Production and use of radioactive [82Br]KBr in high-temperature corrosion studies

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Juho Lehmusto, Mikael Bergelin, Jan-Olof Lill
Publiceringsår: 2019
Tidskrift: Corrosion Science
Tidskriftsakronym: Corros. Sci.
Volym: 148
Artikelns första sida, sidnummer: 24
Artikelns sista sida, sidnummer: 30


Abstrakt

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.


Nyckelord

High temperature corrosion, Selective oxidation, Stainless steel


Dokument


Senast uppdaterad 2019-19-10 vid 05:03