Magnetic Properties of Sintered Fe-Cr Alloys
1977 Volume 48 Issue 2 Pages 144-150
Details
1977 Volume 48 Issue 2 Pages 144-150
From the point of view of the powder metallurgy a study was made about magnetic properties of sintered materials of water-atomized iron-chromium alloy powder containing 14 up to 26% chromium.
The results obtained can be summarized as per written hereunder:
(1) Sintered 16% Cr-Fe alloys have the highest mangetic properties. If they are sintered at 1200°C for 2hrs in vacuo, the maximum permeability becomes 3500 and coercive force 1.26Oe respectively. They are almost equal to the properties of bulk magnetic stainless steel.
(2) Magnetic properties of sintered materials depend upon pores' shape and size distribution. In case that the porosity is constant the rounder, the bigger of the pores and the higher of the magnetic properties.
(3) Since pores are being dispersed in the sintered materials, the eddy current is found to be restrained and watt loss is very few in alternating magnetic fields.
