Patent Number: 8,820,393

Title: Bulk amorphous alloy sheet forming processes

Abstract: Embodiments herein relate to a method for forming a bulk solidifying amorphous alloy sheets have different surface finish including a "fire" polish surface like that of a float glass. In one embodiment, a first molten metal alloy is poured on a second molten metal of higher density in a float chamber to form a sheet of the first molten that floats on the second molten metal and cooled to form a bulk solidifying amorphous alloy sheet. In another embodiment, a molten metal is poured on a conveyor conveying the sheet of the first molten metal on a conveyor and cooled to form a bulk solidifying amorphous alloy sheet. The cooling rate such that a time-temperature profile during the cooling does not traverse through a region bounding a crystalline region of the metal alloy in a time-temperature-transformation (TTT) diagram.

Inventors: Prest; Christopher D (Cupertino, CA), Poole; Joseph C. (Cupertino, CA), Stevick; Joseph (Glendora, CA), Waniuk; Theodore Andrew (Lake Forest, CA), Pham; Quoc Tran (Anaheim, CA)

Assignee: Apple Inc.

International Classification: B22D 11/01 (20060101); B22D 11/06 (20060101)

Expiration Date: 9/02/12018