SEM pictures and XRD spectra of B4C coated U02 and UO2-GCİ2O3 fuels
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Date
2000-10
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Turkish Atomic Energy Authority
Abstract
In this study, pure urania (U02) and urania-gadolinia (U02-Gd20 3), 5 and 10% Gd20 3 fuels
were first produced by sol-gel (solution-gelation) ceramic fuel preparation technique. The solgel micro sphere pelletization technique is a recent and advanced concept of fabrication of fuel
pellets that is because it ensures excellent micro homogeneity in the prepared pellets. The
sintered fuel pellets were then coated with boron carbide (B4C). This coating is performed
through chemical vapor deposition (CVD). The chemical vapor deposition consists of
essentially of reducing or decomposing a volatile compound of coating material upon a heat
surface on the size of micron dimensions.
In this work, boron carbide was deposited in a silica glass. Afterwards, the XRD spectra of B4C
coatings were taken by using B4C on the surface of the silica glass. The spectra results were in
agreement with the ones in the literature. The experiments showed that the composition of the
coating changed with deposition temperature. There was boron rich coating in the low
experimental temperatures while the coating in the high temperatures was found to be rich in the
carbon content. The morphology and the thickness of the coating have been investigated by
using Scanning Electron Microscopy (SEM). The investigation under the SEM revealed a fine
grained and some rod like layered boron carbide coatings.
Description
I. Avrasya Nükleer Bilimler ve Uygulamaları Konferansı : 23-27 Ekim 2000. İzmir, Türkiye.
Keywords
SEM pictures, SEM resimleri, XRD spectra, XRD spektrumları, U02 fuel, U02 yakıtı, UO2-GCİ2O3 fuel, UO2-GCİ2O3 yakıtı, Scanning Electron Microscopy, Taramalı Elektron Mikroskobu, Uranium dioxide, Uranyum dioksit, Gadolinium oxide, Gadolinyum oksit, Boron carbide, Bor karbür, Nuclear fuels, Nükleer yakıtlar, B4C, CVD
Citation
Dişbudak, H., (2000). SEM pictures and XRD spectra of B4C coated U02 and UO2-GCİ2O3 fuels. I. Eurasia Conference on Nuclear Science and Its Application, Presentations, Vol 1, (s. 259-265). 23-27 October 2000. İzmir, Turkey.