Matches in SemOpenAlex for { <https://semopenalex.org/work/W609628999> ?p ?o ?g. }
Showing items 1 to 57 of
57
with 100 items per page.
- W609628999 abstract "The high magnesium alloy Magnox Al80 is used as a clad for nuclear fuel employed in the UK gas-cooled, graphite moderated power station reactors of the same name. Following irradiation, spent fuel elements are stored in aqueous environments. Historical corrosion studies and plant experience have identified suitable chemistry regimes to ensure passivity of the material, by maintaining high pH and very low concentrations of aggressive anions, notably chloride. Despite this large body of work, certain aspects of the corrosion mechanism are not well characterised, notably, the growth kinetics of surfaces with thick passive films, the manner in which chloride initiates film breakdown and the underlying mechanism of localised corrosion in alkaline environments. A variety of corrosion investigation techniques have been applied here to address these knowledge gaps.Extensive electrochemical work has been supported by characterisation of the corrosion morphology with in situ observations including correlated videomicroscopy, quantitative image analysis and micro-tomography. These results have allowed targeting of quantum mechanical atomistic calculations on ionic adsorption and substitution at a simulated passive film lattice interface. Production of magnesium microelectrodes and application for corrosion study have been reported for the first time. Finite element modelling has been used for interpretation and reconciliation of these results, allowing comparison between techniques, previous observations and with plant experience.The findings of these studies have provided clarity on a number of aspects of Magnox, and magnesium, corrosion behaviour. An extension of the high field film growth model has been proposed, incorporating the effect of an outer hydroxide layer which stabilises the very thin, dense inner oxide at the metal surface. The outcomes of atomistic simulations relating to anions on the passive film lattice interface have been related semi-quantitatively to macroscopic results. Magnesium has been clearly shown to undergo salt film corrosion in conditions not substantially different from those in a fuel storage environment.Consideration of these findings in the context of previous mechanistic work has led to the proposal of a reaction scheme which reconciles the very different behaviours of these materials with a small number of underlying reactions. These describe corrosion according to reactions across a very thin surface film (whether oxide or salt film) with the rate, evolution and morphology being determined largely by the specific mass transport processes at work." @default.
- W609628999 created "2016-06-24" @default.
- W609628999 creator A5056498668 @default.
- W609628999 date "2013-08-02" @default.
- W609628999 modified "2023-09-24" @default.
- W609628999 title "Passive and localised corrosion behaviour of a high magnesium alloy (Magnox Al80)" @default.
- W609628999 hasPublicationYear "2013" @default.
- W609628999 type Work @default.
- W609628999 sameAs 609628999 @default.
- W609628999 citedByCount "0" @default.
- W609628999 crossrefType "dissertation" @default.
- W609628999 hasAuthorship W609628999A5056498668 @default.
- W609628999 hasConcept C159985019 @default.
- W609628999 hasConcept C191897082 @default.
- W609628999 hasConcept C192562407 @default.
- W609628999 hasConcept C20625102 @default.
- W609628999 hasConcept C2778695967 @default.
- W609628999 hasConcept C2779227376 @default.
- W609628999 hasConcept C2779720300 @default.
- W609628999 hasConcept C33574316 @default.
- W609628999 hasConcept C543218039 @default.
- W609628999 hasConceptScore W609628999C159985019 @default.
- W609628999 hasConceptScore W609628999C191897082 @default.
- W609628999 hasConceptScore W609628999C192562407 @default.
- W609628999 hasConceptScore W609628999C20625102 @default.
- W609628999 hasConceptScore W609628999C2778695967 @default.
- W609628999 hasConceptScore W609628999C2779227376 @default.
- W609628999 hasConceptScore W609628999C2779720300 @default.
- W609628999 hasConceptScore W609628999C33574316 @default.
- W609628999 hasConceptScore W609628999C543218039 @default.
- W609628999 hasLocation W6096289991 @default.
- W609628999 hasOpenAccess W609628999 @default.
- W609628999 hasPrimaryLocation W6096289991 @default.
- W609628999 hasRelatedWork W133412171 @default.
- W609628999 hasRelatedWork W1551015142 @default.
- W609628999 hasRelatedWork W1601181300 @default.
- W609628999 hasRelatedWork W162127973 @default.
- W609628999 hasRelatedWork W1778378084 @default.
- W609628999 hasRelatedWork W1981665034 @default.
- W609628999 hasRelatedWork W1992096517 @default.
- W609628999 hasRelatedWork W2034859241 @default.
- W609628999 hasRelatedWork W2056948868 @default.
- W609628999 hasRelatedWork W2071980214 @default.
- W609628999 hasRelatedWork W2077151440 @default.
- W609628999 hasRelatedWork W2314807501 @default.
- W609628999 hasRelatedWork W2335717113 @default.
- W609628999 hasRelatedWork W241747267 @default.
- W609628999 hasRelatedWork W2558690557 @default.
- W609628999 hasRelatedWork W28528075 @default.
- W609628999 hasRelatedWork W3028306890 @default.
- W609628999 hasRelatedWork W3199956951 @default.
- W609628999 hasRelatedWork W69602463 @default.
- W609628999 hasRelatedWork W178950598 @default.
- W609628999 isParatext "false" @default.
- W609628999 isRetracted "false" @default.
- W609628999 magId "609628999" @default.
- W609628999 workType "dissertation" @default.