Low cobalt Cr-Co-Fe permanent magnet alloys (invited)
- 1 March 1981
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 52 (3) , 2536-2541
- https://doi.org/10.1063/1.328994
Abstract
This paper reviews the results of studies in our laboratory in the 2 to 12% Co range of Cr‐Co‐Fe permanent magnet alloys. Our salient results are as follows: (1) Isotropic ternay alloys, typified by 10.5Co‐28Cr‐Fe (Chromindur II) with values of Br = 9800, Hc = 400 Oe and (BH)max = 1.8 MGOe. This alloy is now in volume production for telephone receiver applications. (2) Anisotropic ternary alloys prepared by a newly developed ’’deformation‐aging’’ process, with values of (BH)max ranging from 2.3 MGOe for a 5Co‐33Cr‐Fe alloys to 5.5 MGOe for an 11.5Co‐33Cr‐Fe alloy. Adding 2% Cu raises the value of (BH)max by 0.5–1.0 MGOe. (3) Anisotropic alloys prepared by magnetic‐field aging, with values of (BH)max ranging from 4.2 MGOe for a 2.5Co‐32Cr‐Fe alloy to 6.2 MGOe for a 9Co‐27Cr‐Fe alloy. (4) Sintered magnets typified by the 5Co‐31Cr‐Fe alloy with (BH)max∼4.4 MGOe.This publication has 4 references indexed in Scilit:
- High-energy Fe-Cr-Co permanent magnets with (B H)max ≃8–10 MG OeApplied Physics Letters, 1980
- New Magnetic AlloysScience, 1980
- Deformation-induced anisotropic Cr-Co-Fe permanent magnet alloysIEEE Transactions on Magnetics, 1979
- New developments in technologically important magnetic materialsJournal of Magnetism and Magnetic Materials, 1978