CoreShell Structure of TiO2-Coated MWCNTs for Thermal Protection for High-Temperature Processing of Metal Matrix Composites
Joint Authors
Ardila Rodriguez, Laura Angélica
Travessa, Dilermando Nagle
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-11
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The production of metal matrix composites with elevated mechanical properties depends largely on the reinforcing phase properties.
Due to the poor oxidation resistance of multiwalled carbon nanotubes (MWCNTs) as well as their high reactivity with molten metal, the processing conditions for the production of MWCNT-reinforced metal matrix composites may be an obstacle to their successful use as reinforcement.
Coating MWCNTs with a ceramic material that acts as a thermal protection would be an alternative to improve oxidation stability.
In this work, MWCNTs previously functionalized were coated with titanium dioxide (TiO2) layers of different thicknesses, producing a core-shell structure.
Heat treatments at three different temperatures (500°C, 750°C, and 1000°C) were performed on coated nanotubes in order to form a stable metal oxide structure.
The MWCNT/TiO2 hybrids produced were evaluated in terms of thermal stability.
Thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (RS), and X-ray photoelectron spectroscopy (XPS) were performed in order to investigate TiO2-coated MWCNT structure and thermal stability under oxidative atmosphere.
It was found that the thermal stability of the TiO2-coated MWCNTs was dependent of the TiO2 layer morphology that in turn depends on the heat treatment temperature.
American Psychological Association (APA)
Ardila Rodriguez, Laura Angélica& Travessa, Dilermando Nagle. 2018. CoreShell Structure of TiO2-Coated MWCNTs for Thermal Protection for High-Temperature Processing of Metal Matrix Composites. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121524
Modern Language Association (MLA)
Ardila Rodriguez, Laura Angélica& Travessa, Dilermando Nagle. CoreShell Structure of TiO2-Coated MWCNTs for Thermal Protection for High-Temperature Processing of Metal Matrix Composites. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1121524
American Medical Association (AMA)
Ardila Rodriguez, Laura Angélica& Travessa, Dilermando Nagle. CoreShell Structure of TiO2-Coated MWCNTs for Thermal Protection for High-Temperature Processing of Metal Matrix Composites. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121524
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121524