Crack healing of ferrosilicochromium-filled polymer-derived ceramic composites

Lorenz Schlier, Zongwen Fu, Joe Harris, Peter Greil, Nahum Travitzky

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study, SiOC/FeSiCr/SiC-ceramics were derived by using polymethylsilsesquioxane as a polymeric precursor and FeSiCr (iron-chromium-silicide) and SiC powders as ceramic fillers in a polymer-extrusion process followed by pyrolytic conversion in a nitrogen atmosphere. The crack healing properties of the ceramic in an oxidising atmosphere were subsequently investigated. The SiOC/FeSiCr/SiC-ceramics showed crack closure and strength recovery behaviour after oxidation treatments in air from 600 to 1300 °C with various holding times from 2 to 1000 min. The crack healing mechanisms at different oxidation temperatures and with various dwell times are discussed.

Original languageEnglish
Pages (from-to)2495-2501
Number of pages7
JournalJournal of the European Ceramic Society
Volume38
Issue number6
DOIs
Publication statusPublished - 1 Jun 2018

Keywords

  • Crack healing
  • Polymer derived ceramics
  • Preceramic polymer
  • Strength recovery

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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