Results 1 to 10 of about 5,480,270 (237)

2D WSe2 Flakes for Synergistic Modulation of Grain Growth and Charge Transfer in Tin‐Based Perovskite Solar Cells

open access: yesAdvanced Science, 2021
Tin (Sn)‐based perovskites with favorable optoelectronic properties and ideal bandgaps have emerged as promising alternatives to toxic lead (Pb)‐based perovskites for photovoltaic applications.
Tianyue Wang   +6 more
doaj   +1 more source

Study on the Phase Selection and Debye Temperature of Hyper-Peritectic Al-Ni Alloy under High Pressure

open access: yesMetals, 2021
The phase selection of hyper-peritectic Al-47wt.%Ni alloy solidified under different pressures was investigated. The results show that Al3Ni2 and Al3Ni phases coexist at ambient pressure, while another new phase α-Al exists simultaneously when solidified
Xiaohong Wang   +5 more
doaj   +1 more source

Influence of Austenitisation Time and Temperature on Grain Size and Martensite Start of 51CrV4 Spring Steel

open access: yesCrystals, 2022
51CrV4 spring steel is a martensitic steel grade that is heat treated by quenching and tempering. Therefore, austenitisation is an important step that influences steel properties.
Anže Bajželj, Jaka Burja
doaj   +1 more source

Grain Growth in Cadmium [PDF]

open access: yesNature, 1964
MUCH has been written of the growth of the component crystalline grains which occurs when a metal is maintained at a constant high temperature, but hitherto no simple law of growth appears to have been established. Working with cadmium, we have found laws which hold with precision for that metal.
E. N. DA C. ANDRADE, D. A. ABOAV
openaire   +1 more source

The effect of secondary abnormal grain growth on the dielectric properties of La/Mn co-doped BaTiO3 ceramics [PDF]

open access: yesScience of Sintering, 2006
La/Mn-codoped BaTiO3 systems, obtained by solid state reactions, were investigated regarding their microstructure characteristics and ferroelectric properties.
Živković Lj.M.   +3 more
doaj   +1 more source

Influence of Carbon Diffusion and the Presence of Oxygen on the Microstructure of Molybdenum Powders Densified by SPS

open access: yesMetals, 2020
Due to molybdenum’s Body-Centered Cubic (BCC) crystalline structure, its ductile–brittle transition temperature is sensitive to shaping, purity and microstructure. Dense molybdenum parts are usually shaped by the powder metallurgy process.
Mathias Moser   +5 more
doaj   +1 more source

Nucleation and growth of dust grains

open access: yesThe Astrophysical Journal, 1974
Classical nucleation theory must be modified for the condensation of small, solid dust grains. Ion nucleation is unimportant and exchange reactions with gas molecules are required. For carbon-rich stellar atmospheres, hydrocarbons act as intermediaries for converting acetylene gas into carbon particles.
openaire   +1 more source

Effect of cobalt oxide on the sintering and grain growth of Al2O3-YAG composite nanopowder [PDF]

open access: yesScience of Sintering, 2010
In the present study, the effect of cobalt oxide on the densification of Al2O3-YAG composite nanopowder was investigated. An amorphous nanopowder was synthesized and crystallized to Al2O3-YAG after heat-treatment via a solid-state reaction.
Hassanzadeh-Tabrizi S.A.   +1 more
doaj   +1 more source

Characterization and Grouping of All Primary Branches at Various Positions on a Rice Panicle Based on Grain Growth Dynamics

open access: yesAgronomy, 2020
Grain filling can directly influence rice yield. However, there is limited information on the growth relationship among grains at different positions on the entire panicle during grain filling.
Quan Zhao   +15 more
doaj   +1 more source

Phase-Field Simulation of Grain Growth in Uranium Silicide Nuclear Fuel

open access: yesCrystals
Uranium silicide (U3Si2) is regarded as a viable fuel option for improving the safety of nuclear power plants. In the present work, phase-field simulations were employed to investigate grain growth phenomena, encompassing both isotropic and anisotropic ...
Xiaoqiang Pan   +5 more
doaj   +1 more source

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