Journal article Open Access

Efficacy of a ZrB2–SiC matrix in protecting C fibres from oxidation in novel UHTCMC materials

Luca Zoli; Diletta Sciti


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    "description": "<p>A series of high-density ceramic composites with carbon fibre content between 40 and 65% and ultra-refractory ceramic matrix was produced by slurry infiltration and hot pressing. The matrix consisted of ZrB2&ndash;10 vol% SiC or ZrB2&ndash;40 vol% SiC ceramic mixtures. Water&ndash;based and polymer&ndash;based routes were tested to analyse the effects on microstructure, mechanical properties and oxidation resistance at 1650 &deg;C in air. Changing the process and/or the processing parameters was found to affect the final composition, the amount of residual porosity, the matrix/fibre adhesion. Composites with nearly fully dense matrix and optimized infiltration of fibre preforms were found to possess the highest strength (240 MPa) and oxidation resistance. Composites with a weak interface and higher porosity in the matrix showed higher toughness (up to 12 MPa m0.5) but were more prone to oxidation and erosion.&nbsp;</p>", 
    "language": "eng", 
    "title": "Efficacy of a ZrB2\u2013SiC matrix in protecting C fibres from oxidation in novel UHTCMC materials", 
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        "title": "NEXT  GENERATION  CERAMIC  COMPOSITES  FOR COMBUSTION  HARSH  ENVIRONMENTS AND SPACE", 
        "acronym": "C3HARME", 
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    "keywords": [
      "carbon", 
      "ZrB2", 
      "Microstructure", 
      "Mechanical properties", 
      "Oxidation resistance"
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    "publication_date": "2017-01-05", 
    "creators": [
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        "affiliation": "CNR-ISTEC, Institute of Science and Technology for Ceramics", 
        "name": "Luca Zoli"
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