Abstract
Sm–Fe–N alloys were successfully separated into the metallic component and the slag component by the glass slag method using boron trioxide. X-ray diffraction and magnetic measurements revealed that the metallic component consisted of α-Fe phase and that the slag component consisted of BN and Sm-containing amorphous materials. The chemical analyses confirmed that the Sm content in the metallic component was very limited and the slag component contained a large amount of samarium. The formation of the BN phase was believed to be the reaction between SmN, decomposed from Sm 2Fe 17N 3 phase at high temperatures, and boron trioxide during the glass slag process.
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