ZrB2-SiC(Al) ceramics with high resistance to oxidation at 1500 degrees C

    Authors

    Y. G. Wang; L. Luo; J. Sun;L. A. An

    Comments

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    Abbreviated Journal Title

    Corrosion Sci.

    Keywords

    Ceramic; SEM; Oxidation; DIBORIDE-SILICON CARBIDE; ZIRCONIUM DIBORIDE; SIALCN CERAMICS; SILICOALUMINUM CARBONITRIDE; TEMPERATURE CERAMICS; WATER-VAPOR; COMPOSITES; ZRB2; OXIDATION/CORROSION; MICROSTRUCTURE; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    Abstract

    In this paper, we study the oxidation behaviour of a ZrB2/Al-doped SiC composite at 1500 degrees C. The composite was prepared by hot-pressing the mixture of ZrB2 and polymer-derived SiC(Al). The oxidation behaviour was studied by measuring the weight change as a function of oxidation time and by observing the structure of the oxide layer. It is shown that the ZrB2-SiC(Al) exhibits different oxidation behaviour and improved oxidation resistance as compared to the conventional ZrB2-SiC without Al-doping. The improvement in oxidation resistance is attributed to that AI-doping could increase the bond strength of the Si-O and suppress the active oxidation of SiC. (C) 2013 Elsevier Ltd. All rights reserved.

    Journal Title

    Corrosion Science

    Volume

    74

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    154

    Last Page

    158

    WOS Identifier

    WOS:000321796800018

    ISSN

    0010-938X

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