Light elements microanalysis of steel/B4C melts for nuclear power plants accident studies

. Out of pile small scale tests have been carried out to study the steam oxidation of B 4 C–steel liquid mixtures. Microstructures and composition of the mixes were investigated by electron probe microanalysis (EPMA). Quantitative analysis of the light B and C elements in complex B 4 C–stainless ste...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2008-06, Vol.161 (3-4), p.343-348
Main Authors: Sao Joao, Sergio, Duriez, Christian, Dominguez, Cristina, Jacquemain, Didier
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Exact sciences and technology
Microengineering
Nanochemistry
Nanotechnology
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Summary:. Out of pile small scale tests have been carried out to study the steam oxidation of B 4 C–steel liquid mixtures. Microstructures and composition of the mixes were investigated by electron probe microanalysis (EPMA). Quantitative analysis of the light B and C elements in complex B 4 C–stainless steel mixtures was approached gradually starting with the simplified Fe–B system. Measurements of boron contents in Fe–B phases were achieved with an absolute error of 2%. In addition, phase area ratio determination by BSE images analysis was coupled to quantitative analysis data to estimate the global composition of the samples. For non oxidized samples, a good correlation was obtained between this microanalysis determination and actual composition of the samples. The evolution of this global composition during the oxidation process was studied by performing successive tests with increasing oxidation duration. A preferential oxidation of boron and chromium was revealed.
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-007-0855-3