Results 71 to 80 of about 202,213 (313)

Effect of powder characteristics on the sinterability of hydroxyapatite powders

open access: yesJournal of Materials Science: Materials in Medicine, 2001
The effect of different sintering conditions on the sintered density and microstructure of two different hydroxyapatite (HA) powders was examined. The powder characteristics of a laboratory synthesized HA powder (Lab HA) were low crystallinity, a bimodal particle size distribution, a median particle size of 22 microm and a high specific surface area ...
I R, Gibson   +3 more
openaire   +2 more sources

An investigation of the parameters effecting the agglomerate size of a PZT ceramic powder prepared with a sol-gel technique. [PDF]

open access: yes, 2007
This paper describes the production of Pb1.0Zr0.9Ti0.1O3 ceramic powder, by using metal organic precursors as starting materials and a polyvinylpyrrolidone (PVP) as an agglomeration control agent.
Alcock, Jeffrey R.   +2 more
core   +1 more source

Rehydration of food powders: interplay between physical properties and process conditions [PDF]

open access: yes, 2020
Dehydrated food powders with poor dissolution or dispersion can dramatically compromise food processing, with consequences for the final product quality and consumer experience.
Ramaioli, M., Ong, X.Y., Taylor, S.E.
core   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

Insights into Stability and Selective Agglomeration in Binary Mixtures of Colloids: A Study on Gold Nanoparticles and Ultra-Small Quantum Dots

open access: yesPowders
Controlling the stability of colloidal nanoparticles in multicomponent systems is crucial for advancing formulations and separation processes. This study investigates the selective agglomeration approach for binary colloidal mixtures, providing both ...
Azita Rezvani   +4 more
doaj   +1 more source

On a Powder Consolidation Problem [PDF]

open access: yesSIAM Journal on Applied Mathematics, 2001
The problem of the consolidation of an aerated fine powder under gravity is investigated in this paper. An appropriate mathematical model is proposed. This model consists of a system of parabolic partial differential equations, an ordinary differential equation and an integral equation determining a free boundary corresponding to the height of powder ...
C. T. Kelley   +3 more
openaire   +1 more source

Synthesis of silica powders by pressured carbonation

open access: yes, 2009
A method was proposed for the preparation of silica powders using inexpensive material of sodium silicate (Na(2)SiO(3)) and carbon dioxide (CO(2)) by pressured carbonation, in which carbon dioxide acted as a precipitating reagent. Microstructure and size
Wang, X. Y.   +7 more
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

In Situ Tracking of Nanoparticles During Electrophoresis in Hydrogels Using a Fiber-Based UV-Vis System

open access: yesPowders
Gel electrophoresis is a powerful method for the separation of nanoparticulate suspensions into several fractions with distinct particle properties. To monitor particle migration through the three-dimensional net structure of the gel and gain insights ...
Matthäus Barasinski   +3 more
doaj   +1 more source

The effect of precursor composition and sintering additives on the formation of ß-sialon from Al, Si and Al2O3 powders

open access: yes, 2011
A study was performed to investigate the effect of increasing the Al or Al2O3 precursor content, above the stoichiometric amount, on the formation of β-sialon by pressureless sintering of Al, Si and Al2O3 powders in flowing nitrogen gas.
Ewing, Helen, Yang, S.
core   +1 more source

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