TY - GEN
T1 - Advanced nanostructure-controlled functionally graded materials employing carbon nanotubes
AU - Estili, Mehdi
AU - Takagi, Kenta
AU - Kawasaki, Akira
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - Capability of multiwalled carbon nanotubes (CNTs) to create in-depth gradients in properties and functionalities of conventional materials has been investigated for the first time. Functionally graded material (FGM) concept has also been employed for the first time to bridge conventional materials to their advanced nanocomposites containing a high concentration of CNTs, which is promising for unexplored yet novel structural, electronic and biomaterial applications. In this study, α-alumina ceramics considered as the most challenging case has been used as the matrix. Bulk, layered, nanostructure-controlled, CNT-based, functionally graded α-alumina ceramics have been fabricated employing a recently established powder processing technology. In-depth gradients in microstructure, grain size and hardness have been successfully achieved in alumina ceramic without cracking, delamination or warping, after homogeneous and gradual incorporation of the CNTs within the alumina ceramic matrix. The FGM approach showed promise to successfully bridge conventional ceramics to their nanocomposites containing a high concentration of CNTs.
AB - Capability of multiwalled carbon nanotubes (CNTs) to create in-depth gradients in properties and functionalities of conventional materials has been investigated for the first time. Functionally graded material (FGM) concept has also been employed for the first time to bridge conventional materials to their advanced nanocomposites containing a high concentration of CNTs, which is promising for unexplored yet novel structural, electronic and biomaterial applications. In this study, α-alumina ceramics considered as the most challenging case has been used as the matrix. Bulk, layered, nanostructure-controlled, CNT-based, functionally graded α-alumina ceramics have been fabricated employing a recently established powder processing technology. In-depth gradients in microstructure, grain size and hardness have been successfully achieved in alumina ceramic without cracking, delamination or warping, after homogeneous and gradual incorporation of the CNTs within the alumina ceramic matrix. The FGM approach showed promise to successfully bridge conventional ceramics to their nanocomposites containing a high concentration of CNTs.
KW - Alumina
KW - Carbon nanotubes
KW - Functionally graded materials
KW - Nanocomposites
KW - Powder technology
KW - Spark plasma sintering
UR - http://www.scopus.com/inward/record.url?scp=75849137619&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=75849137619&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.631-632.225
DO - 10.4028/www.scientific.net/MSF.631-632.225
M3 - Conference contribution
AN - SCOPUS:75849137619
SN - 0878493077
SN - 9780878493074
T3 - Materials Science Forum
SP - 225
EP - 230
BT - Multiscale, Multifunctional and Functionally Graded Materials
PB - Trans Tech Publications Ltd
T2 - 10th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, MM and FGMs
Y2 - 22 September 2008 through 25 September 2008
ER -