THE EFFECTS OF HYDROGEN DISPROPORTIONATION, DESORPTION, AND RECOMBINATION ON THE STRUCTURE AND MAGNETIC-PROPERTIES OF SM2FE17NX AND NDFE10MO2NX COMPOUNDS
J. Yang et al., THE EFFECTS OF HYDROGEN DISPROPORTIONATION, DESORPTION, AND RECOMBINATION ON THE STRUCTURE AND MAGNETIC-PROPERTIES OF SM2FE17NX AND NDFE10MO2NX COMPOUNDS, Journal of applied physics, 76(10), 1994, pp. 6053-6055
Hydrogen disproportionation, desorption, and recombination (HDDR) has
been used as a pretreatment to prepare high performance Sm2Fe17Nx and
NdFe10Mo2Nx compounds. Isotropic Sm2Fe17Nx and NdFe10Mo2Nx compounds w
ith intrinsic coercivity larger than 12 and 4 kOe have been obtained b
y nitriding the HDDR treated powders, respectively. It is found that t
he magnetic properties are sensitively dependent on the time and tempe
rature of the HDDR process, which determine the grain size, nitrogen c
ontent, and the amount of alpha-Fe in the nitrides.