FIELD: metallurgy.
SUBSTANCE: charge is prepared, which contains iron and phosphorus; then, it is pressed, sintered and cooled down. Sintering is performed in vacuum of 10-1-10-3 Pa at the temperature of 1320-1380°C; after that, exposure is performed at the specified temperature during 1.5-2.5 hours and cooling is performed to the temperature of 450-600°C. Sintering, exposure and cooling is repeated cyclically so that the required characteristics of soft magnetic material are obtained. Charge can be prepared by introduction of phosphorus to iron powder in the form of 10% of the solution of orthophosphoric acid in ethyl alcohol or in the form of ferrophosphorus powder.
EFFECT: reduction of coercitive force; increase of magnetic permeability and induction of saturation due to creation of uniform granularity of material and spheroidisation of pores.
12 cl, 3 dwg, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING MAGNETICALLY SOFT MATERIAL FOR MAGNETIC CONDUCTORS OF RELAYS | 2013 |
|
RU2553134C2 |
| METHOD FOR PRODUCING NONRETENTIVE MATERIAL | 1992 |
|
RU2040810C1 |
| PROCEDURE FOR PRODUCTION OF MAGNETIC SOFT MATERIAL | 2009 |
|
RU2413320C1 |
| METHOD OF PRODUCTION OF MAGNETICALLY SOFT MATERIAL | 2005 |
|
RU2296382C1 |
| METHOD OF NON-RETENTIVE MATERIAL RECEIVING | 2007 |
|
RU2350676C2 |
| METHOD OF PRODUCING IRON-BASED PHOSPHORUS-BEARING POWDER | 2012 |
|
RU2494836C1 |
| METHOD OF PRODUCING OF HIGH DENSITY FRICTION POWDER PHOSPHORUS-CONTAINING MATERIAL BASED ON IRON | 2014 |
|
RU2564654C1 |
| METHOD FOR PRODUCING PERMANENT MAGNETS ON THE BASIS OF RARE-EARTH METALS ALLOYS WITH IRON AND NITROGEN | 2015 |
|
RU2601149C1 |
| FERRUM POWDER BASED FERROMAGNETIC MATERIAL TO PRODUCE D,C, AND A,C, MAGNETIC CONDUCTORS | 0 |
|
SU1836731A3 |
| IRON-BASE NONRETENTIVE MATERIAL PRODUCTION METHOD | 1991 |
|
RU2030805C1 |
