Resistivity and thermo-electric behaviour of some mixed-valence systems at high pressures and high temperatures

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-344-C5-345
Author(s):  
T. G. Ramesh ◽  
V. Shubha
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Mixed Valence ◽  
Thermo Electric

Brillouin scattering study of liquid methane under high pressures and high temperatures

2010 ◽  
Vol 133 (4) ◽  
pp. 044503 ◽  
Author(s):  
Min Li ◽  
Fangfei Li ◽  
Wei Gao ◽  
Chunli Ma ◽  
Liyin Huang ◽  
...  
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Brillouin Scattering ◽  
Scattering Study ◽  
Liquid Methane

scholarly journals Gaseous combustion at high pressures. —Part X. The co-volume corrections, maximum temperatures and dissociation of steam and carbon dioxide in explosions

1928 ◽  
Vol 119 (782) ◽  
pp. 464-480
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Internal Energy ◽  
High Temperatures ◽  
High Pressures ◽  
Internal Combustion ◽  
Systematic Survey ◽  
Explosion Method ◽  
Maximum Temperatures ◽  
Very High

During the researches upon high-pressure explosions of carbonic oxide-air, hydrogen-air, etc., mixtures, which have been described in the previous papers of this series, a mass of data has been accumulated relating to the influence of density and temperature upon the internal energy of gases and the dissociation of steam and carbon dioxide. Some time ago, at Prof. Bone’s request, the author undertook a systematic survey of the data in question, and the present paper summarises some of the principal results thereof, which it is hoped will throw light upon problems interesting alike to chemists, physicists and internal-combustion engineers. The explosion method affords the only means known at present of determining the internal energies of gases at very high temperatures, and it has been used for this purpose for upwards of 50 years. Although by no means without difficulties, arising from uncertainties of some of the assumptions upon which it is based, yet, for want of a better, its results have been generally accepted as being at least provisionally valuable. Amongst the more recent investigations which have attracted attention in this connection should be mentioned those of Pier, Bjerrum, Siegel and Fenning, all of whom worked at low or medium pressures.

scholarly journals Slow Strain Rate Testing of Ti-6Al-4V Alloy in Hydrogen Gas at High Pressures and High Temperatures

2017 ◽  
Vol 58 (6) ◽  
pp. 886-891 ◽  
Author(s):  
Kenichi Koide ◽  
Toshirou Anraku ◽  
Akihiro Iwase ◽  
Hiroyuki Inoue
Keyword(s):  
Strain Rate ◽  
High Temperatures ◽  
High Pressures ◽  
Hydrogen Gas ◽  
Slow Strain Rate ◽  
Slow Strain Rate Testing ◽  
Rate Testing

Effects of hydrogen on the microstructure and microchemistry of Ti3Al – Nb intermetallics at high temperatures and high pressures

1996 ◽  
Vol 11 (9) ◽  
pp. 2186-2197 ◽  
Author(s):  
H. Z. Xiao ◽  
I. M. Robertson ◽  
H. K. Birnbaum
Keyword(s):  
Solid Solution ◽  
High Temperatures ◽  
High Pressures ◽  
Chemical Potential ◽  
Substitutional Solid Solution ◽  
Hydrogen Gas ◽  
Solid Solution Phase ◽  
Face Centered Cubic ◽  
Fine Grained ◽  
Surrounding Matrix

The microstructural and microchemical changes produced in a Ti–25Al–10Nb–3V–1Mo alloy (at. %) by charging at high temperatures in high pressures of hydrogen gas have been studied using transmission electron microscopy (TEM) and x-ray methods. Hydrides incorporating all of the substitutional solutes that formed during charging have a face-centered cubic (fcc) structure and exhibit either a plate or fine-grained morphology. With increasing hydrogen content, the size of the hydrides decreases and their microchemistry changes as they approach the stable binary hydride, TiH2. Rejection of substitutional solute elements from the hydride produces changes in the microchemistry, and consequently in the crystal structure, of the surrounding matrix. In alloys containing 50 at. % H, this solute redistribution results in the formation of an orthohombic substitutional solid solution phase containing increased levels of Nb. The driving force of this redistribution of solutes is the reduction in the chemical potential of the system as the amount of the most stable hydride, TiH2, forms. The hydrides reverted to a solid solution on annealing in vacuum at 1073 K, and the original microchemistry of the alloy was restored. Reversion from the hydride structure to the original α2 ordered DO19 structure proceeds via a disordered HCP phase.

scholarly journals X-ray imaging for studying behavior of liquids at high pressures and high temperatures using Paris-Edinburgh press

2015 ◽  
Vol 86 (7) ◽  
pp. 072207 ◽  
Author(s):  
Yoshio Kono ◽  
Curtis Kenney-Benson ◽  
Yuki Shibazaki ◽  
Changyong Park ◽  
Yanbin Wang ◽  
...  
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
X Ray ◽  
X Ray Imaging

scholarly journals The phase diagram of Ti-6Al-4V at high-pressures and high-temperatures

2021 ◽  
Author(s):  
Simon MacLeod ◽  
Daniel Errandonea ◽  
Geoffrey Adam Cox ◽  
Hyunchae Cynn ◽  
Dominik Daisenberger ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Temperatures ◽  
High Pressures

Interfacial Tensions between Water and Non-polar Fluids at High Pressures and High Temperatures

1997 ◽  
Vol 13 (01) ◽  
pp. 89-95 ◽  
Author(s):  
Tian Yi-Ling ◽  
◽  
Xiao Yan-Fan ◽  
Zhu Hong-Xu ◽  
Dong Xi-Jing ◽  
...  
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Interfacial Tensions ◽  
Polar Fluids
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