Effect of Balls/Powder Weight Ratio in Milling on Microstructure and Properties of MWCNTs/Cu Composites

Abstract:

High energy milling (HEM) was used to the preparation of multi-walled carbon nanotubes reinforced copper matrix (MWCNTs/Cu) composite powders in this paper. And the MWCNTs/Cu composite material was prepared by the cold-press sintering method. The influence law of balls/powder weight ratio to the MWCNTs/Cu composite powders was discussed. Particle size distribution and fracture micrograph were analyzed by XRD and SEM. The results show that particle size distribution of CNTs/Cu composite powders reached a minimum, when the balls/powder weight ratio was 10: 1. The particle size distribution (D50) of CNTs/Cu composite powders was 22.33μm. The CNTs distributes homogeneously , which is in favor of the mechanical combination of the CNTs and Cu substrate. The tensile strength of CNTs/Cu composite reached 189 MPa.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 394-399
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.394
• Online since: April 2014
• Authors: Ming Jun Yu, Xiao Lan Cai*, Lei Zhou, Cui Hu, Zheng Li, Feng Yi
• Keywords: Balls/Powder Weight Ratio, High-Energy Ball Milling (HEM), MWCNT/Cu Composite Powders

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