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Effect of Irradiation Temperature on the Growth of Helium Bubbles in Boron Carbide
Author(s) -
HOLLENBERG G. W.,
MASTEL B.,
BASMAJIAN J. A.
Publication year - 1980
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1980.tb10195.x
Subject(s) - boron carbide , bubble , materials science , irradiation , helium , equiaxed crystals , boron , liquid bubble , carbide , transmission electron microscopy , number density , radiochemistry , metallurgy , microstructure , nuclear physics , chemistry , nanotechnology , thermodynamics , mechanics , physics , organic chemistry
Boron carbide, in nuclear reactor neutron absorber applications, generates large quantities of helium, some of which is trapped in small bubbles within the grains. Transmission electron microscopy was used to examine the size distribution, shape, and density of these bubbles in boron carbide irradiated, at 540° to 1850°C, to burnups of 62 × 10 20 captures/cm 3 . Bubble density was reduced but bubble diameter was increased at high temperatures. Bubbles were flat disks at low temperatures and more equiaxed at higher temperatures.