7.2.1.3.2.2 Permanent magnet properties of the alloy system as dependent on the preparation technique

2005 ◽  
pp. 34-44
Author(s):  
T. Nakamichi
Keyword(s):  
Permanent Magnet ◽  
Alloy System ◽  
Preparation Technique

scholarly journals Temperature Dependence of Magnetic Properties in Co-Pt, Fe-Pt and Cr-Pt Permanent Magnet Alloy System

1992 ◽  
Vol 56 (12) ◽  
pp. 1495-1500 ◽  
Author(s):  
Kiyoshi Watanabe ◽  
Takejiro Kaneko ◽  
Shigehiro Ohnuma
Keyword(s):  
Magnetic Properties ◽  
Temperature Dependence ◽  
Permanent Magnet ◽  
Alloy System ◽  
Magnet Alloy ◽  
Permanent Magnet Alloy

scholarly journals The Microstructure of Fe-Cr-Co-Nb-Al Permanent Magnet

1976 ◽  
Vol 34 ◽  
pp. 606-607
Author(s):  
M. Okada ◽  
M. Homma ◽  
H. Kaneko ◽  
G. Thomas
Keyword(s):  
Magnetic Properties ◽  
Permanent Magnet ◽  
Diffraction Pattern ◽  
Solution Treatment ◽  
Alloy System ◽  
Thermomagnetic Treatment ◽  
Rich Phase ◽  
Magnetic Hardening ◽  
Two Phases ◽  
Energy Products

Fe-Cr-Co permanent magnet alloys are known to be commercially potential magnets, the energy products of which are comparable to those of Alnico V, with good ductility (1). It was recently found that the addition of Nb and A1 to the Fe-Cr-Co alloy system facilitated heat treatments to produce good magnetic properties (2).The present paper describes the microstructure of an Fe-Cr-Co-Nb-Al permanent magnet. An effect of a thermomagnetic treatment on the microstructures is also discussed since a thermomagnetic treatment plays an important role in producing good magnetic properties in this alloy.The magnetic hardening of the alloy is performed by tempering after solution treatment. Upon tempering, a a phase spinodally decomposes into two phases, an iron-rich phase (α1) and a chromium rich phase (α2) (1).The microstructure shown in Fig. 1 results after the Fe-28wt%Cr-15wt%Co-lwt%Nb alloy is tempered at 640°C for 20 min. The decomposition process appears to be isotropic in the alloy. No satellites are observed in the corresponding diffraction pattern.

scholarly journals Permanent Magnet Properties and their Temperature Dependence in the Fe–Pt–Nb Alloy System

1991 ◽  
Vol 32 (3) ◽  
pp. 292-298 ◽  
Author(s):  
Kiyoshi Watanabe
Keyword(s):  
Temperature Dependence ◽  
Permanent Magnet ◽  
Alloy System
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