Effect of CNT Addition on the Characteristics of Cu-Ni/CNT Nanocomposite

In this study, cu50-ni50 alloy were synthesized by mechanicalalloying. the alloy was then reinforced by dispersion of multiwalledcarbon nanotubes using a planetary high energy ball mill. x-raydiffraction, scanning electron microscopy and vibrating samplemagnetometer were used to evaluate the effects of cnt addition onthe characteristics of the nanocomposites. xrd results of cu-nisample showed that, the homogeneous cu50-ni50 alloy with a meancrystallite size of 25 nm was formed after 10 h of milling. it wasfound that presence of cnts and the stage of cnt addition can alterthe phase composition, morphology and magnetic properties of thenanocomposites. also, cnts prevent the complete dissolution ofnickel in copper and change the chemical composition of the alloy.sem micrographs revealed that the addition of cnts caused asignificant reduction of powder particle size. more ever, thedistribution of cnts in the matrix decreases the saturationmagnetization and increases the coercivity of the nanocomposites.