Preparation and Properties of Carbon Nanotubes Reinforced Cu Matrix Composites for Electronic Packaging Application

2013 ◽  
Vol 275-277 ◽  
pp. 1789-1793 ◽  
Author(s):  
Long Shan Xu ◽  
Xiao Hua Chen ◽  
Xing Jun Liu
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Packaging ◽  
Pure Copper ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Composite Powders ◽  
Multi Walled Carbon Nanotube ◽  
The Matrix ◽  
Copper Composite ◽  
Copper Nanocomposites

Multi-walled carbon nanotube (MWCNT) reinforced copper nanocomposites were prepared using a unique spherical MWCNT-implanted copper composite powders. The MWCNTs are homogenously ‘locked’ in the composite and tightly bonded to the matrix, which makes them play excellent reinforcement role on the microhardness compared with the unreinforced pure copper. Although the thermal conductivity is not enhanced for the thermal resistance between the carbon nanotubes and the copper matrix; it is still high enough to be used as electronic packaging materials even the concentration of MWCNTS in the composite is up to 5 wt%. Furthermore, the thermal expansion of the composites decreased apparently with the addition of the carbon nanotubes.

Experimental Investigation on Thermal Conduction of Carbon Nanotubes Reinforced Copper Matrix Composites

2014 ◽  
Vol 564 ◽  
pp. 455-460
Author(s):  
Faiz Ahmad ◽  
Muhammad Aslam ◽  
M. Rafi Raza ◽  
Ali S. Muhsan ◽  
M.irfan Shirazi
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Sintered Density ◽  
Pure Copper ◽  
Copper Particle ◽  
Copper Matrix ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Electron Microscopic ◽  
Scanning Electron

The performance of the micro-chip is affected by overheating and hence reduces the efficiency of electronic devices. The development of high thermal conductivity material can solve problems associated with dissipation of heat from the micro-chips. Thermal conductivity for carbon nanotubes (CNTs) are in the ranges of 1200-3000 W/moK which considered as the best candidate material for heat sink applications. This research investigates the fabrication of CNTs reinforced copper composites using powder metallurgy method. Copper powder and CNTs were ball milled to prepare mixtures and compacted at 600 MPa to fabricate test samples. The compacted test samples were sintered in argon atmosphere at 850oC. Sintered density of CNTs/Cu composites was measured and compared with theoretical density. Density data showed that 98% sintered density was achieved. Optical and scanning electron microscopic (SEM) examination of sintered compacts showed good grain growth, however porosity was also noted in sintered samples. Field emission scanning electron microscopy (FESEM) showed well dispersion of CNTs in copper matrix and interfacial bonding between copper particle and CNTs. In this experiment, the addition of 2 % vol. CNTs in copper matrix showed 9% increase in thermal conductivity approximately compared to thesintered pure copper.

Fabrication of MWCNT-Reinforced Copper Composite and Thermal Expansion Behavor

2011 ◽  
Vol 694 ◽  
pp. 713-717
Author(s):  
Z. F. Fan ◽  
X.H. Chen ◽  
L.S. Xu ◽  
Y. Q. Liu ◽  
W. B. Zhong ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Cuprous Oxide ◽  
Pure Copper ◽  
Solution Phase ◽  
Mwcnt Content ◽  
Multi Walled Carbon Nanotube ◽  
The Matrix ◽  
Unique Method ◽  
Copper Composite ◽  
Copper Bulk

A unique method for preparation of multi-walled carbon nanotube (MWCNT)- reinforced copper composite is reported. It involves solution phase systhesis MWCNT-implanted cuprous oxide composite spheres, formation of MWCNT/ copper composite spheres after reduction in H2 atmosphere and preparation of the MWCNT/copper bulk with vacuum hot pressing. Scanning Eelectron Microscope image (SEM) of the fracture surfaces indicate MWCNTs are homogeneously dispersed in the composite and bonded to the matrix. In addition, the thermal expansion of the composites at various MWCNTs (0wt%, 1wt%, 5wt%) were investigated. The coefficient of the thermal expansion (CTE) was decreased with increase of the MWCNT content, which are all much lower than that of pure copper.

Exploration Study of Multifunctional Metallic Nanocomposite Utilizing Single-Walled Carbon Nanotubes for Micro/Nano Devices

2005 ◽  
Vol 219 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Quanfang Chen ◽  
Guang Chai ◽  
Bo Li
Keyword(s):  
Carbon Nanotubes ◽  
Energy Transport ◽  
Metallic Matrix ◽  
Building Blocks ◽  
Copper Matrix ◽  
Interfacial Bonding ◽  
Single Walled Carbon ◽  
The Matrix ◽  
Raman Scattering Spectra ◽  
Multifunctional Properties

Carbon nanotubes (CNTs) are excellent multifunctional materials in terms of mechanical robustness, thermal, and electrical conductivities. These multifunctional properties, as well as the small size of the structures, make CNTs ideal building blocks in developing nanocomposites. However, the matrix materials and the fabrication processes are critical in achieving the expected multifunctional properties of a CNT-reinforced nanocomposite. This paper has proved that electrochemical co-deposition of a metallic nanocomposite is a good approach for achieving good interfacial bonding between CNTs and a metallic matrix. Good interfacial bonding between a single-walled carbon nanotube (SWCNT) and a copper matrix has been verified by enhanced fracture toughness (increased stickiness) and a shift in the Raman scattering spectra. For the Cu/SWCNT nanocomposite, the radial breath mode (RBM) has disappeared and the tangential or G-band has shifted and widened, which is an indication of better energy transport.

A Novel Way to Fabricate Carbon Nanotubes Reinforced Copper Matrix Composites by Friction Stir Processing

2011 ◽  
Vol 391-392 ◽  
pp. 524-529 ◽  
Author(s):  
Wen Liang Chen ◽  
Chun Ping Huang ◽  
Li Ming Ke
Keyword(s):  
Carbon Nanotubes ◽  
Grain Size ◽  
Friction Stir Processing ◽  
Copper Matrix ◽  
Parent Material ◽  
Experimental Results ◽  
Matrix Composites ◽  
Small Decrease ◽  
Copper Matrix Composites ◽  
Friction Stir

Carbon nanotubes(CNTs) reinforced copper matrix composites were successfully produced by Friction Stir Processing (FSP). The effect of applying multiple FSP passes on the forming of composites was studied, the microstructure, microhardness and conductivity of the good forming composite were analyzed. The experimental results showed that CNTs uniformly distributed and good forming composite can be obtained by three FSP passes. Compared to the parent material, the grain size of the composite has significantly refined, and the microhardness of the composite has also greatly improved, but the conductivity of the composite has a small decrease.

High-temperature mechanical behavior of Al-Cu matrix composites containing diboride particles

2014 ◽  
Vol 21 (1) ◽  
pp. 29-38
Author(s):  
Oscar Marcelo Suárez ◽  
Natalia Cortes-Urrego ◽  
Sujeily Soto-Medina ◽  
Deborah Marty-Flores
Keyword(s):  
High Temperature ◽  
Aluminum Matrix ◽  
Copper Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Compression Creep ◽  
The Matrix ◽  
Material Creep ◽  
Copper Matrix Composite ◽  
Composite Hardness

AbstractAn aluminum-copper matrix composite reinforced with aluminum diboride particles was studied at high temperature via thermomechanometry experiments. The matrix contained 2 wt% Cu, whereas the amount of boron forming AlB2 ranged from 0 to 4 wt%, i.e., 0 to 8.31 vol% of diboride particles. In the first segment of the research, we demonstrated that larger amounts of AlB2 particles raised the composite hardness even at 300°C. To assess the material creep behavior, another set of specimens were tested under 1 N compression at 400°C and 500°C for 12 h. Higher levels of AlB2 allowed the composites to withstand compression creep deformations at those temperatures. By using existing creep models developed for metal matrix composites we were able to determine that viscous slip deformation was the dominant deformation mechanism for the temperatures and stress levels used in our experiments. Additionally, the computed creep activation energy for these aluminum matrix composites were found comparable to the energies reported for other similar materials, for instance, Al/SiCp composites.

Characterization of Mechanical Properties of Carbon Nanotubes in Copper-Matrix Nanocomposites

2006 ◽  
Author(s):  
Seunghyun Baik ◽  
Byeongsoo Lim ◽  
Bumjoon Kim ◽  
Untae Sim ◽  
Seyoung Oh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Pure Copper ◽  
Copper Matrix ◽  
Mixing Process ◽  
Mechanical Mixing ◽  
Matrix Nanocomposites ◽  
Coated Carbon

Carbon nanotubes have received considerable attention because of their excellent mechanical properties. In this study, carbon nanotube - copper composites have been sintered by a mechanical mixing process. The interfacial bonding between nanotubes and the copper matrix was improved by coating nanotubes with nickel. Sintered pure copper samples were used as control materials. The displacement rate of nanotube-copper composites was found to increase at 200°C whereas that of nickel-coated nanotue-copper composites significantly decreased. The incorporation of carbon nanotubes and nickel-coated carbon nanotubes in the copper matrix decreased friction coefficients and increased the time up to the onset of scuffing compared with those of pure copper specimens.

scholarly journals Fabrication and Mechanical Properties of Cnt/6063 Al Composites Prepared by Vacuum Assisted Infiltration Technique Using Cnt-Al Preforms

2012 ◽  
Vol 21 (5) ◽  
pp. 096369351202100 ◽  
Author(s):  
Bedri Onur Kucukyildirim ◽  
Aysegul Akdogan Eker
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Dispersion Strengthening ◽  
Al Composite ◽  
Multi Walled Carbon Nanotube ◽  
The Matrix ◽  
Infiltration Technique ◽  
Al Matrix Composites ◽  
Nano Size

Industrial type multi-walled carbon nanotube (MWCNT) reinforced aluminum (Al) matrix composites are successfully fabricated by vacuum assisted infiltration of Al into the CNTs-Al preform and compressive mechanical properties of these composites are investigated. The compressive properties and hardness of CNT reinforced composites are fairly increased compared with the previous CNT/Al composite studies. Furthermore, our study confirms that the mechanical enhancements of the composites are interrelated with bridging and pulling-out of CNTs in the fracture surfaces. Moreover, the presence of CNTs leads to dispersion strengthening of the matrix because of their nano size.

scholarly journals Enhanced mechanical properties and wear resistance of cold-rolled carbon nanotubes reinforced copper matrix composites

2020 ◽  
Vol 7 (1) ◽  
pp. 015069
Author(s):  
Luong Van Duong ◽  
Nguyen Van Luan ◽  
Nguyen Ngoc Anh ◽  
Tran Bao Trung ◽  
Le Danh Chung ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Wear Resistance ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
Cold Rolled
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