Article
Materials Science, Ceramics
Yijing Sun, Lijun Zheng, Shaowei Zhang, Xudong Luo, Feng Liu, Yong Li
Summary: Al2O3-SiC composite powder was successfully synthesized using a novel molten-salt-assisted aluminum/carbothermal reduction method. The addition of the molten salt played an important role in the formation of SiC whiskers. The optimal synthesis condition was achieved at 1573K for 4 hours.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Peng Wei, Lei Zhuang, Hulei Yu, Yexia Qin, Yanhui Chu
Summary: This study reports the synthesis of ultrafine powders of high-entropy rare-earth silicates (HERESs) via a simple molten salt method. The results show successful synthesis of high-entropy rare-earth disilicates (HEREDs) and monosilicates (HEREMs) with uniform elemental distribution.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Benjun Cheng, Can Yao, Juntong Huang, Cheng Liu, Shaowei Zhang, Hesong Li
Summary: A homogeneous and high-purity titanium silicon carbon powder (Ti3SiC2) was successfully synthesized using an improved molten salt method at low temperatures. Multiple molten salts were found to be beneficial in facilitating the synthesis process, and the reaction temperature and excess silicon played crucial roles in the purity and dispersion of the final powder.
ADVANCES IN APPLIED CERAMICS
(2022)
Article
Materials Science, Ceramics
C. Koop-Santa, A. Sanchez-Martinez, Edgar R. Lopez-Mena, Jesus L. A. Ponce-Ruiz, E. Orozco-Guareno, O. Ceballos-Sanchez
Summary: Pure manganese titanate powder was successfully synthesized via the molten salt method and characterized using various techniques such as XRD, UV-Vis spectroscopy, and first-principles calculations. The study provided valuable insights into the structural and property characteristics of MnTiO3, laying a solid foundation for its further applications.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Pao Yang, Hongbin Qi, Xiuli Fu, Zhijian Peng
Summary: The molten-salt synthesis method significantly reduces the synthesis temperature of Ni0.5Zn0.5Fe2O4 and increases its sintering activity, but may result in abnormal grain growth during sintering. The duration of calcination is a key factor affecting the activity and crystallization of the powders.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Baoqiang Li, Chang Liu, Yuanjiang Dong, Zongxian Yang, Huacheng Jin, Fei Ding, Liuyang Bai, Junmei Fan, Chun Wang, Fangli Yuan
Summary: Spherical (Zr.2Ti.2Ta.2Nb.2Mo.2)B-2 powders with uniform particle size distribution were prepared using a combination of spray-drying process and thermal plasma sintering technology. The powders were synthesized via borothermal reduction process and further processed into spherical granules. RF induction thermal plasma sintering increased the apparent density of the powders. These powders are in potential demand for additive manufacturing techniques and may guide the preparation of other spherical high-entropy diboride powders.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuankun Tu, Chuanhua Li, Yubao Shi, Yu Jiang, Wei Xiao, Shenghua Zhu, Peng Lv, Xuemin Yan
Summary: The paper introduces a low-temperature molten salt template method to synthesize a composite of CoS2 and nitrogen-doped carbon (CoS2/NC). The as-synthesized CoS2/NC composite demonstrates outstanding bifunctional catalytic activity in alkaline electrolytes.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Ceramics
Wendong Tan, Xiaoshuang Guo, Yiming She, Hongshan Li, Yuan Lei, Jiegang You, Xiaofang Zhang, Xudong Luo
Summary: This study investigated the synthesis of hercynite using the molten salt method with different molten salt temperatures and holding times. The results showed that the content of hercynite increased with higher temperatures and longer holding times, and the optimal conditions were determined. Additionally, the morphology of the synthesized hercynite powder was independent of the raw material, indicating the dominance of a dissolution-precipitation mechanism in the synthesis process.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Keke Guan, Wen Lei, Honghong Wang, Xuefeng Liu, Jin Luo, Jin Luo, Quanli Jia, Haijun Zhang, Shaowei Zhang
Summary: In this study, high purity Ti3AlC2 powders were successfully prepared using microwave-assisted molten salt method. The synthesis temperature and holding time of highly pure Ti3AlC2 powders were relatively milder compared to traditional methods. This efficient synthesis approach can be attributed to the synergistic effect of molten salt and microwave heating. The findings have significant implications for the rapid synthesis of high purity Ti3AlC2 powders.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Kuo Zeng, Xinyi Yang, Yingpu Xie, Haiping Yang, Jun Li, Dian Zhong, Hongyang Zuo, Ange Nzihou, YouJian Zhu, Hanping Chen
Summary: This study investigated the use of variant molten salts in biomass pyrolysis, finding that carbonates can significantly improve the gas composition and quality of biomass pyrolysis products, as well as enhance the quality of bio-oil and char produced. The results also showed a shifting in molten salt composition and interaction between carbonates and char during biomass pyrolysis, affecting the yield of CO in pyrolysis gas and limiting the sustainable use of the system.
Article
Materials Science, Ceramics
Donghai Ding, Bing Bai, Guoqing Xiao, Jiyuan Luo, Xiaochuan Chong
Summary: A novel electromagnetic wave absorber was prepared using combustion synthesis method, with NaCl significantly reducing the grain size of B4C powders. The N-6 sample with nanoscale B4C powders exhibited optimal dielectric and EMW absorbing properties.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Mariano D. Susman, Sivadinarayana Chinta, Jeffrey D. Rimer
Summary: This study demonstrates the importance of molten intermediates in solid solution synthesis and reveals the different pathways followed in nitrate and chloride salt media. The judicious selection of ions in the molten salt synthesis plays a major role in achieving well-defined crystals with high-index facets. The control of metal oxide structure and surface properties is crucial in catalysis applications.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Zhiqun Luo, Fan Li, Qi Zhu, Xudong Sun, Ji-Guang Li
Summary: In this study, nanocrystalline La2O2S:Pr3+ powder was successfully synthesized using a simple and environmentally friendly method. The synthesized powder exhibited strong luminescence at 508 nm and retained a certain level of luminescence intensity at high temperatures, demonstrating its potential applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Cheng Chang, Jiguo Tu, Yunfei Chen, Mingyong Wang, Shuqiang Jiao
Summary: A low-temperature electro-deoxidation strategy for solid SeO2 was proposed for the first time, and the process and products were analyzed in detail. This has significant implications for short-process and green metallurgy of other characteristic scattered metals.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Sanzhao Song, Jian Sun, Jing Zhou, Chengzhi Guan, Zhiwei Hu, Ting-Shan Chan, Xian-Long Du, Xiao Lin, Jun Hu, Linjuan Zhang, Jian-Qiang Wang
Summary: Molten salt synthesis is effective in preparing multicationic oxides at lower temperatures, allowing for the formation of crystalline solids like perovskites. Key factors influencing the process include the type of reaction medium, calcination temperature, ratio of salt, and reaction time. Additionally, the formation of LaOCl as an intermediate plays a crucial role in the phase-selective synthesis of perovskite LCO.
Article
Chemistry, Multidisciplinary
Xinliang Li, Na Li, Zhaodong Huang, Ze Chen, Yuwei Zhao, Guojin Liang, Qi Yang, Mian Li, Qing Huang, Binbin Dong, Jun Fan, Chunyi Zhi
Summary: This study introduces an advanced aqueous zinc redox battery by incorporating an electrochemically active parasite Br-2 into the Ti3C2Tx MXene host. The battery delivers efficient output capability in the high-voltage region and shows excellent cycling performance at low temperatures.
Article
Materials Science, Ceramics
Teng Yu, Heejin Kwon, Linkun Shi, Xiaobing Zhou, Dang-Hyok Yoon, Peter Tatarko, Xin Xu, Zhengren Huang, Qing Huang
Summary: Monolithic SiC was successfully joined using a SiC whisker-reinforced Ti3SiC2 composite filler via electric field-assisted sintering technique, achieving a joint strength higher than 250 MPa. Optimization of process parameters and the addition of up to 15 wt. % SiC whiskers improved joint strength, but a lower joint strength was observed with 20 wt. % SiC whisker addition due to thermal expansion mismatch.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Ke Chen, Xudong Wang, Jianning Zhang, Haoming Ding, Youbing Li, Yujie Song, Fangfang Ge, Xiaobing Zhou, Shiyu Du, Qing Huang
Summary: MAX phases are a family of damage-tolerant structural materials used in the nuclear energy industry. Ti2SC phase has shown good corrosion resistance to concentrated hydrofluoric acid, potentially making it suitable for use in molten salt reactors.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Lihua Zhao, Tianhao Li, Bijie Wang, Ke Chen, Xiao Hu, Ming Liu, Liu He, Qing Huang, Yujie Song
Summary: Poly(siloxane-carborane)s are polymeric materials with good thermal stability and anti-oxidation properties, which can be used to protect carbon fiber and carbon foam from damage in harsh environments.
Article
Nanoscience & Nanotechnology
Xiaozhen Ma, Ke Chen, Shuqi Li, Pitchaimari Gnanasekar, Yinyan Zhong, Yupeng An, Qing Luo, Qing Huang, Jin Zhu, Jing Chen, Ning Yan
Summary: In this study, MXene nanosheets were used to modify a lignin-based polyurethane foam, creating an adsorbent with high photothermal conversion performance for heavy oil recovery. The adsorbent showed high solar absorption rate and thermal conductivity, allowing it to adsorb a large amount of heavy crude oil in a short time. Moreover, the adsorbent containing MXene nanosheets can easily degrade in alkaline solutions, leaving harmless titanium dioxide nanoparticles as residues. These bio-based adsorbents exhibit excellent performance in rapid heavy oil removal, degradability, and environmental friendliness, offering a promising solution for cleaning up high-viscous crude oil spills.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Ceramics
Jie Xu, Xiaobing Zhou, Shunrui Zou, Lu Chen, Peter Tatarko, Jian-Qing Dai, Zhengren Huang, Qing Huang
Summary: In this study, a novel Pr3Si2C2 additive was prepared and successfully applied in the liquid-phase sintering of SiC ceramics. It was found that an appropriate amount of additive could improve the sintering rate and thermal conductivity of SiC, while excessive additive could decrease the thermal conductivity due to increased interfacial thermal resistance. SiC materials with optimized amount of additive and grain boundary structure exhibited the highest thermal conductivity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Junhui Sun, Ziwen Cheng, Qing Huang, Heming He, Joseph S. Francisco, Shiyu Du
Summary: Based on the intrinsic characteristics of layered materials, this study introduces a universal principle for the production of intact monolayers through layer-by-layer exfoliation via positive charge doping. The universality of this exfoliation method stems from the common electronic structures of layered materials. This strategy opens the possibility of producing diverse high-quality two-dimensional monolayers on a large scale with minimal defects.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Ceramics
Yuanjie Wang, Jian Gong, Xueliang Pei, Liu He, Zhengren Huang, Qing Huang
Summary: In this study, an SiC ceramic precursor, VE-LHBPCS, was designed and synthesized. The ceramic precursor was cross-linked via thiol-ene click reaction. The results showed that the VE-LHBPCS mixture could be cured within a short period of time, forming a high yield ceramic at high temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Tianhao Li, Wei Zhang, Liantai Duan, Ke Chen, Qing Huang, Yinsheng Li, Zhengren Huang, Liu He, Yujie Song
Summary: Trimethylsilyl-substituted polysilazanes were synthesized and utilized to fabricate high-purity stoichiometric Si3N4 ceramics through pyrolysis process. The presence of trimethylsilyl groups enhanced the stability of polysilazanes and facilitated their escape during pyrolysis, leading to reduced oxygen and carbon content in the final polymer-derived Si3N4. The resulting Si3N4 ceramics exhibited amorphous structure up to 1400 degrees C and transformed into alpha-Si3N4 at 1500 degrees C. The synergistic effect of low oxygen and carbon content contributed to the high stability of the amorphous Si3N4 ceramics at high temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Xiaojing Bai, Yuanbin Xue, Kan Luo, Ke Chen, Qing Huang, Xian-Hu Zha, Shiyu Du
Summary: As a large family of two-dimensional materials, MXenes have attracted intensive attention in recent years. In this study, the researchers expanded the M elements of MXenes to the lanthanide series and investigated the electronic properties of lanthanide-based MXenes. The results suggest that lanthanide-based MXenes could have potential applications in spintronics and information storage, among others.
Article
Chemistry, Physical
Shuairu Zhu, Youbing Li, Deyu Liu, Qing Huang, Yongbo Kuang
Summary: This study proposes a potentially generalizable strategy for constructing more compact, stable, and highly active transition metal-based composite materials by alloying transition metals with carbon elements to form high-activity sites.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Liantai Duan, Tianhao Li, Yangzhong Zhao, Yanpei Dang, Jianning Zhang, Ke Chen, Jian Xu, Qing Huang, Chuanzhuang Zhao, Yujie Song
Summary: The high-temperature durability of SiBCN ceramics is significantly influenced by boron concentration and synthesis methods. Carborane-substituted polyborosilazanes were synthesized with a broad range of boron content up to 40 wt %, which improved the thermal stability and functional properties of the ceramics. The introduction of boron inhibited Si3N4 crystallization and increased the crystallization temperature of SiC, while B4C appeared as a new crystalline phase.
INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Chongwen Yu, Tianhao Li, Xiao Hu, Ming Liu, Qing Huang, Liu He, Yujie Song
Summary: High-performance polymers (HPPs) have good thermal and mechanical properties and are widely used in various fields. However, traditional highly cross-linked HPPs tend to fail at high temperatures due to structural defects. This study introduced a new design strategy using a cyclosiloxane hybrid polymer (CHP) to compensate for the structural defects and improve the performance of HPPs at high temperatures.
Article
Chemistry, Physical
Lu Chen, Youbing Li, Kun Liang, Ke Chen, Mian Li, Shiyu Du, Zhifang Chai, Michael Naguib, Qing Huang
Summary: This study reports the design and synthesis of Ga-containing medium/high entropy MAX phases and their corresponding MXenes. Ga atomic layer etching is carried out using a Lewis acid molten salt (CuCl2). The as-prepared (Ti1/4V1/4Nb1/4Ta1/4)(2)CTx exhibits a Li+ specific capacity of approximately 400 mAh g(-1). For (Ti1/5V1/5Nb1/5Ta1/5Mo1/5)(2)CTx, a specific capacity of 302 mAh g(-1) is achieved after 300 cycles, and high cycling stability is observed at high current densities. This work is of great significance for expanding the family members of MXenes with tunable chemistries and structures.
Article
Chemistry, Physical
Lu Chen, Youbing Li, Ke Chen, Xiaojing Bai, Mian Li, Shiyu Du, Zhifang Chai, Qing Huang
Summary: Entropy stabilization is an effective method to design and explore MAX phases with outstanding properties. In this study, medium-/high-entropy MAX phases with different A elements were synthesized and their crystal structures were verified. The electrical conductivity and charge carrier mobility of these MAX phases are lower than previously reported MAX phases. The electron contribution to thermal conductivity decreases with temperature, while the phonon contribution increases. These findings suggest a composition design route for discovering new MAX phases and tuning their properties.
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)
