Ultra-low density three-dimensional nano-silicon carbide architecture with high temperature resistance and mechanical strength

Silicon carbide nanotube/nanowires (SiCNT/NWs) exhibit excellent mechanical properties in extreme thermal and oxidative environments. Here, we demonstrate an easily scalable process to synthesize millimeter-sized three-dimensional architectures using SiCNT/NW building blocks to create materials with...

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Published inCarbon (New York) Vol. 164; pp. 143 - 149
Main Authors Hart, Amelia H.C., Owuor, Peter Samora, Hamel, John, Bhowmik, Sanjit, Asif, S.A. Syed, Gentles, Anieph X., Ozden, Sehmus, Tsafack, Thierry, Keyshar, Kunttal, Mital, Rahul, Hurst, Janet, Vajtai, Robert, Tiwary, Chandra Sekhar, Ajayan, Pulickel M.
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 30.08.2020
Elsevier BV
Subjects
3D architectures
Carbon nanotubes
Chemical synthesis
Construction materials
Conversion
Density
Extreme environments
Graphene
High temperature
In-situ mechanical testing
Mechanical properties
Nanotubes
Nanowires
Shape memory
Silicon carbide
Silicon carbide nanowires
Stiffness
Thermal stability
3D architectures
Carbon nanotubes
Silicon carbide nanowires
In-situ mechanical testing
Thermal stability
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Summary:Silicon carbide nanotube/nanowires (SiCNT/NWs) exhibit excellent mechanical properties in extreme thermal and oxidative environments. Here, we demonstrate an easily scalable process to synthesize millimeter-sized three-dimensional architectures using SiCNT/NW building blocks to create materials with excellent mechanical strength, stiffness, and resiliency with ultra-low density. The structure of these macro-materials is initially synthesized using carbon nanotubes, then utilizing the shape memory synthesis (SMS) method are converted to nano-silicon carbide. It is proposed that using this technique, any micro-structure can initially be created with nano-carbon building blocks, optimized for the necessary morphological features of a specific application. Here, the synthesis and subsequent SiCNT/NW conversion of carbon nanotube spheres and graphene foam, demonstrates the ability to use a simple, cost-effective conversion method to create a material that can mechanically perform in extreme environments. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2020.03.045