Results 31 to 40 of about 646,209 (304)

Volume Fraction Dependent Morphological Transition of Silica Particles Derived from Sodium Silicate

open access: yesInternational Journal of Technology, 2019
The volume fraction dependent morphological transition of droplets during the evaporation of colloidal silica solution was investigated using the spray-drying method.
Lailatul Qomariyah   +4 more
doaj   +1 more source

Obstructed Diffusion in Silica Colloidal Crystals [PDF]

open access: yesThe Journal of Physical Chemistry A, 2013
The hindered diffusion in silica colloidal crystals was studied experimentally, both by fluorescence recovery after photobleaching and by measurement of ionic conductivity. Particle size was varied to include 120, 220, 470, and 1300 nm, and the porosities were determined by flow measurements.
Benjamin J, Rogers, Mary J, Wirth
openaire   +2 more sources

Anisotropic deformation of colloidal particles under 4 MeV Cu ions irradiation

open access: yesMaterials Research Express, 2022
Anisotropic deformation of colloidal particles was investigated under ion irradiation with 4 MeV Cu ions. In this study, 0.5 μ m-diameter colloidal silica particles, 0.5 μ m-diameter Au-silica core–shell particles, and 15 nm-diameter Au colloids ...
E A Dawi, E Mustafa, T Siahaan
doaj   +1 more source

High performance cement composites with colloidal nano-silica

open access: yesConstruction and Building Materials, 2019
Recent studies have demonstrated the advantages of using nano-silica in building materials such as concrete due to its nano-filler effect as well as the pozzolanic reaction.
Hongjian Du, S. Pang
semanticscholar   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process

open access: yesUltrasonics Sonochemistry
The waterglass or St o¨ ber method is commonly used to synthesize spherical colloidal silica; however, these methods have some disadvantages, such as complicated processes for the removal of sodium ions and expensive and energy-consuming raw materials ...
Ren Zushi   +3 more
doaj   +1 more source

A silica/epoxy resin nanocomposite exhibiting high thermal stability and low thermal expansion based on the uniform dispersion of hydrophilic colloidal silica nanospheres

open access: yesPolymers and Polymer Composites, 2023
The present study fabricated high-performance silica/epoxy resin nanocomposites having a low coefficient of linear thermal expansion (CTE) and a high glass transition temperature ( T g ).
Mitsuru Tanahashi, Kazuma Hirota
doaj   +1 more source

Stability of colloidal silica

open access: yesJournal of Colloid and Interface Science, 1969
Abstract The stabilities of the silica hydrosols Ludox HS and Ludox AM have been studied as a function of pH in the presence of various concentrations of several hydrolyzable electrolytes. “Log electrolyte concentration-pH” domains are given for the HS sol in Al(NO3)3 and Al2(SO4)3 solutions and for the AM sol in Al(NO3)3 and La(NO3)3 solutions.
Lawrence H Allen, Egon Matijević
openaire   +2 more sources

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

Establishing Vadose Zone Slow-Release Carbon Sources for Enhanced Bioremediation Using Silica Suspension

open access: yesVadose Zone Journal, 2018
Delivery of C sources (nutrients) to the vadose zone and establishing a slow-release C source in this unsaturated zone are essential for promoting long-term, enhanced contaminant bioremediation at sites with deep vadose zones, such as the Hanford Site in
Lirong Zhong, Brady Lee, Shuo Yang
doaj   +1 more source

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