METHOD AND APPARATUS FOR PRODUCING AMORPHOUS ALLOY SHEET, AND AMORPHOUS ALLOY SHEET PRODUCED USING THE SAME

摘要

The present invention provides a method for producing a bulk amorphous alloy sheet with high quality atlow production cost, by which an alloy melt can be directly transformed into a sheet form without using other additional processes. The method comprises preparing a melt containing alloy components; feeding themelt into a gap defined between two rolls, which rotate in opposite direction to each other, and each of which is provided with heat exchange means; and cooling the melt at a cooling rate higher than the critical cooling rate for transformation of the melt into an amorphous solid phase, when the melt passes through the gap defined between the two rolls. The present invention also provides an apparatus for producing a bulk amorphous alloy sheet with high quality at low production cost, and a bulk amorphous alloy sheet.