Influence of Pt, Fe/Ni/Cr–containing intermetallics and deuterium on the oxidation of Zr-based materials
2005 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 340, no 2-3, 271-283 p.Article in journal (Refereed) Published
An in situ gas phase analysis technique and the 18O-SIMS technique are used to evaluate the transport of oxygen and hydrogen in oxidation of Zr-based materials. At 400 °C, it is found that oxygen dissociation efficiency decreases in the order: Pt > Zr2Fe > Zr2Ni > ZrCr2 Zircaloy-2. Two Zr-plates partly coated with 200 Å porous Pt, with and respectively without D in the substrate, were oxidized in two stages at 400 °C. SIMS depth profiles in the Pt area show that an enhanced oxidation takes place mainly by inward oxygen transport. A minimum in the oxide thickness was found near the Pt area on both Zr plates. Two Ar-filled Zircaloy-2 tubes with ZrSn liner were exposed at 370 °C to 22 mbar water, filled in from one side. Our experimental results suggest that a proper choice of the SPP composition and size distribution can lead to reduced hydrogen uptake during oxidation of Zr-based materials in water.
Place, publisher, year, edition, pages
2005. Vol. 340, no 2-3, 271-283 p.
high-temperature oxidation, oxide-growth mechanisms, zirconium alloys, zircaloy-4 oxidation, scale adherence, hydrogen uptake, kinetics, oxygen, water, corrosion
IdentifiersURN: urn:nbn:se:kth:diva-6090DOI: 10.1016/j.jnucmat.2004.12.005ISI: 000228116500015ScopusID: 2-s2.0-14844285777OAI: oai:DiVA.org:kth-6090DiVA: diva2:10701
QC 201006292006-09-082006-09-082011-10-19Bibliographically approved