TY - JOUR
T1 - Extrusion of spark plasma sintered aluminum-carbon nanotube composites at various sintering temperatures
AU - Kwon, Hansang
AU - Kawasaki, Akira
PY - 2009/11/1
Y1 - 2009/11/1
N2 - The combined processes of spark plasma sintering and hot extrusion were used to fabricate a multi-walled carbon nanotube (MWCNT) reinforced aluminum (Al) matrix composite. The structural defects of carbon nanotubes (CNT) at various sintering temperatures were investigated by Raman spectroscopy. A small amount of Al liquid phase was generated and it reacted with disordered CNTs, even during the solid-state spark plasma sintering process. The influence of Al carbides generated by the reaction between Al and disordered CNTs is discussed from a microstructural viewpoint and in relation to tensile strength. We conclude that structurally controlled CNTs could potentially be attractive for metal matrix applications, and could significantly improve the mechanical properties of AI-CNT composites.
AB - The combined processes of spark plasma sintering and hot extrusion were used to fabricate a multi-walled carbon nanotube (MWCNT) reinforced aluminum (Al) matrix composite. The structural defects of carbon nanotubes (CNT) at various sintering temperatures were investigated by Raman spectroscopy. A small amount of Al liquid phase was generated and it reacted with disordered CNTs, even during the solid-state spark plasma sintering process. The influence of Al carbides generated by the reaction between Al and disordered CNTs is discussed from a microstructural viewpoint and in relation to tensile strength. We conclude that structurally controlled CNTs could potentially be attractive for metal matrix applications, and could significantly improve the mechanical properties of AI-CNT composites.
KW - Carbon nanotube (CNT)
KW - Hot extrusion
KW - Metal matrix composites
KW - Powder processing
KW - Spark plasma sintering (SPS)
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U2 - 10.1166/jnn.2009.1357
DO - 10.1166/jnn.2009.1357
M3 - Article
C2 - 19908562
AN - SCOPUS:70350312802
VL - 9
SP - 6542
EP - 6548
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 11
ER -