Method of production glassy alloy

Details Method of production glassy alloy Method of production glassy alloy

1998-02-19

2000-06-20

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148304, C22C 4502

Patent

active

060773677

ABSTRACT:
The present invention provides a method of producing a glassy alloy which has soft magnetism at room temperature and high resistivity and which can be easily obtained in a bulk shape thicker than an amorphous alloy ribbon obtained by a conventional melt quenching method. In this method, a melted metal having a supercooled liquid temperature width .DELTA.T.sub.x of 35.degree. C. or more, which is expressed by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g (wherein T.sub.x indicates the crystallization temperature, and T.sub.g indicates the glass transition temperature), is sprayed on a cooling body under movement to form a ribbon-shaped glassy alloy material; and the glassy alloy is then heat-treated by heating at a heating rate of 0.15 to 3.degree. C./sec and then cooling.

REFERENCES:
patent: 4482402 (1984-11-01), Taub
patent: 4859256 (1989-08-01), Sawa et al.
patent: 5738733 (1998-04-01), Inoue
German book "Einfuhrung in die Werkstoffwissenschaft" (Introduction to Materials Science), publisher Werner Schatt, 6th edition, Leipzig 1987.

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