Results 51 to 60 of about 1,241,175 (302)

Heterogeneous Nucleation Mechanism of Potassium Iodide on Graphene Surface in Water

Crystals
In this work, molecular dynamic (MD) simulations are applied to investigate the heterogeneous nucleation mechanism of KI on a graphene surface in water.
Yan-Nan Chen, Yu-Zhen Liu, Qiang Sun
doaj   +1 more source

Ice nucleation from aqueous NaCl droplets with and without marine diatoms [PDF]

Atmospheric Chemistry and Physics, 2011
Ice formation in the atmosphere by homogeneous and heterogeneous nucleation is one of the least understood processes in cloud microphysics and climate. Here we describe our investigation of the marine environment as a potential source of atmospheric IN ...
P. A. Alpert, J. Y. Aller, D. A. Knopf
doaj   +1 more source

Heterogeneous Crystal Nucleation from the Melt in Polyethylene Oxide Droplets on Graphite: Kinetics and Microscopic Structure

Crystals, 2021
It is well known that the crystallization of liquids often initiates at interfaces to foreign solid surfaces. In this study, using polarized light optical microscopy, atomic force microscopy (AFM), and wide-angle X-ray scattering (WAXS), we investigate ...
Muhammad Tariq, Thomas Thurn-Albrecht, Oleksandr Dolynchuk   +2 more
doaj   +1 more source

Nanoscale mapping of non-uniform heterogeneous nucleation kinetics mediated by surface chemistry.

Journal of the American Chemical Society, 2019
Nucleation underlies the formation of many liquid-phase synthetic and natural materials with applications in materials chemistry, geochemistry, biophysics, and structural biology.
Mei Wang, T. Dissanayake, Chiwoo Park, Karen J Gaskell, T. Woehl   +4 more
semanticscholar   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Homogeneous vs. heterogeneous nucleation in water-dicarboxylic acid systems [PDF]

Atmospheric Chemistry and Physics, 2009
Binary heterogeneous nucleation of water-succinic/glutaric/malonic/adipic acid on nanometer-sized particles is investigated within the frame of classical heterogeneous nucleation theory. Homogeneous nucleation is also included for comparison. It is found
A. I. Hienola, H. Vehkamäki, I. Riipinen, M. Kulmala   +3 more
doaj  

A molecular dynamics study of heterogeneous nucleation in generic liquid/substrate systems with positive lattice misfit

Materials Research Express, 2020
Nucleation plays a critical role in many natural and technological processes, and nucleation control requires detailed understanding of nucleation process at atomic level.
Z Fan, H Men
doaj   +1 more source

Molecular dynamics simulation of athermal heterogeneous nucleation of solidification

Computational materials science, 2019
Athermal heterogeneous nucleation via grain refiners inoculated in undercooled Al melt is investigated by molecular dynamics (MD) simulations. A thin solid Al layer appears on close-packed surfaces of a cubic Ti particle and it grows to a spherical cap ...
T. Fujinaga, Y. Shibuta
semanticscholar   +1 more source