Open AccessEffect of Ball Size on Nanostructured Copper-tungsten Carbide Composite Prepared by Mechanical Alloying
Author(s) -
Mahani Yusoff,
Zuhailawati Hussain
Publication year - 2013
Publication title -
journal of tropical resources and sustainable science/journal of tropical resources and sustainable science
Language(s) - English
Resource type - Journals
eISSN - 2462-2389
pISSN - 2289-3946
DOI - 10.47253/jtrss.v1i2.638
Subject(s) - ball mill , materials science , tungsten carbide , metallurgy , copper , composite number , tungsten , crystallite , carbide , ball (mathematics) , graphite , composite material , mathematical analysis , mathematics
In this study, nanostructured copper tungsten carbide composite was produced by mechanical alloying. Mechanical alloying was carried out by milling of copper (Cu), tungsten (W) and graphite mixture at 40 h with milling speed of 400 rpm in planetary ball mill using two different ball sizes. The crystallite size of the powder milled with 10 mm ball is smaller than 20 mm ball due to higher collision frequency. Lower expansion of Cu lattice was found for the powder milled with 20 mm ball than that of 10 mm ball. The composite obtain by milling with 20 mm ball had produced greater impact energy that facilitated the formation of tungsten carbide (WC).