WEAR RESISTANT MAGNETIC ALLOY

PURPOSE:To improve wear resistance without deteriorating high magnetic perme ability by adding specific rare earth elements to an Ni-Fe magnetic alloy. CONSTITUTION:One or >=2 elements among Nd, Pr, and Sm are incorporated by 0.001-1% by weight, in total, into an Ni-Fe magnetic alloy ('Perma...

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Bibliographic Details
Main Author YASUOKA MASATO
Format Patent
LanguageEnglish
Published 27.06.1995
Edition6
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INDUCTANCES
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MAGNETS
METALLURGY
PHYSICS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To improve wear resistance without deteriorating high magnetic perme ability by adding specific rare earth elements to an Ni-Fe magnetic alloy. CONSTITUTION:One or >=2 elements among Nd, Pr, and Sm are incorporated by 0.001-1% by weight, in total, into an Ni-Fe magnetic alloy ('Permalloy(R)') of 35-90% Ni content, or further, one or >=2 kinds among <=10% Mo, <=9% Cr, <=10% Cu, <=8% Nb, <=10% W, <=5% Ti, and <=8% V are added by <=10% in total. This alloy is vacuum-melted and formed into a steel ingot. This steel ingot is further subjected to working, such as hot forging, rolling, and cold rolling, heated in a nonoxidizing atmosphere or in vacuum up to a temp. between 600 deg.C and the melting point, and then cooled from a temp. (600 deg.C) not lower than the superlattice - disordered lattice transformation point. By this method, the high magnetic permeability of 'Permalloy(R)' can be maintained and superior wear resistance can be obtained.
Bibliography:Application Number: JP19930340716