Results 31 to 40 of about 1,017,313 (318)

Effect of Heat Treatment on the Structural-Phase State and Properties of a Multilayer Co-Cr-Al-Y Coating

open access: yesCrystals, 2022
The article describes the effect of heat treatment on the structural-phase state and properties of a multilayer Cr-Al-Co-Y coating obtained by magnetron sputtering. Heat treatment was carried out at 400, 800 and 1000 °C.
Mazhyn Skakov   +6 more
doaj   +1 more source

Chemical composition of ambient aerosol, ice residues and cloud droplet residues in mixed-phase clouds: single particle analysis during the Cloud and Aerosol Characterization Experiment (CLACE 6) [PDF]

open access: yes, 2009
Two different single particle mass spectrometers were operated in parallel at the Swiss High Alpine Research Station Jungfraujoch (JFJ, 3580 m a.s.l.) during the Cloud and Aerosol Characterization Experiment (CLACE 6) in February and March 2007.
Cziczo, Daniel J.   +26 more
core   +1 more source

Symmetric phase-alternating composite pulses [PDF]

open access: yesJournal of Magnetic Resonance (1969), 1987
Abstract We derive sequences of new composite pulses that can provide constant rotations of arbitrary flip angle in the presence of large resonance offset effects. These symmetric sequences use only 180° phase shifts, and have the same symmetry properties as a single radiofrequency pulse.
Shaka, A.J., Pines, A.
openaire   +2 more sources

Comprehensive Analysis of Microstructure and Hot Deformation Behavior of Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si Alloy

open access: yesMetals, 2023
Low sensitivity to hot cracking is very important not only for casting but also for ingots of wrought alloys. Doping of Al-Cu-(Mg) alloys by eutectic forming elements provides an increasing resistance to hot cracking susceptibility, but it also leads to ...
Sayed M. Amer   +6 more
doaj   +1 more source

Computer-Controlled Detonation Spraying: Flexible Control of the Coating Chemistry and Microstructure

open access: yesMetals, 2019
This article is a focused review aimed to describe the potential of the computer-controlled detonation spraying (CCDS) for producing and designing coatings with variable chemical and phase compositions and microstructure and promising properties.
Vladimir Yu. Ulianitsky   +3 more
doaj   +1 more source

On the Question of the Complex Processing of Pyrite Cinders

open access: yesInorganics, 2023
A complex processing variant for pyrite cinders, i.e., the technogenic waste generated in the production of sulfuric acid, was proposed. This method provided preliminary chemical activation of the initial raw materials that comprised thermal treatment ...
Bagdaulet Kenzhaliyev   +5 more
doaj   +1 more source

Properties of the Cement, Slag and Fly Ash Mixture Composition Corresponding to CEM II/C-M and CEM VI

open access: yesMaterials Proceedings, 2023
In the study, cement mixtures containing granulated blast furnace slag (GBFS) and siliceous fly ash (SFA) were tested, including those corresponding to special cements according to the PN-B-19707: 2013 standard.
Ewelina Tkaczewska, Grzegorz Malata
doaj   +1 more source

Wet Ball Milling Applied to Production of Composites and Coatings Based on Ti, W, and Nb Carbides

open access: yesPowders, 2023
The paper demonstrates the potential of wet ball milling of metals for the synthesis of various carbides and carbohydrides. The work reports on multicomponent carbides formed in Ti-(Cu/Fe/Si)-C, W-Fe-C, and Nb-(Cu/Fe/Si/Al)-C systems, as well as ...
Marina Eryomina, Svetlana Lomayeva
doaj   +1 more source

Phase separation in mullite-composition glass

open access: yesScientific Reports, 2022
AbstractAluminosilicates (AS) are ubiquitous in ceramics, geology, and planetary science, and their glassy forms underpin vital technologies used in displays, waveguides, and lasers. In spite of this, the nonequilibrium behavior of the prototypical AS compound, mullite (40SiO2-60Al2O3, or AS60), is not well understood.
Stephen K. Wilke   +7 more
openaire   +3 more sources

Evolution of Phase Transformation on Microwave Dielectric Properties of BaSixO1+2x Ceramics and Their Temperature-Stable LTCC Materials

open access: yesCrystals, 2023
BaSixO1+2x (1.61 ≤ x ≤ 1.90) and LiF-doped BaSi1.63O4.26 ceramics were prepared by using a traditional solid-state method at the optimal sintering temperatures. The evolution of phase compositions of BaSixO1+2x (1.61 ≤ x ≤ 1.9) ceramics was revealed. The
Tailai Wen   +9 more
doaj   +1 more source

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