milling, solid-state reaction, and spark plasma sintering techniques, showing high transmittance and excellent microstructure. This research demonstrates the potential applications of transparent ceramics, including potential expansion into the field of laser emission.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Alexandre Le Coz, Guillaume R. Durand, Louis Cornet, Nathalie Herbert, Francis Gouttefangeas, Loic Joanny, Fabrice Celarie, Francois Chevire, Odile Merdrignac-Conanec
Summary: Lanthanum oxysulfide (La2O2S) was investigated as a transparent infrared ceramic with stronger chemical bonds and superior mechanical performances than non-oxide infrared materials. The powders prepared by combustion synthesis followed by sulfurization treatment were hot-pressed to form La2O2S ceramics. Various techniques were used to characterize the powders and ceramics and determine their purity, microstructure, optical, and mechanical properties. The study provides the first transmission spectra, Poisson's ratio, Young's and shear moduli, and fracture toughness values of La2O2S polycrystalline ceramics. The ceramics showed transparency in the 2-11 μm range and outperformed commercial infrared ceramics in terms of mechanical performances. The best transmission (89% of theoretical transmission) was achieved at 7.3 μm for 1 mm-thick ceramics hot-pressed at 1200-1250 degrees C.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Multidisciplinary Sciences
Koji Matsui, Kohei Hosoi, Bin Feng, Hidehiro Yoshida, Yuichi Ikuhara
Summary: The attainment of both high strength and toughness is the ultimate goal for most structural materials. Although ceramic materials have high strength and good chemical stability, they suffer from low toughness. Y-TZP-based ceramic materials with toughnesses exceeding 20 MPa m(1/2) and strengths over 1,200 MPa have been developed by reducing the phase stability of tetragonal zirconia through tailoring microstructure and chemistry, which can further advance the design and application of ceramic-based structural materials.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Materials Science, Ceramics
Masoumeh Shahriari KallehMasihi, Mohammad Reza Loghman Estarki, Hojjatollah Mansouri, Hossein Jamali, Mehran Sardarian, Gholam Reza Gordani
Summary: The purpose of this study is to optimize the feed containing alumina-binder nanoparticles for ceramics injection molding to create transparent alumina parts. The properties of alumina samples prepared using different methods were measured and compared, and the results showed that the combination of ceramic injection molding and spark plasma sintering had better performance.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Wenqiang Xu, Jun Wang, Ying Wang, Qing Li, Jie Ma, Peng Liu, Jian Zhang, Ling Bing Kong, Dingyuan Tang
Summary: Differential densification was observed in the sintering of Ho:Y2O3 ceramics at low heating rates. Simulation results showed a small temperature difference between the surface and center area of the samples at a heating rate of 3 degrees C/min. Grain coarsening and rearrangement were more pronounced in the near-surface area during the initial and intermediate sintering stages. This led to a more uniform pore distribution and microstructure in the near-surface area, accelerating pore elimination in the subsequent sintering stage. Particle rearrangement in the early sintering stage was identified as one of the main reasons for enhanced densification of the ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Chiharu Akatsuka, Tsuyoshi Honma, Ralf Mueller, Stefan Reinsch, Satoshi Tanaka, Takayuki Komatsu
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Article
Physics, Applied
Yutaka Doshida, Hideki Tamura, Satoshi Tanaka
JAPANESE JOURNAL OF APPLIED PHYSICS
(2019)
Article
Materials Science, Ceramics
Shoko Baba, Alexandre Maitre, Nicolas Pradeilles, Guy Antou, Nobuo Saito, Satoshi Tanaka
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2020)
Article
Multidisciplinary Sciences
Gaku Okuma, Shuhei Watanabe, Kan Shinobe, Norimasa Nishiyama, Akihisa Takeuchi, Kentaro Uesugi, Satoshi Tanaka, Fumihiro Wakai
SCIENTIFIC REPORTS
(2019)
Article
Physics, Applied
Yutaka Doshida, Hideki Tamura, Satoshi Tanaka, Tomohiro Harada, Hiroyuki Shimizu
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Ceramics
Shoko Baba, Satoshi Tanaka
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Ceramics
Yuuki Ono, Satoshi Tanaka, Tsuyoshi Honma, Tomohiro Harada, Hiroyuki Shimizu, Yutaka Doshida
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2020)
Article
Materials Science, Ceramics
Satoshi Tanaka, Shoko Baba, Toshinari Watanabe, Masahito Uchida
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Ceramics
Gaku Okuma, Satoshi Tanaka, Fumihiro Wakai
Summary: X-ray microtomography was used to study the microstructure evolution in 3D, revealing the relationship between the topology of pore networks and characteristic length with densification. The increase in characteristic length with decreasing genus in the intermediate stage results in domain coarsening. This coarsening is a natural consequence of pore evolution in viscous sintering, leading to a decrease in total surface area due to topological transformations.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Gaku Okuma, Toshio Osada, Haruki Minagawa, Yutaro Arai, Ryo Inoue, Hideki Kakisawa, Kazuya Shimoda, Akihisa Takeuchi, Masayuki Uesugi, Satoshi Tanaka, Fumihiro Wakai
Summary: In this study, the complex domain structures and heterogeneous distribution of residual pores in powder compacts during uniaxial die compaction and sintering were characterized using synchrotron X-ray multiscale-CT and scanning electron microscopy (SEM). The results revealed the formation mechanism of the non-uniform distribution of fine residual pores and provided new possibilities for optimizing ceramic processing.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Yuuki Ono, Tomohiro Harada, Hiroyuki Shimizu, Yutaka Doshida, Tsuyoshi Honma, Satoshi Tanaka
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2019)
Article
Materials Science, Ceramics
Cong Wang, Weiwei Chen, Anze Shui, Jianqiao Li, Wei Tian, Juan Ma, Bin Du, Satoshi Tanaka
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2019)
Article
Materials Science, Ceramics
Takuma Takahashi, Junichi Tatami, Hiromi Nakano, Satoshi Tanaka
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Gaku Okuma, Fumihiro Wakai, Satoshi Tanaka, Tsuyoshi Hondo, Jesus Gonzalez-Julian, Olivier Guillon
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Materials Science, Ceramics
Satoshi Tanaka, Keisuke Sano, Tomohiro Harada, Hiroyuki Shimizu, Yutaka Doshida
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2018)
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)