Results 61 to 70 of about 147,221 (233)

Development of high Tc (greater than 110K) Bi, Tl and Y-based materials as superconducting circuit elements [PDF]

open access: yes
This report is presented in two parts. Part 1 deals primarily with Bi-based materials and a small amount of work on a Y-based composition while Part 2 covers work on Tl-based materials.
Gilmour, Phillip   +3 more
core   +1 more source

Method of producing refractory bodies having controlled porosity Patent [PDF]

open access: yes, 1970
Production of refractory bodies with controlled porosity by pressing and heating mixtures of refractory and inert metal ...
Todd, H. H.
core   +1 more source

Multi‐Ion Doping Controlled CEI Formation in Structurally‐Stable High‐Energy Monoclinic‐Phase NASICON Cathodes for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The graphical abstract illustrates the synthesis pathway, morphological feature, and thermodynamic feasibility of entropy‐engineered NASICON cathodes for sodium‐ion batteries. Abstract Overcoming the energy density limitations of sodium‐ion batteries (NIBs) requires innovative strategies to optimize cathode materials.
Sharad Dnyanu Pinjari   +9 more
wiley   +1 more source

High‐Entropy Perovskite Nanofibers for Bifunctional Air Electrodes in Reversible Protonic Ceramic Electrochemical Cells

open access: yesAdvanced Functional Materials, EarlyView.
High‐entropy perovskite nanofibers serve as robust and active bifunctional air electrodes in reversible protonic ceramic electrochemical cells. Their compositional complexity stabilizes the lattice, enriches oxygen vacancies, and accelerates surface exchange.
Hyeonggeun Kim   +4 more
wiley   +1 more source

Low temperature sintering additives for silicon nitride

open access: yes, 2003
Pressureless sintering of Si3N4 with two new additives based on the Li2O-Y2O3 system (LiYO2) and on the Li2O-Al2O3-SiO2 system (LiAlSiO4) were investigated in this study. Experiments were conducted in the areas of powder processing, sintering optimization, phase transformation characterization and microstructural development.
openaire   +3 more sources

Sintering of Alumina-Reinforced Ceramics Using Low-Temperature Sintering Additive

open access: yesCrystals
Reinforced alumina ceramics are renowned for their high hardness and strength among common oxide ceramics. However, high-temperature or high-pressure treatment is necessary for maximizing values of strength and hardness. In this paper, liquid-phase-assisted pressureless sintering of alumina reinforced with zirconia was studied.
Yuriy Alexandrovich Garanin   +2 more
openaire   +1 more source

Electrochemical Formation of BiVO4/BiPO4 Photoanodes for Enhanced Selectivity toward H2O2 Generation

open access: yesAdvanced Functional Materials, EarlyView.
In acidic KPi, V dissolves from the BiVO4 lattice, while adsorbed phosphate reacts with the electrode under an external bias, forming a BiPO4 surface layer. This BiPO4 layer exhibits stronger bicarbonate adsorption, redirecting the water oxidation pathway toward two‐electron H2O2 production.
Kaijian Zhu   +12 more
wiley   +1 more source

Effect of sintering temperature and heat treatment on electrical properties of indium oxide based ceramics [PDF]

open access: yes, 2008
Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear.
Bondarchuk, AN   +5 more
core  

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

open access: yesAdvanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka   +3 more
wiley   +1 more source

Experimental analysis and numerical simulation of sintered micro-fluidic [PDF]

open access: yes, 2017
This paper investigates the use of numerical simulations to describe solid state diffusion of a sintering stage during a Powder Hot Embossing (PHE) process for micro-fluidic components.
Barriere, T., Gelin, J-C., Sahli, M.
core  

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