Results 271 to 280 of about 2,327,758 (293)
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A theory of swelling and gas release for reactor materials
Journal of Nuclear Materials, 1964Abstract The physical mechanisms deduced from the direct observation of inert gas bubbles in the electron microscope are used to evolve a model, or theory, for swelling. The model assumes the insolubility of the inert gases and the bodily migration of the gas bubbles, and relies upon the equation of state for the inert gas, upon the surface energy ...
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Effect of gas atoms on swelling of austenitic stainless steel
Journal of Nuclear Materials, 1994Abstract There have been many studies on the effect of He on swelling, however not so many on the effect of nitrogen on swelling. In this study the effect of nitrogen on swelling of 316 steel was investigated under HVEM irradiation for establishing a model of swelling.
N. Igata +3 more
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Gas-induced swelling of beryllium implanted with deuterium ions
Journal of Nuclear Materials, 1996Abstract An extensive TEM study of the microstructure of Be TIP-30 irradiated with 3 and 10 keV D ions up to fluences, Φ, in the range from 3 × 10 20 to 8 × 10 21 D/m 2 at temperatures, T irr = 300, 500 and 700 K has been carried out. Depth distributions of deuterium in a form of separate D atoms and D 2 molecules have been investigated by ...
V.N. Chernikov +6 more
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Estimating Swelling in Oil-Based Mud Due to Gas Kick Dissolution
Volume 11: Petroleum Technology, 2020Abstract Gas kick is an ever-present hazard whose importance is magnified for offshore drilling situations. Modeling gas kick is a complex problem that requires an understanding of the relevant fluid dynamics as well as the solubility of natural gas in oil-based muds (OBM).
Kaushik Manikonda +4 more
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A Statistical Fuel Swelling and Fission Gas Release Model
Nuclear Applications and Technology, 1970AbstractA computer simulation of a fuel region has been developed based on movement of fission gas bubbles in solids under a thermal gradient. Within this region, fission gas events are followed via a Monte Carlo technique. Individual bubbles are followed through their time history from nucleation to release from the fuel, with interactions at ...
H. R. Warner, F. A. Nichols
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Fission gas release and swelling in UO2 doped with Cr2O3
Journal of Nuclear Materials, 1980Abstract UO 2 doped with 0.5 wt% Cr 2 O 3 has been irradiated at 1500°C to three differing burn-ups to a maximum of 0.45% FIMA. The gas release and swelling have been compared with a reference fuel and found to be similar. To explain the results it is necessary to assume both an enhanced gas diffusion rate and a reduced grain boundary surface ...
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New Approach for Simultaneous Measurement of Gas Absorption and Swelling
Industrial & Engineering Chemistry Research, 2011For sorption measurements many different methods are applicable, but nearly all of them require a correction of the raw experimental data by a factor including the sample’s volume.
Tobias M. Fieback, Frieder Dreisbach
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Journal of Controlled Release, 1998
In recent studies, NMR imaging has been used to investigate the swelling of hydroxypropylmethylcellulose (HPMC) tablets and to determine polymer concentration distributions in the swollen matrix. The total amount of polymer in the system was computed from these distributions and was up to 35% greater than the known weight of HPMC in the tablet.
C A, Fyfe, A I, Blazek
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In recent studies, NMR imaging has been used to investigate the swelling of hydroxypropylmethylcellulose (HPMC) tablets and to determine polymer concentration distributions in the swollen matrix. The total amount of polymer in the system was computed from these distributions and was up to 35% greater than the known weight of HPMC in the tablet.
C A, Fyfe, A I, Blazek
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A Kinetic Rate Theory Modelling of Fission Gas Release and Fuel Swelling for UN Fuels
Journal of Nuclear Materials, 2021Long Gu, Wenbo Liu, Di Yun
exaly
Modeling Gas-Adsorption-Induced Swelling and Permeability Changes in Coals
International Journal of Coal Geology, 2014Khaled Gasem, Sayeed Mohammad
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