Incorporation of carbon nanotubes into polyethylene by high energy ball milling: Morphology and physical properties

2007 ◽  
Vol 45 (5) ◽  
pp. 597-606 ◽  
Author(s):  
Giuliana Gorrasi ◽  
Maria Sarno ◽  
Antonio Di Bartolomeo ◽  
Diana Sannino ◽  
Paolo Ciambelli ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Physical Properties ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

scholarly journals Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling

2013 ◽  
Vol 45 (2) ◽  
pp. 173-180 ◽  
Author(s):  
V. Cosovic ◽  
M. Pavlovic ◽  
A. Cosovic ◽  
P. Vulic ◽  
M. Premovic ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Physical Properties ◽  
Ball Milling ◽  
Electrical Contact ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Powder Metallurgy Method ◽  
Contact Materials ◽  
Energy Ball ◽  
Electrical Contact Materials

High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92:8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces by conventional powder metallurgy method. The characterization of the prepared samples included microstructural analysis by XRD and SEM, as well as measurements of physical properties such as density, hardness and electrical conductivity. The results of X-Ray analysis point to reduction of crystallite size after milling of about ten times. Microstructures of sintered Ag-SnO2 and Ag-SnO2 In2O3 materials display very fine dispersion of the oxide components in silver matrix. Somewhat higher uniformity was obtained for Ag-SnO2 In2O3 material which was illustrated by results of SEM analysis and more consistent microhardness values. The obtained values of studied physical properties were found to be in accordance with observed higher dispersion of metal oxide particles and comparable to properties of commercial electrical contact materials of this type.

Research the Al Material Reinforced by CNT(Carbon Nanotubes)

2011 ◽  
Vol 694 ◽  
pp. 337-340
Author(s):  
Xiao Lan Cai ◽  
Xiao Fei Wang
Keyword(s):  
Carbon Nanotubes ◽  
Ball Milling ◽  
Rotational Speed ◽  
Milling Time ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Compound Material ◽  
Energy Ball ◽  
Rotary Speed ◽  
Xrd Patterns

This paper using high energy ball milling(HEM), researched the technology of preparation of Al compound material reinforced by CNT. Researched the different milling time, rotary speed, amount of CNT and sinter technology on properties of hardness and density. Preparation the Al-CNT at milling time about 30 to 100 min, rotational speed is about 300-600/rpm.the wt% of CNT is 0-5%, Analyzed the XRD patterns、SEM and STM micrograph, the results showed the Al material could be reinforced by CNT using HEM. the hardness of Al-CNT is 75 HB and the density is 2.65 g/cm3 when milling 90 min and CNT 3%.

Synthesis, Characterization, and ECAP Consolidation of Carbon Nanotube Reinforced AA 4032 Nanocrystalline Composites Produced by High Energy Ball Milling

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
M. S. Senthil Saravanan ◽  
S. P. Kumaresh Babu
Keyword(s):  
Carbon Nanotubes ◽  
Crystallite Size ◽  
Ball Milling ◽  
Base Alloy ◽  
Arc Discharge ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Nanocrystalline Powders ◽  
Peak Broadening ◽  
Energy Ball

In the present work, multiwalled carbon nanotubes (MWNTs) were synthesized by electric arc discharge method in open air atmosphere. The synthesized nanotubes were subjected to multistep purification followed by characterization using Raman spectroscopy and transmission electron microscopy (TEM). These carbon nanotubes (CNTs) have inner and outer diameters of the order of 3.5 nm and 16 nm with an aspect ratio of 63. AA 4032 nanocomposites reinforced with MWNTs were produced by high energy ball milling using elemental powder mixtures. X-ray diffraction (XRD) and scanning electron microscope (SEM) studies showed different phases of composite with and without CNTs. The crystallite size and lattice strain were calculated using an anisotropic model of Williamson–Hall peak broadening analysis, which showed in decreased crystallite size with increasing milling time. TEM studies reveal that the MWNTs were uniformly distributed in the matrix. Thermal stability of the nanocrystalline powders was studied using a differential thermal analyzer (DTA). The mechanically alloyed powders were consolidated using a novel method called equal channel angular pressing (ECAP) at room temperature. The consolidated samples were sintered at 480 °C in argon atmosphere for 90 min. ECAP method was investigated as an alternative to conventionally sintered powder composites. CNT addition has shown significant improvement in the hardness of the system, even though the observed density is relatively low compared with a base alloy. Thus, the results show that ECAP enables sufficient shear deformation results in good metallurgical bonds between particles at lower compaction pressures. Hence, it is proven that ECAP can be effectively used as one of the consolidation technique especially for powders that are difficult to consolidate by other means.

Hydrogen in Metallic Nanostructures

2007 ◽  
Vol 555 ◽  
pp. 327-334 ◽  
Author(s):  
R.A. Andrievski
Keyword(s):  
Physical Properties ◽  
Crystallite Size ◽  
Ball Milling ◽  
High Energy ◽  
Structural Features ◽  
Metallic Nanostructures ◽  
High Energy Ball Milling ◽  
Universal Method ◽  
Characterization Methods ◽  
Energy Ball

Features of hydrogen nanostructure synthesis are described as applied to metals (Mg and Pd) and intermetallics (Mg2Ni, FeTi and LaNi5). Attention is focused on the high-energy ball milling as a universal method for hydrogen nanostructure preparation. The effect of crystallite size, absorption/desorption properties of Pd - H2, Mg2Ni - H2, TiFe - H2 and Mg - H2 systems are characterized in detail. Structural features and some physical properties of nanohydrides studied by different independent characterization methods are considered.

Preparation of CNT/AlSi10Mg composite powders by high-energy ball milling and their physical properties

2016 ◽  
Vol 23 (3) ◽  
pp. 330-338 ◽  
Author(s):  
Lin-zhi Wang ◽  
Ying Liu ◽  
Wen-hou Wei ◽  
Xu-guang An ◽  
Tao Zhang ◽  
...  
Keyword(s):  
Physical Properties ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Composite Powders ◽  
Energy Ball
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