Synthesis of carbon nanotubes by fine Ni particles in Ni3Al foam
-
Yong Liu
, Xiaoyu He , Huiping Tang and Baiyun Huang
Abstract
The reaction of Ni and Al particles may induce the formation of nickel aluminide intermetallics. However, the imcomplete reaction can produce very fine Ni particles, which are dispersed in a porous Ni3Al skeleton. The composite foam structure can then be used in the synthesis of carbon nanotubes (CNTs) at high temperatures. In this work, the process for this new structure, and then for synthesizing CNTs was investigated. Firstly, fine Ni particles in an Ni3Al porous structure formed by incomplete reaction between Ni and Al powder were made. Then, the effect of the addition of foaming agent, NaCl, on the porosity of the porous structure was studied. This showed that the porosity increases sharply with the addition of NaCl, and a porosity as high as 90% was obtained. Multi-walled CNTs were found in the products of catalytic decomposition of methanol by fine Ni particles in the composite foam structure. Finally, the potential applications of this composite foam structure in the low-cost manufacturing of CNTs, micro-channeled reactors and in-situ CNT reinforced composites are discussed.
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© 2011, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Editorial
- Prof. Dr.-Ing. Heinrich Wollenberger — 80 years
- Original Contributions
- Atom probe tomography: from physical metallurgy towards microelectronics
- Accumulation of radiation damage and disordering in MgAl2O4 under swift heavy ion irradiation
- TEM study of irradiation induced copper precipitation in boron alloyed EUROFER97 steel
- Order – disorder transformation in Ni – V alloys under electron irradiation
- Materials issues of the SINQ high-power spallation target
- The origin and development of the P{011}<111> orientation during recrystallization of particle-containing alloys
- Coarsening kinetics of Cu-rich precipitates in a concentrated multicomponent Fe–Cu based steel
- Beyond Ni-based superalloys: Development of CoRe-based alloys for gas turbine applications at very high temperatures
- The effect of heat treatments on the microstructure, texture and mechanical properties of the extruded magnesium alloy ME21
- Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images
- Dislocationless sliding in a polycluster glass
- Evolution of transformation plasticity during bainitic transformation
- Surface tension and viscosity of NiAl catalytic precursor alloys from microgravity experiments
- Synthesis of carbon nanotubes by fine Ni particles in Ni3Al foam
- Fabrication of dielectric thin films by sputtering deposition at different pressures with (Ba0.3Sr0.7)(Zn1/3Nb2/3)O3 ceramic as target
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Editorial
- Prof. Dr.-Ing. Heinrich Wollenberger — 80 years
- Original Contributions
- Atom probe tomography: from physical metallurgy towards microelectronics
- Accumulation of radiation damage and disordering in MgAl2O4 under swift heavy ion irradiation
- TEM study of irradiation induced copper precipitation in boron alloyed EUROFER97 steel
- Order – disorder transformation in Ni – V alloys under electron irradiation
- Materials issues of the SINQ high-power spallation target
- The origin and development of the P{011}<111> orientation during recrystallization of particle-containing alloys
- Coarsening kinetics of Cu-rich precipitates in a concentrated multicomponent Fe–Cu based steel
- Beyond Ni-based superalloys: Development of CoRe-based alloys for gas turbine applications at very high temperatures
- The effect of heat treatments on the microstructure, texture and mechanical properties of the extruded magnesium alloy ME21
- Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images
- Dislocationless sliding in a polycluster glass
- Evolution of transformation plasticity during bainitic transformation
- Surface tension and viscosity of NiAl catalytic precursor alloys from microgravity experiments
- Synthesis of carbon nanotubes by fine Ni particles in Ni3Al foam
- Fabrication of dielectric thin films by sputtering deposition at different pressures with (Ba0.3Sr0.7)(Zn1/3Nb2/3)O3 ceramic as target
- DGM News
- DGM News