Results 31 to 40 of about 2,888,981 (203)

Effect of Pressure on High-Temperature Dissolution [PDF]

open access: yes, 1969
The effect of pressure on high-temperature dissolution has been investigated. The solubility of NiO in Na2O-2SiO2 glass was found to decrease with applied pressure, indicating that the entry rate of atoms from a solute into a solvent is decreased by increased pressure.
Stett, Mark A., Fulrath, R.M.
openaire   +2 more sources

Pressure-induced phase transitions of ZnSe under different pressure environments

open access: yesAIP Advances, 2019
The structural, vibrational and electronic properties of ZnSe under different pressure environments up to ∼40.0 GPa were investigated using a diamond anvil cell in conjunction with ac impedance spectroscopy, Raman spectroscopy and high–resolution ...
Chang Pu   +6 more
doaj   +1 more source

Lanthanum Diffusion in Fluorapatite at 400 °C, 50 MPa and 4–16 wt %

open access: yesSeparations, 2021
Apatite is an important carrier of rare earth elements (REEs) and phosphorite is a potential REEs resource. However, the influence of hydrothermal fluids on the migration and enrichment of REE in apatite remains controversial.
Xiqiang Liu, Hui Zhang, Yunlong Liu
doaj   +1 more source

Electrochemical Corrosion Study of Zircaloy-4 in a LiOH Solution at High Temperature and Pressure

open access: yesInternational Journal of Electrochemical Science, 2018
The electrochemical corrosion of Zircaloy-4 in simulated pressurized water reactor coolant at 350°C was studied via in situ potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements.
Zhuo Wang   +5 more
doaj   +1 more source

High pressure–high temperature phase diagram of ammonia [PDF]

open access: yesThe Journal of Chemical Physics, 2008
The high pressure (P)–high temperature (T) phase diagram of solid ammonia has been investigated using diamond anvil cell and resistive heating techniques. The III-IV transition line has been determined up to 20GPa and 500K both on compression and decompression paths.
Ninet, S., Datchi, F.
openaire   +5 more sources

Morphology of Barite Synthesized by In-Situ Mixing of Na2SO4 and BaCl2 Solutions at 200 °C

open access: yesCrystals, 2021
Barite is an abundant sulfate mineral in nature. Especially, the variety of morphologies of barite is often driven by the mixing of Ba-bearing hydrothermal fluid and sulfate-bearing seawater around hydrothermal chimneys. In order to better understand the
Chunyao Wang   +7 more
doaj   +1 more source

Kondo effect in CeX$_{c}$ (X$_{c}$=S, Se, Te) studied by electrical resistivity under high pressure [PDF]

open access: yes, 2015
We have measured the electrical resistivity of cerium monochalcogenices, CeS, CeSe, and CeTe, under high pressures up to 8 GPa. Pressure dependences of the antiferromagnetic ordering temperature $T_{N}$, crystal field splitting, and the $\ln T$ anomaly ...
Hayashi, Y.   +7 more
core   +2 more sources

Electrical Properties of a Solid Electrolyte Based on In2O3-doped CaZrO3 Prepared by High-pressure Sintering

open access: yesInternational Journal of Electrochemical Science, 2020
The present work provides a simple and effective route for the production of high quality CaZr0.9In0.1O3-δ (CZI) at relatively low temperature by using high-pressure sintering method.
Jiazhuo Peng   +3 more
doaj   +1 more source

Thermodynamic Properties of Fe-Bearing Wadsleyite and Determination of the Olivine-Wadsleyite Phase Transition Boundary in (Mg,Fe)2SiO4 System

open access: yesFrontiers in Earth Science, 2022
The self-consistent molar volumes, elastic properties and thermodynamic properties of β-(Mg0.87,Fe0.13)2SiO4 wadsleyite have been determined over a wide temperature and pressure range based on an iterative numerical approach and experimental data from ...
Chang Su   +10 more
doaj   +1 more source

Effect of sintering temperature under high pressure in the uperconductivity for MgB2 [PDF]

open access: yes, 2001
We report the effect of the sintering temperature on the superconductivity of MgB2 pellets prepared under a high pressure of 3 GPa. The superconducting properties of the non-heated MgB2 in this high pressure were poor.
Jung, C. U.   +6 more
core   +1 more source

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