A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Production and use of radioactive [Br-82]KBr in high-temperature corrosion studies
Tekijät: Lehmusto J, Bergelin M, Lill JO
Kustantaja: PERGAMON-ELSEVIER SCIENCE LTD
Julkaisuvuosi: 2019
Lehti:Corrosion Science
Tietokannassa oleva lehden nimiCORROSION SCIENCE
Lehden akronyymi: CORROS SCI
Vuosikerta: 148
Aloitussivu: 24
Lopetussivu: 30
Sivujen määrä: 7
ISSN: 0010-938X
eISSN: 1879-0496
DOI: https://doi.org/10.1016/j.corsci.2018.12.003
Tiivistelmä
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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