METHOD OF MANUFACTURING FERRITE MAGNET

PROBLEM TO BE SOLVED: To provide a method of manufacturing a ferrite magnet by which the pass of a dispersion medium in slurry is reduced in order to shorten hours required in a molding step and the elution of metallic ions to the dispersion medium is suppressed in order to reduce the occurrence of...

Full description

Saved in:
Bibliographic Details
Main Authors HISANABE HIDEYUKI, UMEZAWA HIDEYUKI, MASUZAWA KIYOYUKI, MINACHI YOSHIHIKO
Format Patent
LanguageEnglish
Published 08.11.2007
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
INDUCTANCES
LIME, MAGNESIA
MAGNETS
METALLURGY
REFRACTORIES
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SLAG
TRANSFORMERS
TREATMENT OF NATURAL STONE
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a method of manufacturing a ferrite magnet by which the pass of a dispersion medium in slurry is reduced in order to shorten hours required in a molding step and the elution of metallic ions to the dispersion medium is suppressed in order to reduce the occurrence of pin holes in a sintered compact. SOLUTION: The method of manufacturing the ferrite magnet is provided with a finely grinding step of pulverizing a composition including ferrite powder and SiO2powder having 50-150 m2/g specific surface to obtain pulverized powder, a molding step of compacting the slurry in which the pulverized powder is dispersed in the dispersion medium in a magnetic field to obtain a compact and a step of firing the compact. It is preferable that the specific surface of SiO2powder is ≥100 m2/g and the composition contains 0.05-2.5 wt.% SiO2powder per the ferrite powder. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20070090036