magnetic field effect;
nitrogenation;
gas-solid reaction;
Sm2Fe17N3;
CHEMICAL-EQUILIBRIUM;
PHASE-FORMATION;
ENHANCEMENT;
IRON;
DIFFUSION;
MNBI;
D O I:
10.2320/matertrans.MT-MN2019012
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Nitrogenation of Sm2Fe17 powder was performed under a zero field and a magnetic field of 5 T at 623, 673 and 743K to clarify the magnetic field effect on nitrogenation. Applying a magnetic field of 5 T induced nitrogenation compared with zero-field nitrogenation, and almost fully nitride Sm2Fe17N2.9 was obtained at 743 K. Mossbauer spectroscopy results suggested that a 5-T magnetic field promoted the phase transformation to the fully-nitride Sm2Fe17N3 phase. The magnetic field effect was discussed based on the magnetic energy gain and magnetic properties of host Sm2Fe17 and fully nitride Sm2Fe17N3.
机构:
Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Kagoshima Univ, Res Support Ctr, Inst Res Promot, Kagoshima 8900065, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Onoue, Masahira
Kobayashi, Ryota
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Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Kagoshima Univ, Kagoshima, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Kobayashi, Ryota
Mitsui, Yoshifuru
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Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Mitsui, Yoshifuru
Umetsu, Rie Y.
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Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Umetsu, Rie Y.
Uwatoko, Yoshiya
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Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan
Uwatoko, Yoshiya
Koyama, Keiichi
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Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, JapanKagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan