Effect of high energy milling on the morphology and compressibility of Mo- 30% Cu composite
DOI:
https://doi.org/10.4013/4969Abstract
The purpose of this work is to analyze the effects of high energy milling on the granulometry, powder morphology and compressibility of Mo-Cu composite. The Mo-Cu composite combines high mechanical strength of Mo with the high thermal and electrical conductivity of Cu. These characteristics are important to heat sink and electrical conductors. The high energy milling produces composite powders with high homogeneity and refines the grain size. The synthesis of Mo-30Cu composite, starting from powders of Mo and Cu, was realized for milling times of 1, 4, 8, 16 and 32 hours. Scanning electron microscopy and laser granulometry were used to follow the influence of milling time on the microstructure. This allowed to observe the morphological evaluation and interaction between the elements of the material produced. The results show that the particle size and compressibility decreased with the milling time, which shows the viability to obtain this composite by the proposed process.
Key words: conventional powder metallurgy, Mo-Cu composite, high energy milling.Downloads
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