Results 1 to 10 of about 28,638 (302)

Do Olivine Crystallization Temperatures Faithfully Record Mantle Temperature Variability? [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Crystallization temperatures of primitive olivine crystals have been widely used as both a proxy for, or an intermediate step in calculating, mantle temperatures. The olivine‐spinel aluminum‐exchange thermometer has been applied to samples from mid‐ocean
Simon Matthews   +4 more
doaj   +5 more sources

Research on Crystallization and Melting Behaviors of Rice Bran Oil [PDF]

open access: yesLiang you shipin ke-ji, 2021
In this paper, the isothermal and non-isothermal crystallization and melting behaviors of rice bran oil (RBO) are studied, and the composition of the precipitates under cold temperatures from RBO is analyzed.The results show that the isothermal shear ...
ZHOU Shuai   +3 more
doaj   +2 more sources

Activation Energies and Temperature Dependencies of the Rates of Crystallization and Melting of Polymers [PDF]

open access: yesPolymers, 2020
The objective of this review paper is to survey the phase transition kinetics with a focus on the temperature dependence of the rates of crystallization and melting, as well as on the activation energies of these processes obtained via the Arrhenius kinetic treatment, including the treatment by isoconversional methods.
Sergey Vyazovkin
exaly   +3 more sources

Effect of Al addition on the thermal properties of lead -tin alloy

open access: yesResults in Materials, 2021
The effect of aluminium addition on the thermal parameters of Pb–Sn alloy was investigated. The technique of Differential Thermal Analysis (DTA) was selected to determine the phase transformation temperatures and the effect of varying heating rates ...
Ali Alnakhlani   +2 more
doaj   +1 more source

Investigation of size dependences of melting and crystallization temperatures and specific excess surface energy of nickel nanoparticles under melting / crystallization phase transition [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
The Monte Carlo method was used to study size dependences of the melting and crystallization temperatures of nickel nanoparticles, their hysteresis area, and changes in the specific excess surface energy during the direct and reverse melting ...
P.M. Ershov   +7 more
doaj   +1 more source

Size effect and structural transformations in ternar nanoparticles Tix-Al96-x-V4

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The final configurations obtained during crystallization in ternary metal nanoalloys Tix-Al96-x-V4 of various compositions were studied. The molecular dynamics method was used as an atomistic simulation method.
V.S. Myasnichenko   +4 more
doaj   +1 more source

Synthesis, Geometry Structure and Properties of N, N’-Carbonic Bis(Piperonylic Acid) Dihydrazide [PDF]

open access: yesE3S Web of Conferences, 2020
In this study, N, N’-carbonic bis(piperonylic acid) dihydrazide (BPACH) was synthesized to broaden the category of piperonylic acid derivative and evaluate its influences on the thermal properties of poly(L-lactic acid) (PLLA).
Cai Yanhua   +3 more
doaj   +1 more source

Crystallization in blend of polycaprolactone and high molecular weight polyethylene oxide

open access: yesNuclear Analysis, 2023
The concentration distribution in blend of polyethylene oxide (PEO)/polycaprolactone (PCL) and subsequent crystallization were investigated with differential scanning calorimetry, in-situ small angle X-ray scattering and wide angle X-ray scattering.
Nan Tian, Junwei Chen, Yanping Liu
doaj   +1 more source

Complex approach to the simulation of melting and crystallization in five-component metallic nanoparticles: molecular dynamics and the Monte Carlo method

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The melting and crystallization phase transitions in the five-component metallic Au-Ag-Cu-Pd-Pt equiatomic nanosystem were investigated. The complex approach to atomistic modeling is due to the use of alternative methods of computer simulation – the ...
N.Yu. Sdobnyakov   +6 more
doaj   +1 more source

THE INFLUENCE OF SURFACE AND INTERPHASE CHARACTERISTICS ON THE BEHAVIOR OF THE PHASE DIAGRAM OF NANOPARTICLES OF THE PALADIUM-PLATINUM ALLOY

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020
The melting and crystallization temperatures have been calculated and the phase diagram of Pd — Pt metal particles of 10 nm in size has been constructed.
L.P. Aref`eva, I.G. Shebzukhova
doaj   +1 more source

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