Results 121 to 130 of about 27,124 (303)

Multi-scale ceramic TiC solves the strength-plasticity equilibrium problem of high entropy alloy

Materials & Design
High entropy alloys (HEAs) with single FCC structure exhibits unique structure and properties. However, lack of strength hinds the engineering application ability seriously. Therefore, it is urgent to propose effective methods and theories to enhance the
Hao Qi, Siruo Zhang, Chenghao Liu, Rongde Li, Shulin Dong, Guanglong Li, Yingdong Qu   +6 more
doaj   +1 more source

DEFECT MIGRATION IN SOLIDS - MICROSCOPIC CALCULATION OF DIFFUSION RATES [PDF]

, 1989
Diffusion includes some of the commonest processes on an atomic scale, in which uncorrelated atomic jumps bring about changes in solids. The many predictions of activation energies characterising the temperature dependence of diffusion have high accuracy
STONEHAM, AM
core  

The ground state properties of the mixed-valence cobaltites Nd$_{0.7}$Sr$_{0.3}$CoO$_3$, Nd$_{0.7}$Ca$_{0.3}$CoO$_3$ and Pr$_{0.7}$Ca$_{0.3}$CoO$_3$

, 2013
The electric, magnetic, and thermal properties of three perovskite cobaltites with the same 30% hole doping and ferromagnetic ground state were investigated down to very low temperatures.
Fujishiro, H., Hejtmanek, J., Jirak, Z., Knizek, K., Marysko, M., Naito, T., Novak, P., Santava, E.   +7 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

High‐Entropy La‐(Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3 Ceramic with Ultrastable Dielectric Performance within 327–689 K and up to 7 GPa

Advanced Electronic Materials
To meet the needs of energy storage under high temperature and high pressure, a high‐entropy relaxor ferroelectric ceramic, La‐modified (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3 is prepared, which has excellent thermal and mechanical stability.
Jie Wu, Jian Guo, Yifeng Ren, Yanping Yang, Ziyou Zhang, Hongliang Dong, Shan‐Tao Zhang, Zhiqiang Chen, Yu Deng   +8 more
doaj   +1 more source

From high-entropy ceramics to compositionally complex ceramics and beyond

Journal of Materiomics
Over the past decade, the field of high-entropy ceramics (HECs) has expanded rapidly to encompass a broad range of oxides, borides, silicides, and other ceramic solid solutions.
Jian Luo
doaj   +1 more source

Gibbs free energy of reactions involving SiC, Si3N4, H2, and H2O as a function of temperature and pressure [PDF]

Silicon carbide and silicon nitride are considered for application as structural materials and coating in advanced propulsion systems including nuclear thermal.
Isham, M. A.
core   +1 more source

Pixelation‐Free, Monolithic Iontronic Pressure Sensors Enabling Large‐Area Simultaneous Pressure and Position Recognition via Machine Learning

Advanced Functional Materials, EarlyView.
A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim, Junseo Lee, Kwang‐Hun Choi, Seongil Im, Jae Hong Kim, Changsoon Choi, Junghwan Byun, Changhwan Shin, Ho Won Jang, Hyunsu Ju, Jung Ah Lim   +10 more
wiley   +1 more source

Research Progress of High Entropy Ceramic Materials

Research and Application of Materials Science
High-entropy materials (HEMs) have better mechanical, thermal, and electrical properties than traditional materials due to their special "high entropy effect". They can also adjust the performance of high entropy ceramics by adjusting the proportion of raw materials, and have broad application prospects in many fields. This article provides a review of
Song WU, Shikai LIU, Jialin WANG, Bibo HAN, Shaoyi SHEN, Zhigang YU, Zhaobo ZHANG, Xinhua ZHENG   +7 more
openaire   +1 more source

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

Advanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse, Yudai Kaneko, Ryohei Fujita, Tatsuhiro Horii, Daishi Shiojiri, Yuta Ozawa, Kyohei Nagatake, Tamami Takano, Yutaka Isoda, Aoi Koishikawa, Takashi Goto, Ai Ueno, Shoji Maruo, Kazuhide Ueno, Toshinori Fujie, Hosei Nagano, Hiroki Ota   +16 more
wiley   +1 more source