Results 31 to 40 of about 27,104 (282)

Dual-phase high-entropy ultra-high temperature ceramics

Journal of the European Ceramic Society, 2020
A series of dual-phase high-entropy ultrahigh temperature ceramics (DPHE-UHTCs) are fabricated starting from N binary borides and (5-N) binary carbides powders. >~99% relative densities have been achieved with virtually no native oxides. These DPHE-UHTCs consist of a hexagonal high-entropy boride (HEB) phase and a cubic high-entropy carbide (HEC ...
Mingde Qin, Joshua Gild, Chongze Hu, Haoren Wang, Md Shafkat Bin Hoque, Jeffrey L. Braun, Tyler J. Harrington, Patrick E. Hopkins, Kenneth S. Vecchio, Jian Luo   +9 more
openaire   +3 more sources

Design and thermophysical properties of （Sm0.2Gd0.2Eu0.2Lu0.2Dy0.2）2Zr2O7 high entropy rare earth zirconic acid ceramic materials

Cailiao gongcheng
To improve the service temperature of high-temperature components in engines and search for high-temperature resistant and high thermal insulation thermal barrier coating materials to replace YSZ， a high entropy rare earth zirconate ceramic material is ...
ZHOU Shaoshuai, SHU Xiaoyong, CHANG Zhendong, XIE Min, MU Rende, CAI Yan   +5 more
doaj   +1 more source

Elastic models for the non-Arrhenius viscosity of glass-forming liquids [PDF]

, 2006
This paper first reviews the shoving model for the non-Arrhenius viscosity of viscous liquids. According to this model the main contribution to the activation energy of a flow event is the energy needed for molecules to shove aside the surrounding, an ...
Adam, Anderson, Angell, Bains, Barlow, Bielowka, Bueche, Christensen, Cicerone, Cohen, Diezemann, Doolittle, Douglas, Dyre, Dyre, Dyre, Dyre, Dyre, Dyre, Dyre, Dyre, Flynn, Fujara, Gemant, Goldstein, Hall, Heuer, Jeppe C. Dyre, Johari, Kauzmann, Keyes, Mooney, Nemilov, Ngai, Niels Boye Olsen, Novikov, Olsen, Roseveare, Sanditov, Scopigno, Starr, Stillinger, Stokes, Swallen, Tage Christensen, Tanaka, Tobolsky, Varotsos, Wang, Zener   +49 more
core   +2 more sources

Dielectric and ferroelectric characteristics of Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics

Journal of Materiomics, 2023
Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics were prepared by a standard solid state reaction process, and the dielectric and ferroelectric characteristics were investigated together with the structures.
Rui Hu Mi, Bu Hang Chen, Xiao Li Zhu, Xiang Ming Chen   +3 more
doaj   +1 more source

Research progress in high-entropy carbide ceramic materials

Cailiao gongcheng
In recent years， high-entropy ceramics have attracted extensive attention from scholars at home and abroad because of their superior properties to traditional ceramic materials and ability to meet the needs of extreme service environments better.
XIE Chenyi, LIU Rongjun, WANG Yanfei, LI Duan, MIAO Huaming   +4 more
doaj   +1 more source

Research status and prospects of high-entropy composite ceramics

Journal of Asian Ceramic Societies
With the continuous advancement of research in the field of high-entropy ceramic materials, high-entropy composite ceramics have attracted considerable attention from international scholars due to their unique properties and advantages derived from ...
Heng Zhao, Wenzhou Sun, Youjun Lu, Wuyang Song, Huan Liu, Maohui Li   +5 more
doaj   +1 more source

High‐entropy transparent fluoride laser ceramics

Journal of the American Ceramic Society, 2019
Abstract For the first time, a transparent high‐entropy fluoride laser ceramic has been prepared and characterized. X‐ray diffraction (XRD) analysis of a CeNdCaSrBaF 12 (CNCSBF) transparent ceramic consolidated by vacuum hot pressing (VHP) reveals that Ce
Xianqiang Chen, Yiquan Wu
openaire   +2 more sources

A review of the high-entropy ceramic materials for thermal barrier coatings: Design, synthesis, sintering and properties [PDF]

Processing and Application of Ceramics
Thermal barrier coatings are used as a surface technology for hot-end components of turbine engines, and the continuous development of aerospace technology puts higher requirements on ceramic materials for thermal barrier coatings. High-entropy ceramics,
Liu Jiahang, Wang Yiyong, Lu Zhe, Zhou Yanwen, Li Yan, Zhang Jing, Lyu Guanlin, Jung Yeon-Gil   +7 more
doaj   +1 more source

First-principles study, fabrication and characterization of (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic [PDF]

, 2019
The formation possibility of a new (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic (ZHC-1) was first analyzed by the first-principles calculations and thermodynamical analysis and then it was successfully fabricated by hot pressing sintering technique ...
Chu, Yanhui, Hao, Luyao, Nguyen, Manh Cuong, Wang, Cai-Zhuang, Wen, Tongqi, Ye, Beilin   +5 more
core   +2 more sources

Correlations between Elastic, Calorimetric, and Polar Properties of Ferroelectric PbSc0.5Ta0.5O3 (PST) [PDF]

, 2019
Calorimetric, elastic, and polar properties of ferrolectric lead scandium tantalate PbSc0.5Ta0.5O3 (PST) with 65% cation order have been investigated in the vicinity of the paraelectric-ferroelectric transition at Ttrans = 295K.
Ekhard K. H. Salje, Francisco Javier Romero, Gan Linyu, José-María Martín-Olalla, Levanyuk A., María Carmen Gallardo, Oktay Aktas, Salje E., Victorino Franco, Yumei Zhou   +9 more
core   +1 more source