Paper Information

Journal:   ADVANCED CERAMICS PROGRESS   FALL 2015 , Volume 1 , Number 3; Page(s) 39 To 43.
 
Paper: 

FABRICATION OF NANOSTRUCTURED CU MATRIX NANOCOMPOSITES BY HIGH ENERGY MECHANICAL MILLING AND SPARK PLASMA SINTERING

 
 
Author(s):  AKBARPOUR M.R.*, LEISI AZAR F., ALIPOUR S.
 
* DEPARTMENT OF MATERIALS ENGINEERING, FACULTY OF ENGINEERING, UNIVERSITY OF MARAGHEH, MARAGHEH, IRAN
 
Abstract: 

Spark plasma sintering (SPS) is a sintering process that is capable of sintering work hardened powders in short times. This technique was used to fabricate bulk Cu and Cu-SiC nanocomposites. Pure Cu and mixed powders of Cu including 4 vol. % of SiC nanoparticles were mechanically alloyed for 25 h and then sintered at 750oC under vacuum condition by SPS method. Microstructures of the materials were characterized using optical and scanning electron microscopes and x-ray diffraction patterns, and mechanical properties were evaluated by micro-hardness tests. The results showed density values of 8.69 and 8.30 g/cm3 and hardness values over 105 and 128 Hv for Cu and its nanocomposite respectively. The addition of nanoparticles retarded Cu matrix grain growth during SPS process and resulted in higher hardness of nanocomposite compared to non-reinforced copper.

 
Keyword(s): NANOCOMPOSITE, HARDNESS, COPPER, SIC, SPARK, PLASMA SINTERING
 
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