Microstructural factors which govern the oxidative properties of graphite

Heinrich Badenhorst, Brian Rand, Walter W. Focke

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

    Abstract

    Graphite is widely utilized in high temperature applications under oxidative conditions. As such an understanding of the oxidative behaviour of graphite and hence the factors which govern these properties is essential. The exact kinetic mechanism remains a complex and disputed topic. However the effect of the microstructure on the oxidation is often neglected. The primary microstructural factors which influence the oxidation and graphite properties which lead to these are discussed. This includes the complex and varied microstructures found in real graphite materials from different origins. As well as the influence of both catalytically active and inert impurities on the development of the microstructure. This affords a comprehensive view of the influence of the microstructure on the oxidative properties of graphite. It is possible to represent the simplest of these behaviours qualitatively through simulation of the microstructural development. This indicates that the use of intricate and arbitrary kinetic reaction schemes is not necessary to accurately describe and sensibly compare the oxidative properties of different graphite materials.

    Original languageEnglish
    Title of host publicationGraphite
    Subtitle of host publicationProperties, Occurrences and Uses
    PublisherNova Science Publishers
    Pages215-253
    Number of pages39
    ISBN (Print)9781626185760
    Publication statusPublished - 1 Dec 2013

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