Results 21 to 30 of about 2,860,718 (307)

Raman scattering of 2H-MoS2 at simultaneous high temperature and high pressure (up to 600 K and 18.5 GPa)

AIP Advances, 2016
The Raman spectroscopy of natural molybdenite powder was investigated at simultaneous conditions of high temperature and high pressure in a heatable diamond anvil cell (DAC), to obtain the temperature and pressure dependence of the main Raman vibrational
JianJun Jiang, HePing Li, LiDong Dai, HaiYing Hu, ChaoShuai Zhao   +4 more
doaj   +1 more source

Block and malleable arsenopyrite hot-pressure sintering: applied implications

Journal of Materials Research and Technology, 2020
A hot-pressure technique was used to sinter block-shaped, malleable, and compact arsenopyrite, based on the purified natural material. The results show that 500 °C and 1.0 GPa are the optimum temperature and pressure conditions, while at temperatures ...
Kai Zheng, Heping Li, Shuai Wang, Luying Wang, Qingyou Liu   +4 more
doaj   +1 more source

A Review of High-Temperature and High-Pressure Experimental Apparatus Capable of Generating Differential Stress

Frontiers in Earth Science, 2022
It has been demonstrated that the matters in the earth’s interior are subjected to isotropic hydrostatic pressure and are also extensively superimposed by the differential stress.
Dongsheng Ren, Dongsheng Ren, Heping Li
doaj   +1 more source

Pressure-induced phase transitions of ZnSe under different pressure environments

AIP 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, Lidong Dai, Heping Li, Haiying Hu, Kaixiang Liu, Linfei Yang, Meiling Hong   +6 more
doaj   +1 more source

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

Separations, 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

International 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, Heping Li, Liping Xu, Qingyou Liu, Lei Zha, Sen Lin   +5 more
doaj   +1 more source

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

Crystals, 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, Li Zhou, Shuai Zhang, Li Wang, Chunwan Wei, Wenlei Song, Liping Xu, Wenge Zhou   +7 more
doaj   +1 more source

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

, 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., Kang, W. N., Kim, Kijoon H. P., Kim, Mun-Seog, Lee, S. Y., Lee, Sung-Ik, Park, Min-Seok   +6 more
core   +1 more source

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

International 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, Heping Li, Dongsheng Ren, Pan Wang   +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

Frontiers 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, Chang Su, Chang Su, Yonggang Liu, Dawei Fan, Wei Song, Jiyi Jiang, Jiyi Jiang, Zhenjun Sun, Zhenjun Sun, Guang Yang   +10 more
doaj   +1 more source