Archives of Metallurgy and Materials

Abstract

Recently, since the demand of rare earth permanent magnet for high temperature applications such as an electric motor has increased, dysprosium (Dy), a heavy rare earth element, is becoming important due to severe bias in its production. To fulfill the increasing need of Dy, recycling offers as a promising alternative. In recycling of rare earths, Hydro-metallurgical extraction method is mainly used however it has adverse environmental effects. Liquid metal extraction on the other hand, is an eco-friendly and simple method as far as the reduction of rare earth metal oxide is concerned. Therefore, liquid metal extraction was studied in this research as an alternative to the hydro-metallurgical recycling method. Magnesium (Mg) is selected as solvent metal because it doesn't form intermetallic compounds with Fe, B and has a low melting and low boiling point. Extraction behavior of Dy in (Nd,Dy)-Fe-B magnet is observed and effect of Mg ratio on extraction of Dy is confirmed.

Influence of Chemical Composition on the Curie Temperature Change in Amorphous Alloys

“…In many industries, great emphasis is placed on introducing better and better materials with specific properties into products. Both materials exhibiting the so-called soft magnetic properties [1,2] and hard magnetic properties [3][4][5] are desirable. Due to the constantly growing progress in the field of electronics and electrical engineering, materials with good magnetic properties that can be used as transformer cores or chokes are of particular interest [5][6][7].…”