Metal treatment – Stock – Magnetic
Reexamination Certificate
2007-10-16
2007-10-16
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Magnetic
C148S304000, C148S403000
Reexamination Certificate
active
10479765
ABSTRACT:
The present invention provides an iron-base amorphous alloy thin strip excellent in soft magnetic properties, an iron core manufactured by using said thin strip, and a mother alloy for producing a rapidly cooled and solidified thin strip. More specifically, the present invention is an iron-base amorphous alloy thin strip produced by rapidly cooling and solidifying molten metal by ejecting it onto a moving cooling substrate through a pouring nozzle having a slot-shaped opening, characterized by having an ultra-thin oxide layer of a thickness in the range from 5 to 20 nm on one or both of the surfaces of the amorphous mother phase containing P in the range from 0.2 to 12 atomic %.
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Sakamoto Hiroaki
Sato Yuichi
Nippon Steel Corporation
Sheehan John P.
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