Results 21 to 30 of about 27,104 (282)

Physical structure of P(VDF-TrFE)/barium titanate submicron composites [PDF]

open access: yes, 2011
Dynamic Dielectric Spectroscopy and Thermo Stimulated Current were used to investigate of the dielectric relaxation of hybrid Poly(vinylidene-fluoride-trifluoroethylene)/barium titanate 700 nm composites with 0–3 connectivity.
Capsal, Jean-Fabien   +3 more
core   +3 more sources

High-entropy perovskite ceramics: Advances in structure and properties [PDF]

open access: yesProcessing and Application of Ceramics
High-entropy ceramic materials usually refer to the multi-principal solid solution formed by 5 or more ceramic components. Due to its novel “high-entropy effect” and excellent performance, it has become one of the research hotspots in the field of ...
Ding Yiwen   +10 more
doaj   +1 more source

Direct measurement of electrocaloric effect in lead-free Ba(SnxTi1-x)O3 ceramics [PDF]

open access: yes, 2017
In this study, we report on investigation of the electrocaloric (EC) effect in lead-free Ba(SnxTi1-x)O3 (BSnT) ceramics with compositions in the range of 0.08 ≤ x ≤ 0.15 by the direct measurement method using a differential scanning calorimeter.
Dkhil, Brahim   +6 more
core   +3 more sources

High-entropy high-hardness metal carbides discovered by entropy descriptors [PDF]

open access: yes, 2018
High-entropy materials have attracted considerable interest due to the combination of useful properties and promising applications. Predicting their formation remains the major hindrance to the discovery of new systems.
Brenner, Donald W.   +8 more
core   +3 more sources

Expanded microchannel heat exchanger: design, fabrication and preliminary experimental test [PDF]

open access: yes, 2012
This paper first reviews non-traditional heat exchanger geometry, laser welding, practical issues with microchannel heat exchangers, and high effectiveness heat exchangers.
Brandemuehl, Michael J.   +3 more
core   +5 more sources

On the thermal and mechanical properties of Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O across the high-entropy to entropy-stabilized transition

open access: yesAPL Materials, 2022
As various property studies continue to emerge on high entropy and entropy-stabilized ceramics, we seek a further understanding of the property changes across the phase boundary between “high-entropy” and “entropy-stabilized” phases.
Christina M. Rost   +9 more
doaj   +1 more source

Superhard high-entropy AlB2-type diboride ceramics

open access: yesScripta Materialia, 2021
Hardness was measured for six different nominally pure and single-phase high-entropy diboride ceramics with the AlB structure that were produced by a two-step process. Most of the ceramics had relative densities greater than 99.5%. Vickers hardness average values ranged from 21.0 GPa to 25.4 GPa at a load of 9.81 N, while values increased to the range ...
Lun Feng   +3 more
openaire   +3 more sources

Phase structure tuned electrocaloric effect and pyroelectric energy harvesting performance of (Pb0.97La0.02)(Zr,Sn,Ti)O3 antiferroelectric thick films [PDF]

open access: yes, 2015
In present work, (100)-oriented (Pb0.97La0.02)(Zr0.95-xSnxTi0.05)O3 antiferroelectric thick films with x=0.08, 0.20 and 0.38, were successfully fabricated. These compositions are located in orthorhombic phase region, the morphotropic phase boundary (MPB),
Mitsui T., Qi Zhang, Xihong Hao, Ye Zhao
core   +1 more source

Topological frustration of artificial spin ice [PDF]

open access: yes, 2017
Frustrated systems, typically characterized by competing interactions that cannot all be simultaneously satisfied, display rich behaviours not found elsewhere in nature.
Cumings, John   +2 more
core   +2 more sources

Single-phase high-entropy intermetallic compounds (HEICs): bridging high-entropy alloys and ceramics

open access: yesScience Bulletin, 2019
High-entropy intermetallic compounds (HEICs) were fabricated by mechanical alloying and spark plasma sintering to fill a knowledge gap between the traditional high-entropy alloys (HEAs) and emerging high-entropy ceramics (HECs). Notably, several four- or five-component equimolar aluminides, such as the B2-phase (Fe1/5Co1/5Ni1/5Mn1/5Cu1/5)Al, have been ...
Zhou, Naixie   +5 more
openaire   +4 more sources

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