Synergic influence of MWCNTs and SiC nanoparticles on the microstructure and properties of Al2O3 ceramic hybrid nanocomposites

Iftikhar Ahmad; Sharjeel Ahmed; Tayyab Subhani; Khalid Saeed; Mohammad Islam; Nannan Wang; Yanqiu Zhu

doi:10.1016/j.cap.2016.10.009

Synergic influence of MWCNTs and SiC nanoparticles on the microstructure and properties of Al₂O₃ ceramic hybrid nanocomposites

Iftikhar Ahmad, Sharjeel Ahmed, Tayyab Subhani, Khalid Saeed, Mohammad Islam, Nannan Wang, Yanqiu Zhu

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

29 Citations (Scopus)

Abstract

Synergic role of 2 wt% MWCNTs and 5 wt% SiC nanoparticles on the structure and properties of the hybrid alumina nanocomposites fabricated through fast sintering route was studied. The hybrid nanocomposite demonstrated fourfold reduced grain size with substantial improvement in fracture toughness (110%) and hardness (30%) against bench-marked monolithic Al₂O₃. Fine-grained microstructure and the harder SiC nanoparticles led hybrid nanocomposite to superior hardness while better toughness was attributed to the synergic toughening mechanisms induced by the 0D SiC nanoparticles and 1D MWCNTs. The stability of MWCNTs and SiC nanoparticles and their interfaces with Al₂O₃ matrix were appraised by combined electron microscopes.

Original language	English
Pages (from-to)	1649-1658
Number of pages	10
Journal	Current Applied Physics
Volume	16
Issue number	12
DOIs	https://doi.org/10.1016/j.cap.2016.10.009
Publication status	Published - 1 Dec 2016
Externally published	Yes

Keywords

AlO
Carbon nanotubes
Electron microscopy
Nanocomposite
Toughness

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10.1016/j.cap.2016.10.009

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title = "Synergic influence of MWCNTs and SiC nanoparticles on the microstructure and properties of Al2O3 ceramic hybrid nanocomposites",

abstract = "Synergic role of 2 wt% MWCNTs and 5 wt% SiC nanoparticles on the structure and properties of the hybrid alumina nanocomposites fabricated through fast sintering route was studied. The hybrid nanocomposite demonstrated fourfold reduced grain size with substantial improvement in fracture toughness (110%) and hardness (30%) against bench-marked monolithic Al2O3. Fine-grained microstructure and the harder SiC nanoparticles led hybrid nanocomposite to superior hardness while better toughness was attributed to the synergic toughening mechanisms induced by the 0D SiC nanoparticles and 1D MWCNTs. The stability of MWCNTs and SiC nanoparticles and their interfaces with Al2O3 matrix were appraised by combined electron microscopes.",

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AU - Ahmad, Iftikhar

AU - Ahmed, Sharjeel

AU - Subhani, Tayyab

AU - Saeed, Khalid

AU - Islam, Mohammad

AU - Wang, Nannan

AU - Zhu, Yanqiu

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Synergic role of 2 wt% MWCNTs and 5 wt% SiC nanoparticles on the structure and properties of the hybrid alumina nanocomposites fabricated through fast sintering route was studied. The hybrid nanocomposite demonstrated fourfold reduced grain size with substantial improvement in fracture toughness (110%) and hardness (30%) against bench-marked monolithic Al2O3. Fine-grained microstructure and the harder SiC nanoparticles led hybrid nanocomposite to superior hardness while better toughness was attributed to the synergic toughening mechanisms induced by the 0D SiC nanoparticles and 1D MWCNTs. The stability of MWCNTs and SiC nanoparticles and their interfaces with Al2O3 matrix were appraised by combined electron microscopes.

AB - Synergic role of 2 wt% MWCNTs and 5 wt% SiC nanoparticles on the structure and properties of the hybrid alumina nanocomposites fabricated through fast sintering route was studied. The hybrid nanocomposite demonstrated fourfold reduced grain size with substantial improvement in fracture toughness (110%) and hardness (30%) against bench-marked monolithic Al2O3. Fine-grained microstructure and the harder SiC nanoparticles led hybrid nanocomposite to superior hardness while better toughness was attributed to the synergic toughening mechanisms induced by the 0D SiC nanoparticles and 1D MWCNTs. The stability of MWCNTs and SiC nanoparticles and their interfaces with Al2O3 matrix were appraised by combined electron microscopes.

KW - AlO

KW - Carbon nanotubes

KW - Electron microscopy

KW - Nanocomposite

KW - Toughness

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Synergic influence of MWCNTs and SiC nanoparticles on the microstructure and properties of Al₂O₃ ceramic hybrid nanocomposites

Abstract

Keywords

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