Single Walled Carbon Nanotubes Reinforced Intermetallic TiNi Matrix Nanocomposites by Spark Plasma Sintering

Single-walled carbon nanotubes (SWCNTs) were successfully solidified without any additives by hot-pressing and spark plasma sintering (SPS). The elastic modulus and fracture strength of the SWCNT solid prepared by the SPS method were about three and two times higher than that of the hot-pressed SWCNT solid prepared under the same processing condition. The enhancement of the mechanical properties of the SPS specimen may be due to the formation of comparatively stronger bond between SWCNTs, which is possibly brought about by the spark plasma generated in the SPS process.

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Enhancement of Electrical Conductivity of Aluminum-Based Nanocomposite Produced by Spark Plasma Sintering

Nanomaterials ◽

10.3390/nano11051150 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1150

Author(s):

Nicolás A. Ulloa-Castillo ◽

Roberto Hernández-Maya ◽

Jorge Islas-Urbano ◽

Oscar Martínez-Romero ◽

Emmanuel Segura-Cárdenas ◽

...

Keyword(s):

Carbon Nanotubes ◽

Electrical Conductivity ◽

Spark Plasma Sintering ◽

Experimental Tests ◽

Powder Morphology ◽

Plasma Sintering ◽

Multi Walled Carbon Nanotubes ◽

Spark Plasma ◽

Ball Milling Technique ◽

Walled Carbon Nanotubes

This article focuses on exploring how the electrical conductivity and densification properties of metallic samples made from aluminum (Al) powders reinforced with 0.5 wt % concentration of multi-walled carbon nanotubes (MWCNTs) and consolidated through spark plasma sintering (SPS) process are affected by the carbon nanotubes dispersion and the Al particles morphology. Experimental characterization tests performed by scanning electron microscopy (SEM) and by energy dispersive spectroscopy (EDS) show that the MWCNTs were uniformly ball-milled and dispersed in the Al surface particles, and undesirable phases were not observed in X-ray diffraction measurements. Furthermore, high densification parts and an improvement of about 40% in the electrical conductivity values were confirmed via experimental tests performed on the produced sintered samples. These results elucidate that modifying the powder morphology using the ball-milling technique to bond carbon nanotubes into the Al surface particles aids the ability to obtain highly dense parts with increasing electrical conductivity properties.

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A novel sintered multi-walled carbon nanotubes bone material by spark plasma sintering method

International Journal of Oral and Maxillofacial Surgery ◽

10.1016/s0901-5027(05)81203-2 ◽

2005 ◽

Vol 34 ◽

pp. 83

Author(s):

W. Wang ◽

A. Yokoyama ◽

M. Omori ◽

S. Liao ◽

Y. Zhu ◽

...

Keyword(s):

Carbon Nanotubes ◽

Spark Plasma Sintering ◽

Bone Material ◽

Plasma Sintering ◽

Multi Walled Carbon Nanotubes ◽

Spark Plasma ◽

Walled Carbon Nanotubes ◽

Sintering Method

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Reinforcement of B4C Ceramics with Multi-Walled Carbon Nanotubes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.66.41 ◽

2009 ◽

Vol 66 ◽

pp. 41-44 ◽

Cited By ~ 6

Author(s):

Fan Zhang ◽

Zheng Yi Fu ◽

Jin Yong Zhang ◽

Hao Wang ◽

Wei Min Wang ◽

...

Keyword(s):

Mechanical Property ◽

Carbon Nanotubes ◽

Fracture Toughness ◽

Composite Materials ◽

Grain Boundaries ◽

Spark Plasma Sintering ◽

Plasma Sintering ◽

Multi Walled Carbon Nanotubes ◽

Spark Plasma ◽

Walled Carbon Nanotubes

Here we have prepared B4C/CNTs composites using the spark-plasma sintering (SPS) method. Mechanical property measurements reveal obvious enhancement confirming the fabrication of true B4C/CNTs composite materials with improved toughness properties.The addition of 1wt% CNTs in the B4C increased the fracture toughness by about 1.6 times from 2.5 to 4 MPa.m1/2 because the CNTs presented at the B4C grain boundaries, made the length of cracks shorten.

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Spark Plasma Sintering of Aluminum-Based Powders Reinforced with Carbon Nanotubes: Investigation of Electrical Conductivity and Hardness Properties

Materials ◽

10.3390/ma14020373 ◽

2021 ◽

Vol 14 (2) ◽

pp. 373

Author(s):

Nicolás A. Ulloa-Castillo ◽

Oscar Martínez-Romero ◽

Roberto Hernandez-Maya ◽

Emmanuel Segura-Cárdenas ◽

Alex Elías-Zúñiga

Keyword(s):

Carbon Nanotubes ◽

Crystallite Size ◽

Spark Plasma Sintering ◽

Surface Hardness ◽

Composite Surface ◽

Plasma Sintering ◽

Hardness Tests ◽

Multi Walled Carbon Nanotubes ◽

Spark Plasma ◽

Walled Carbon Nanotubes

This paper focuses on reporting results obtained by the spark plasma sintering (SPS) consolidation and characterization of aluminum-based nanocomposites reinforced with concentrations of 0.5 wt%, 1 wt% and 2 wt% of single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs). Experimental characterization performed by SEM shows uniform carbon nanotube (CNT) dispersion as well as carbon clusters located in the grain boundary of the Al matrix. The structural analysis and crystallite size calculation were performed by X-ray diffraction tests, detecting the characteristic CNT diffraction peak only for the composites reinforced with MWCNTs. Furthermore, a considerable increment in the crystallite size value for those Al samples reinforced and sintered with 1 wt% of CNTs was observed. Hardness tests show an improvement in the composite surface hardness of about 11% and 18% for those samples reinforced with 2 wt% of SWNCTs and MWCNTs, respectively. Conductivity measurements show that the Al samples reinforced with 2 wt% of MWCNTs and with 0.5 wt% SWCNTs reach the highest IACS values of 50% and 34%, respectively.

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