A1 Refereed original research article in a scientific journal
Production and use of radioactive [Br-82]KBr in high-temperature corrosion studies
Authors: Lehmusto J, Bergelin M, Lill JO
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2019
Journal:Corrosion Science
Journal name in sourceCORROSION SCIENCE
Journal acronym: CORROS SCI
Volume: 148
First page : 24
Last page: 30
Number of pages: 7
ISSN: 0010-938X
eISSN: 1879-0496
DOI: https://doi.org/10.1016/j.corsci.2018.12.003
Abstract
The applicability of radioactive species in high-temperature research as tracers was studied with KBr and an Nb-stabilised austenitic stainless steel. KBr-induced high-temperature corrosion was addressed by using radioactive [82Br]KBr and measuring the radioactivity of the sample surface with a high-resolution phosphor imaging device.Neutron activation by cyclotron proved to be a very cost-effective way to produce radioactive [82Br]KBr with a high radionuclidic purity and a negligible level of unwanted side products. KBr reacts rapidly with steel, forming potassium chromate and metal bromides, both of which are reducing the protective properties of the surface oxide through chromium depletion and increasing porosity.
The applicability of radioactive species in high-temperature research as tracers was studied with KBr and an Nb-stabilised austenitic stainless steel. KBr-induced high-temperature corrosion was addressed by using radioactive [82Br]KBr and measuring the radioactivity of the sample surface with a high-resolution phosphor imaging device.Neutron activation by cyclotron proved to be a very cost-effective way to produce radioactive [82Br]KBr with a high radionuclidic purity and a negligible level of unwanted side products. KBr reacts rapidly with steel, forming potassium chromate and metal bromides, both of which are reducing the protective properties of the surface oxide through chromium depletion and increasing porosity.
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