Results 211 to 220 of about 61,722 (260)

Gas-induced swelling in coal

Fuel, 1986
Abstract Dilatometric studies were carried out on three coal samples in various gaseous environments. The carbon contents of the three samples were 65.8%, 78.3% and 83.8% d.a.f., respectively. The sample with the lowest carbon content has shown the maximum length increase (0.5%) on exposure to a CO 2 atmosphere. This corresponds to a volume increase
P J Reucroft
exaly   +2 more sources

Evaluation of gas sorption-induced internal swelling in coal

Fuel, 2015
Abstract Gas sorption plays an important role in permeability evolution and gas flow in coal. Many efforts have been made to evaluate the effect of gas sorption on permeability. For example, the total gas sorption matrix swelling is divided in to two pars, one acts on cleat (internal swelling) and the other contributes to coal block deformation ...
Jie Zang, Yixin Zhao
exaly   +2 more sources

A theoretical model for gas adsorption-induced coal swelling

International Journal of Coal Geology, 2007
Abstract Swelling and shrinkage (volumetric change) of coal during adsorption and desorption of gas is a well-known phenomenon. For coalbed methane recovery and carbon sequestration in deep, unminable coal beds, adsorption-induced coal volumetric change may cause significant reservoir permeability change.
Zhejun Pan, Luke Connell
exaly   +2 more sources

Swelling and Gas Release in ZnO

Journal of the American Ceramic Society, 1980
Swelling and gas release in a model ceramic system, ZnO, were studied under known internal and external pressures, oxygen partial pressures, and temperatures. When gas was not released, the instantaneous swelling strain rate was: εα( DF exp‐Q/RT) where DF
A. A. SOLOMON, F. HSU
openaire   +1 more source

Measurement of Swelling for PP/Gas Mixtures

SAE Technical Paper Series, 2005
<div class="htmlview paragraph">Foaming of thermoplastic polyolefins (TPO) and thermoplastic elastomers (TPE) is gaining interest because of the lightweight and high performance to weight ratio of foamed automotive parts. Since foaming will occur mainly in the PP matrix in these PP-based automotive materials, understanding of the thermophysical ...
Y. G. Li, J. Wang, C. B. Park
openaire   +1 more source

Kinetics of Gas-Bubble Swelling in Silver

Journal of Applied Physics, 1971
A nondestructive method has been used to monitor continuously the volume changes in thin-walled tubes of oxygen-bearing silver which were heated in an argon ambient containing a few percent hydrogen. A large direct current was used to heat the samples while their ends were water cooled.
H. R. Patil, H. B. Huntington
openaire   +1 more source

Reversibility of fission gas swelling in uranium

Journal of Nuclear Materials, 1969
Abstract The effect of hydrostatic pressures up to 1000 bar on the behavior of pre-formed bubbles in irradiated uranium has been studied. High pressure, 900 °C anneals cause the fission gas swelling, induced in uranium by 600 °C vacuum anneals, to be reversed. Subsequent high temperature (900–1080 °C) vacuum tests produce the same swelling as samples
G.L. Kulcinski, R.D. Leggett
openaire   +1 more source

The theory of degassing and swelling of a supersaturated-by-gas solution

Physica A: Statistical Mechanics and its Applications, 2017
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Kuchma, A. E., Shchekin, A. K., Bulgakov, M. Yu.   +2 more
openaire   +1 more source

Mechanisms of swelling and gas release in uranium dioxide

Journal of Nuclear Materials, 1971
Abstract Data on the external dimensional changes and gas release behavior of uranium dioxide irradiated in tungsten-rhenium claddings at surface temperatures from 1325 to 1900 °C are presented. External dimensional changes and gas release fractions increase with increasing temperatures; but the density of the uranium dioxide shows little change ...
R.F. Hilbert, V.W. Storhok, W. Chubb, D.L. Keller   +3 more
openaire   +1 more source

Fission gas swelling of refractory nuclear fuels

Materials Science and Engineering, 1972
Abstract The external diametral swelling rates of uranium oxides, nitrides and carbides at temperatures of up to 1900°C are presented. Under similar conditions, the swelling rates are seen to increase from approximately 0.2 percent per 1020 fissions per cm3 at 1200°C to 10–30 percent per 1020 fissions per cm3 at 1900°C.
W Chubb, R.F Hilbert, V.W Storhok, D.L Keller   +3 more
openaire   +1 more source