Mechanical and thermal properties as a function of matrix composition of all-oxide ceramic matrix composites fabricated by a sequential infiltration process

Title data

Lindner, Felix ; Puchas, Georg ; Wich, Felix ; Hariri, Sanaz ; Schafföner, Stefan:
Mechanical and thermal properties as a function of matrix composition of all-oxide ceramic matrix composites fabricated by a sequential infiltration process.
In: Journal of the European Ceramic Society. Vol. 45 (2025) Issue 3 . - 116978.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2024.116978

Official URL:

Abstract in another language

The microstructural design of matrices for all-oxide ceramic matrix composites (Ox/Ox) with damage tolerant fracture behavior is challenging. Therefore, the potential use of different matrix materials might be limited even though they appear to offer advantageous functional properties, such as thermal insulation or corrosion resistance. In this study, we investigated the hypothesis of simultaneously adjusting mechanical and functional properties by separate matrix phases within and between the fiber bundles in Ox/Ox. A sequential infiltration process was used to manufacture Ox/Ox with an alumina-zirconia matrix phase (high damage tolerance) and a mullite-alumina matrix phase (thermal insulation). The effect on the mechanical and thermal properties was governed by the infiltration sequences. A property combination was achieved for either the mechanical or the thermal behavior. This was due to a shear-induced mixing of the matrix phases during the lamination process, which renders it difficult to achieve distinctly separated matrix phases within the composite.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	Ceramic matrix composites; All-oxide; Prepreg; Slurry infiltration; Lamination process
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	18 Oct 2024 05:56
Last Modified:	19 Feb 2025 07:06
URI:	https://eref.uni-bayreuth.de/id/eprint/90738