Composite metal-ceramic material for high temperature energy conversion applications

L.R. Wolff

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    Abstract

    At Eindhoven Universitu of technology a composite metal-ceramic material is being developed. It will serve as a protective confinement for a combustion heated Thermionic Energy Converter (TEC). This protective confinement of 'hot shell' consists of a composite W-TiN-SiC layer structure. The outer coating of SiC is to protect the TEC against the high temperature (1700°C) combustion atmosphere. The inner layer of tungsten serves as an emitter for the TEC. The intermediate TiN layer functions as a diffusion barrier preventing the tungsten from reacting with the SiC. The composite material is vacuum tight and thermal batigue resistant. The CVS-SiC can give adequate corrosion resistance while the tungsten is Cs-resistant and is a good thermionic emitter.
    Original languageEnglish
    Pages (from-to)991-996
    Number of pages6
    JournalScience of Ceramics
    Volume14
    Publication statusPublished - 1988

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