Abstract
The evolution of the Al2O3/Ni (25% vol. Ni) composite powders, during the milling and the stability of the composite phases were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray microanalysis (EDX). SEM images show a high level of homogenization of the Ni and Al2O3 phases for milling times larger than 120 minutes. The X-ray study indicates no reaction between the two phases. The crystallite grain size decreases with the milling time for both phases.
Highlights
Ceramic particles are combined with metallic powders in order to improve some mechanical properties of ceramics
The Al2O3/Ni nanocomposite powders are employed in aerospace, naval, automotive industries and so on
This paper studied the obtaining and characterization of alumina and nickel nanocomposite powders by mechanical milling
Summary
Ceramic particles are combined with metallic powders in order to improve some mechanical properties of ceramics. This paper studied the obtaining and characterization of alumina and nickel nanocomposite powders by mechanical milling. The particle size distributions presented in figure 1 show a change in the particle size from the starting powder (before milling) to composite powder milled for 180 minutes.
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