Journal article


Oxidative Crack Healing in Al2O3 Composites Loaded with Ti(2)AC (A = Al, Sn) Repair Fillers


Publication Details
Author(s): Pedimonte B, Bei G, Pourjafar D, Fey T, Greil P
Publisher: Goeller Verlag GmbH
Publication year: 2014
Volume: 5
Pages range: 63-67
ISSN: 2190-9385

Abstract

Crack healing of alumina composites loaded with 5, 10, and 20 vol% Ti(2)AC (A = Al or Sn) MAX phase was investigated. Surface cracks were prepared by means of indent loading and the modulus of rupture was measured on virgin, indented, and healed specimens. The MAX phase particles serve as repair filler which reacts with oxygen penetrating along a surface crack and filling disrupted crack surfaces with the oxidation reaction products. After annealing for 3 h composites loaded with 20 vol /0 Ti(2)A1C showed full recovery at a healing temperature of approximately 900 degrees C, whereas lower temperatures of 700 C were observed for specimens loaded with 10 and 20 vol% Ti2SnC. The enhanced healing response of Ti(2)AC-loaded composites containing Sn instead of Al on the A-position offers high potential for providing crack healing capability to ceramic matrix composites applied at moderate temperatures below 1000 degrees C.



How to cite
APA: Pedimonte, B., Bei, G., Pourjafar, D., Fey, T., & Greil, P. (2014). Oxidative Crack Healing in Al2O3 Composites Loaded with Ti(2)AC (A = Al, Sn) Repair Fillers. Journal of Ceramic Science and Technology, 5, 63-67. https://dx.doi.org/10.4416/JCST2013-00044

MLA: Pedimonte, Birgit, et al. "Oxidative Crack Healing in Al2O3 Composites Loaded with Ti(2)AC (A = Al, Sn) Repair Fillers." Journal of Ceramic Science and Technology 5 (2014): 63-67.

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