TY - GEN
T1 - Effect of temperature and pressure conditions on phase evolution and magnetic anisotropy in d-HDDR process for Nd-Fe-B powders
AU - Horikawa, T.
AU - Matsuura, M.
AU - Sugimoto, S.
AU - Yamazaki, M.
AU - Mishima, C.
PY - 2015/7/14
Y1 - 2015/7/14
N2 - It is well-known that by applying the HDDR (hydrogen disproportionation desorption recombination) treatment to Nd-Fe-B powders, the resultant powders show magnetic anisotropy and such an anisotropic powders are useful to fabricate high performance bonded magnets. The degree of magnetic anisotropy of HDDR-treated Nd-Fe-B powders varies depending on the temperature and hydrogen pressure (PH2) during the treatment and also in d(dynamic)-HDDR method there is an optimal condition which maximizes the anisotropy.[1,2] Many researchers have been tried to reveal the origin of this anisotropy, however, it is still unclear. In the present study, to clarify the mechanism of the induction of magnetic anisotropy, the relationship between the d-HDDR condition and the properties of obtained samples was investigated from the aspect of both the evolution in phases and the crystal structure.
AB - It is well-known that by applying the HDDR (hydrogen disproportionation desorption recombination) treatment to Nd-Fe-B powders, the resultant powders show magnetic anisotropy and such an anisotropic powders are useful to fabricate high performance bonded magnets. The degree of magnetic anisotropy of HDDR-treated Nd-Fe-B powders varies depending on the temperature and hydrogen pressure (PH2) during the treatment and also in d(dynamic)-HDDR method there is an optimal condition which maximizes the anisotropy.[1,2] Many researchers have been tried to reveal the origin of this anisotropy, however, it is still unclear. In the present study, to clarify the mechanism of the induction of magnetic anisotropy, the relationship between the d-HDDR condition and the properties of obtained samples was investigated from the aspect of both the evolution in phases and the crystal structure.
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U2 - 10.1109/INTMAG.2015.7156667
DO - 10.1109/INTMAG.2015.7156667
M3 - Conference contribution
AN - SCOPUS:84942474403
T3 - 2015 IEEE International Magnetics Conference, INTERMAG 2015
BT - 2015 IEEE International Magnetics Conference, INTERMAG 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 IEEE International Magnetics Conference, INTERMAG 2015
Y2 - 11 May 2015 through 15 May 2015
ER -