Process for manufacturing a soft magnetic body of an iron-nickel alloy
Patent 5147601 Issued on September 15, 1992. Estimated Expiration Date: 
March 30, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 30, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of producing large objects from rapidly quenched non-equilibrium powders Solid particle erosion resistant coating utilizing titanium carbide, process for applying and article coated therewith High energy product permanent magnet having improved intrinsic coercivity and method of making same Patent #: 4968347 InventorsAssigneeApplicationNo. 860183 filed on 03/30/1992US Classes:419/25, Controlled cooling after sintering419/36, Addition of fugitive material419/37, Additional material is solid419/38, Consolidation of powder prior to sintering419/57, Special atmosphere419/58, Hydrogen or hydrogen plus nitrogen (Nitrogen per se in 57)419/60VacuumExaminersPrimary: Lechert, Stephen J. Jr.Attorney, Agent or FirmInternational ClassG22F 001/00Foreign Application Priority Data1991-04-30 JPAbstractA composition comprising a powder of iron and nickel and a binder (e.g. wax) is injection molded. The powder contains 0.5 to 10% by weight of nickel and has an average particle diameter not exceeding 45 microns. The binder is removed from the molded product. The molded product is sintered, and the sintered product is cooled to room temperature slowly at a rate of 2° C. to 50° C. per minute. The sintered product is of an iron-nickel alloy, has a high density and a high level of soft ferromagnetic properties, and may be complicated in shape. | |
