Title :
Study of thermal decomposition mechanism of the Fe17Sm 2N3 phase
Author :
Cabral, F.A.O. ; Gama, S. ; de Morais, E. ; Sanjurjo, N.L. ; Rubeiro, C.A. ; Colucci, C.C.
Author_Institution :
Dept. de Fisica, Universidade Federal do Rio Grande do Norte, Natal, Brazil
fDate :
9/1/1996 12:00:00 AM
Abstract :
We studied the high temperature decomposition mechanism for the Fe 17Sm2N phase using several different experimental techniques, as thermomagnetic and thermogravimetric analyses. Our results show that the decomposition occurs in a two step scheme. In the first reaction we hare the formation of SmN and a solid solution of nitrogen in iron. In the second step, this solid solution degases, and we observe the evolution of nitrogen over a broad temperature range
Keywords :
ferromagnetic materials; iron alloys; permanent magnets; pyrolysis; samarium alloys; thermal analysis; Fe17Sm2N3; Fe17Sm2N3 phase; solid solution degases; thermal decomposition mechanism; thermogravimetric analysis; thermomagnetic analysis; two step scheme; Atmospheric measurements; Cooling; Heating; Iron; Nitrogen; Powders; Samarium; Solids; Temperature; Thermal decomposition;
Journal_Title :
Magnetics, IEEE Transactions on
