Results 1 to 10 of about 13,215 (164)

Contributions of mechanical bonding and chemical bonding to high-temperature hermeticity of glass-to-metal compression seals

Materials & Design, 2021
The present work compares the contributions of mechanical bonding and chemical bonding to high-temperature hermeticity of glass-to-metal (GTM) compression seals and explores their temperature-dependent failure behaviors.
Kangjia Hu, Shenhou Li, Zhichun Fan, He Yan, Xuewei Liang, Yangyang Cai, Qianying Zhu, Yong Zhang   +7 more
doaj   +1 more source

The effect of reinforcement particle size on the mechanical and fracture properties of glass matrix composites

Heliyon, 2023
The strength and toughness of sealing glass are currently unable to meet increasingly severe application conditions, and composites are an effective way to solve this problem.
Yangyang Cai, Zheng Liu, Keqian Gong, Yong Zhang   +3 more
doaj   +1 more source

An extended computational approach for point-defect equilibria in semiconductor materials

npj Computational Materials, 2022
Concentrations of intrinsic and extrinsic point defects in crystalline materials with a bandgap are typically calculated in a constant-μ approach from defect formation energies based on density functional theory. In this work, calculations of thermal and
Takafumi Ogawa, Ayako Taguchi, Akihide Kuwabara   +2 more
doaj   +1 more source

Defect Engineering and Anisotropic Modulation of Ionic Transport in Perovskite Solid Electrolyte Li_xLa_(1−x)/3NbO₃

Molecules, 2021
Solid electrolytes, such as perovskite Li3xLa2/1−xTiO3, LixLa(1−x)/3NbO3 and garnet Li7La3Zr2O12 ceramic oxides, have attracted extensive attention in lithium-ion battery research due to their good chemical stability and the improvability of their ionic ...
Jinhua Hong, Shunsuke Kobayashi, Akihide Kuwabara, Yumi H. Ikuhara, Yasuyuki Fujiwara, Yuichi Ikuhara   +5 more
doaj   +1 more source

Abnormal thermal expansion coefficients in (Nd1−xDyx)2Zr2O7 pyrochlore: The effect of low-lying optical phonons

Journal of Advanced Ceramics, 2023
Chemical doping is a normal strategy to tune thermal expansion coefficient (TEC) of ceramics in engineering applications, but the resultant TEC values usually follow Vegard’s law, as doping does not modify the nature of chemical bonding in ceramics and ...
Zesheng Yang, Yi Li, Wei Pan, Chunlei Wan   +3 more
doaj   +1 more source

Thermal cycle stability of glass-to-metal seals with glass preforms produced via powder-metallurgy and casting-machining methods

Materials Research Express, 2023
In order to evaluate the influence of preform preparation processes on thermal cycle stability of glass-to-metal seals, this work embraced two different methods to produce the preform for seals.
Keqian Gong, Yangyang Cai, Zheng Liu, Yong Zhang   +3 more
doaj   +1 more source

Quantitative prediction of grain boundary thermal conductivities from local atomic environments

Nature Communications, 2020
Connecting grain boundary structures to macroscopic thermal behaviour is an important step in materials analysis and design. Here the authors develop a physical model combined with a machine-learning approach to accurately predict thermal conductivities ...
Susumu Fujii, Tatsuya Yokoi, Craig A. J. Fisher, Hiroki Moriwake, Masato Yoshiya   +4 more
doaj   +1 more source

Ultra-dense dislocations stabilized in high entropy oxide ceramics

Nature Communications, 2022
Dislocation engineering is important for designing structural materials. Here the authors demonstrate that a high-entropy oxide ceramic with a high density of edge dislocations can be stabilized by increasing the compositional complexity, resulting in ...
Yi Han, Xiangyang Liu, Qiqi Zhang, Muzhang Huang, Yi Li, Wei Pan, Peng-an Zong, Lieyang Li, Zesheng Yang, Yingjie Feng, Peng Zhang, Chunlei Wan   +11 more
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Tunnel elasticity enhancement effect of 3D submicron ceramics (Al2O3, TiO2, ZrO2) fiber on polydimethylsiloxane (PDMS)

Journal of Advanced Ceramics, 2021
Some polymers are flexible, foldable, and wearable. Structural—functional composite is fabricated by adding inorganic fillers with functional properties.
Yuxiu Hao, Junwei Xie, Bingqing Xu, Bingkun Hu, Yunpeng Zheng, Yang Shen   +5 more
doaj   +1 more source

Microscopic mechanism of biphasic interface relaxation in lithium iron phosphate after delithiation

Nature Communications, 2018
Improving the performance of Li-ion batteries relies on understanding charging/discharging mechanisms. Here the authors visualize the interfacial structure and composition of a partially delithiated lithium iron phosphate single crystal as a function of ...
Shunsuke Kobayashi, Akihide Kuwabara, Craig A. J. Fisher, Yoshio Ukyo, Yuichi Ikuhara   +4 more
doaj   +1 more source