TY - JOUR
T1 - Bio-inspired crack self-healing of SiC/spinel nanocomposite
AU - Tavangarian, Fariborz
AU - Li, Guoqiang
N1 - Funding Information:
This investigation was partially supported by Cooperative Agreement NNX11AM17A between NASA and the Louisiana Board of Regents under contract NASA/LEQSF (2011-14)-Phase3-05. The authors want to acknowledge the CxC Writing Support at Louisiana State University for their help revising the paper.
Publisher Copyright:
© 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - Crack self-healing behavior of SiC/spinel nanocomposite, obtained from talc, aluminum and graphite powders was evaluated as a function of time, temperature and the environment atmosphere. The mechanism that was involved in the crack-healing was investigated and the outcome revealed both physical and chemical phenomena are involved in the healing process. In the presence of oxygen at high temperatures, SiC reacts with oxygen to form SiO2 which is accompanied with about 80% volume expansion. On the other hand, the formed silica reacts with the matrix and produces some transition compounds which can rebond crack walls together. The results showed that cracks can be completely healed after heat treatment at 1545 °C in static air for only 1 min.
AB - Crack self-healing behavior of SiC/spinel nanocomposite, obtained from talc, aluminum and graphite powders was evaluated as a function of time, temperature and the environment atmosphere. The mechanism that was involved in the crack-healing was investigated and the outcome revealed both physical and chemical phenomena are involved in the healing process. In the presence of oxygen at high temperatures, SiC reacts with oxygen to form SiO2 which is accompanied with about 80% volume expansion. On the other hand, the formed silica reacts with the matrix and produces some transition compounds which can rebond crack walls together. The results showed that cracks can be completely healed after heat treatment at 1545 °C in static air for only 1 min.
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U2 - 10.1016/j.ceramint.2014.10.103
DO - 10.1016/j.ceramint.2014.10.103
M3 - Article
AN - SCOPUS:84919499509
SN - 0272-8842
VL - 41
SP - 2828
EP - 2835
JO - Ceramics International
JF - Ceramics International
IS - 2
ER -