On the use of TiC as high-temperature healing particles in alumina based composites

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On the use of TiC as high-temperature healing particles in alumina based composites

Journal Article (2016)

Author(s)

S. Yoshioka (TU Delft - (OLD) MSE-1, Yokohama National University, Graduate School of Engineering)

Linda Boatemaa (TU Delft - (OLD) MSE-1)

S Van der ZWAAG (TU Delft - Novel Aerospace Materials)

Wataru Nakao (Yokohama National University)

W.G. Sloof (TU Delft - (OLD) MSE-1)

Research Group

(OLD) MSE-1

DOI related publication

https://doi.org/10.1016/j.jeurceramsoc.2016.06.008

Mechanical properties TiC Self-healing Ceramic matrix composite High-temperature oxidation

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https://resolver.tudelft.nl/uuid:4536bfee-1f02-40b2-8a81-cbaa5e7aff3a

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Publication Year

2016

Language

English

Research Group

(OLD) MSE-1

Issue number

16

Volume number

36

Pages (from-to)

4155-4162

Abstract

We report on the use of TiC particles as high temperature healing agent in alumina based composites. The selection of TiC was based on a theoretical analysis of its high temperature stability in contact with Al₂O₃, its volumetric expansion upon oxidation and the adhesion between the reaction product TiO₂ with Al₂O₃. Fully dense 15 and 30 vol.% TiC-Alumina composites were made by Spark Plasma Sintering. Initial damage was produced by Vickers indentations. The strength recovery was determined for temperatures between 400 and 800 °C. The mechanical measurements were complemented by microstructural characterization of the base material and the healed cracks.

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