IN295761: A process for preparation of cofe- based nanocrystalline ferromagnetic ribbons for high temperature soft magnetic applications
Abstract
The high temperature soft magnetic applications were mostly catered by CoFe-based crystalline alloys which revealed high Curie temperature more than 800K but inferior soft magnetic properties with coercivity ~150A/m. These alloys not only contained high content of expensive cobalt but also involved costly schedules of rolling into sheets and heat-treatment to get desired properties. The invention particularly relates to a process for preparation of Co-Fe-Si-B-Nb based ferromagnetic alloys. The process involves preparation of range of master alloys with the general formula CoxFe72-xSiyB24-YNbz.
Filing Date:
30-03-2006
Issue Date:
13-04-2018
Applicant:
Panda Ashis Kumar, Ghosh Rabindra Nath, Mitra Amitava
Patent No:
IN295761
Application No:
0893DEL2006
IPC Classification:
H01F 1/12
Country:
India
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