Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Thermal Conductivity of Coated Particle Uranium Dioxide Tungsten Cermets
Author: Thermal Conductivity of Coated Particle UO2-tungsten Cermets
Author: L. N. GrossmanPublisher:
ISBN:
Category : Ceramic metals
Languages : en
Pages : 34
Book Description
Estimating Thermal Conductivity of Cermet Fuel Materials for Nuclear Reactor Application
Author: John V. MillerPublisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 34
Book Description
Development of Low Thermal Expansion Tungsten UO 2 Cermet Fuel
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An attempt was made to develop a tungsten-uranium dioxide cermet of high fue 1 loading with thermal expansion approaching that of tungsten and with good dimensional stability on thermal cycling. These goals were sought through the use of tungsten-coated uranium dioxide particles with sufficient locally available void volume to accommodate the difference in thermal expansion between the uranium dioxide and the tungsten matrix and through limitation of plastic deformation in the particles during fabrication to avoid mechanical keying of the particles and the matrix. The particles were vibratorily compacted prior to hot pressing. The thermal expansion of the cermets was determined and they were thermal cycle tested. The thermal expansion of the cermets was considerably closer to that of tungsten than was observed with previously reported specimens of similar composition. However, the thermal cycling of the cermets resulted in intolerable growth. This growth could be accounted for by the agglomeration of gases trapped in the uranium dioxide particles during deposition of the tungsten coating.
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