Method for producing alloy powder of the R2T17 system, a method

Details Method for producing alloy powder of the R2T17 system, a method Method for producing alloy powder of the R2T17 system, a method

1996-11-19

1998-07-07

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148101, 148105, H01F 1053

Patent

active

057762635

ABSTRACT:
Homogenizing heat-treatment is conducted for changing an ingot containing R (R: Sm or a substance obtained by replacing a part of Sm with one or more kinds of rare earth elements) and T (T: Fe or a substance obtained by replacing a part of Fe with one or more kinds of transition elements) as main component into an alloy ingot mainly containing a R.sub.2 T.sub.17 phase. Next, the above-described alloy ingot is allowed to absorb hydrogen in hydrogen gas in the temperature range of 70.degree. C. to 300.degree. C. and at pressures of 5kgf/cm.sup.2 or more, thus conducting coarse crushing treatment.

REFERENCES:
patent: 4131495 (1978-12-01), Menth et al.
patent: 5288339 (1994-02-01), Schnitzke et al.
patent: 5760966 (1988-08-01), Finnegan et al.
Sugimota, H. et al., "Hydrogen Decrepitation Phenomena in Sm.sub.2 F17 Alloys", Proc. of the Sixth International Conference on Ferrites, (ICF6), Tokyo and Kyoto, Japan 1992, pp. 1145-1148.
Tatami, K, et al., "Magnetic Properties of Sm.sub.2 F.sub.17 N.sub.3+.delta. Under N.sub.2 -Gas Up to 10MP", Proc. of 1992, The 16th Japan Applied Magnetic Society Scientific Lecture Summaries, pp. 440.
Ishizaka, C. et al., "Magnetic Properties of the Nitrogenated Sm.sub.2 F.sub.17 Powder", Proc. of The Sixth International Conference on Ferries (ICF 6), Tokyo and Kyoto, Japan 1992, pp. 1092-1095.

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