scholarly journals Fabrication And Properties Of Silver Based Multiwall Carbon Nanotube Composite Prepared By Spark Plasma Sintering Method

2015 ◽  
Vol 60 (2) ◽  
pp. 1351-1355 ◽  
Author(s):  
M. Lis ◽  
A. Wrona ◽  
J. Mazur ◽  
C. Dupont ◽  
M. Kamińska ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Chemical Reduction ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon Nanotube ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method ◽  
Multiwall Carbon

Abstract The paper presents results of investigations of the obtained nanocomposite materials based on silver with addition of multiwall carbon nanotubes. The powder of carbon nanotubes content from 0.1 to 3 wt. % was produced by application of powder metallurgy methods, through mixing and high-energetic milling, and also chemical methods. Modification of carbon nanotubes included electroless deposition of silver particles on the carbon nanotube active surfaces and chemical reduction with strong reducing agent – sodium borohydride (NaBH4). The obtained powder mixtures were consolidated by SPS – Spark Plasma Sintering method. The formed composites were subjected to tests of relative density, electrical conductivity and electro-erosion properties. Detailed examinations of the structure with application of X-ray microanalysis, with consideration of carbon nanotubes distribution, were also carried out. The effect of manufacturing methods on properties of the obtained composites was observed.

Thermal conductivity and flammability of multiwall carbon nanotube/polyurethane foam composites

2016 ◽  
Vol 53 (2) ◽  
pp. 215-230 ◽  
Author(s):  
JJ Espadas-Escalante ◽  
F Avilés ◽  
PI Gonzalez-Chi ◽  
AI Oliva
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Polyurethane Foam ◽  
Fire Behavior ◽  
Multiwall Carbon Nanotubes ◽  
Propagation Speed ◽  
Interfacial Thermal Resistance ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon

The thermal conductivity and fire response of multiwall carbon nanotube/polyurethane foam composites are investigated for ∼45 kg/m3 foams with multiwall carbon nanotube concentrations of 0.1, 1, and 2 wt.%. The thermal conductivity of such nanocomposites shows a modest increase with increased multiwall carbon nanotube content, which is explained by a high value of interfacial thermal resistance, as predicted by existent thermal models. A strong correlation between multiwall carbon nanotube content, foam’s cellular morphology, and fire behavior was observed. The flame propagation speed increases with the addition of 0.1 wt.% multiwall carbon nanotubes and then reduces as the multiwall carbon nanotube content increases. The mass lost after flame extinction reduces with the addition of multiwall carbon nanotubes, suggesting an increased resistance to flame attack due the multiwall carbon nanotube presence.

scholarly journals Fabrication and Thermal Properties of Carbon Nanotube/Nickel Composite by Spark Plasma Sintering Method

2007 ◽  
Vol 48 (9) ◽  
pp. 2506-2512 ◽  
Author(s):  
Shunsuke Yamanaka ◽  
Ryohei Gonda ◽  
Akira Kawasaki ◽  
Hiroki Sakamoto ◽  
Yutaka Mekuchi ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

scholarly journals Fabrication and Thermal Evaluation of Carbon Nanotube/Aluminium composite by Spark Plasma Sintering Method

2006 ◽  
Vol 53 (12) ◽  
pp. 965-970 ◽  
Author(s):  
Shunsuke Yamanaka ◽  
Hokuto Kadokura ◽  
Akira Kawasaki ◽  
Hiroki Sakamoto ◽  
Yutaka Mekuchi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Spark Plasma Sintering ◽  
Aluminium Composite ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

scholarly journals Effect Of Carbon Nanotubes On The Properties Of Spark Plasma Sintered ZrO2/CNT Composites

2015 ◽  
Vol 60 (2) ◽  
pp. 1315-1318 ◽  
Author(s):  
D.H. Shim ◽  
S.S. Jung ◽  
H.S. Kim ◽  
H. Cho ◽  
J.K. Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Flexural Strength ◽  
Multiwall Carbon Nanotubes ◽  
Wear Properties ◽  
Plasma Sintering ◽  
Close Relationship ◽  
Spark Plasma ◽  
Friction And Wear Properties ◽  
Multiwall Carbon

Abstract Zirconia matrix ZrO2/CNT composite materials reinforced with multiwall carbon nanotubes were fabricated using a spark plasma sintering technique. The effects of the amount of CNTs addition, sintering temperature and sintering pressure on the properties of the resulting ZrO2/CNT composites were examined. 0 to 9 vol. % CNTs were dispersed in zirconia powder, and the resulting mixture was sintered. The electrical conductivity, hardness, flexural strength, and density were measured to characterize the composites. The friction and wear properties of the composites were also tested. The flexural strength and friction coefficient of the composites were improved with up to 6 vol.% of CNT addition and the flexural strength showed a close relationship with the relative density of the composite. The electrical conductivity increased with increasing proportion of the CNTs, but the efficiency was reduced at more than 6 vol.% CNTs.

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