'Association of Metallurgical Engineers of Serbia'
Abstract
Rare earth cobalt alloys have many special magnetic properties and can be used to prepare magnetic and magneto-optical components. The yttrium - cobalt intermetallic compounds are prepared by calciothermic reduction - diffusion (CRD) process at temperature of 1000 ºC, under argon atmosphere. Yttrium oxide, metallic cobalt powder, metallic calcium are used as raw materials in this process. Calcium acts as the reductant, which is used to prepare the YCo5 magnetic material. XRD, SEM, EDAX and some thermodynamic valuation have been carried out on the products. The chemical reactions controlled by unreacted core model theory were studied. http://dx.doi.org/10.5937/metmateng1401035
