The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 1978
Filed:
Oct. 03, 1977
Applicant:
Inventor:
Orville W Reen, New Kensington, PA (US);
Assignee:
Allegheny Ludlum Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; H01F / ; H01F / ;
U.S. Cl.
CPC ...
148 3155 ; 75200 ; 75211 ; 75246 ; 148105 ; 428928 ;
Abstract
A process for producing a phosphorus-bearing soft magnetic material. The process includes the steps of: blending iron powder and ferro-phosphorus powder into a mixture containing from 0.4 to 1.25% phosphorus; pressing said blended mixture into a compact; and sintering said compact in a non-oxidizing atmosphere. The iron and ferro-phosphorus powder respectively have no more than 0.02 and 0.2% calcium. The ferro-phosphorus powder has from 12 to 30% phosphorus.