Bio-inspired crack self-healing of SiC/spinel nanocomposite

Fariborz Tavangarian; Guoqiang Li

doi:10.1016/j.ceramint.2014.10.103

Bio-inspired crack self-healing of SiC/spinel nanocomposite

Fariborz Tavangarian
, Guoqiang Li

School of Science, Engineering & Technology (Harrisburg)

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	2828-2835
Number of pages	8
Journal	Ceramics International
Volume	41
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2014.10.103
State	Published - Mar 1 2015

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2014.10.103

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title = "Bio-inspired crack self-healing of SiC/spinel nanocomposite",

abstract = "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.",

author = "Fariborz Tavangarian and Guoqiang Li",

note = "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: {\textcopyright} 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",

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doi = "10.1016/j.ceramint.2014.10.103",

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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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JO - Ceramics International

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Bio-inspired crack self-healing of SiC/spinel nanocomposite

Abstract

All Science Journal Classification (ASJC) codes

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