Room temperature fatigue of ZrB2-SiC ceramic composites

    Authors

    M. Lugovy; N. Orlovskaya; M. Neubert; C. G. Aneziris; T. Graule;J. Kuebler

    Comments

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    Abbreviated Journal Title

    Ceram. Int.

    Keywords

    Composites; Fatigue; Borides; SiC; Fractography; DIBORIDE-BASED CERAMICS; CYCLIC FATIGUE; MECHANICAL-PROPERTIES; CRACK-PROPAGATION; CREEP DEFORMATION; BENDING TESTS; BEHAVIOR; ALUMINA; STRENGTH; MICROSTRUCTURE; Materials Science, Ceramics

    Abstract

    Room temperature time dependent properties of ZrB2-30 wt%SiC ceramic composite have been studied. Both static slow crack growth and cyclic fatigue deformation have been investigated. While static slow crack growth has been evaluated only in air, three different environments, water, air, and dry air, have been used to study the cyclic fatigue. It was established that under cyclic fatigue the environment plays an important role and humidity significantly facilitate crack growth in ZrB2-30wt%SiC. The fractography of selected ZrB2-30wt%SiC samples was performed and it was established that both defects introduced during machining as well as larger defects introduced during the processing served as fracture origins of ceramic composites. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

    Journal Title

    Ceramics International

    Volume

    39

    Issue/Number

    8

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    9187

    Last Page

    9194

    WOS Identifier

    WOS:000325835100084

    ISSN

    0272-8842

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