Crack healing of ferrosilicochromium-filled polymer-derived ceramic composites. Issue 6 (June 2018)

• Record Type: Journal Article
• Authors: Schlier, Lorenz; Fu, Zongwen; Harris, Joe; Greil, Peter; Travitzky, Nahum
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 6(2018)
• Page Start: 2495
• Page End: 2501
• Publication Date: 2018-06
• Subjects: Preceramic polymer -- Polymer derived ceramics -- Crack healing -- Strength recovery; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2018.01.015
• Languages: English
• ISSNs: 0955-2219

Abstract

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.