High corrosion resistant amorphous alloys

Details High corrosion resistant amorphous alloys High corrosion resistant amorphous alloys

1994-04-20

1995-10-24

Sheehan, John

Metal treatment

Stock

Amorphous, i.e., glassy

420425, 420426, 420427, 420428, C22C 4500

Patent

active

054606632

ABSTRACT:
Amorphous alloys having an extremely high corrosion resistance comprise Cr and at least one element selected from Ta and Nb, as essential components, and are spontaneously passive owing to the formation of stable protective films, even in very corrosive environments such as poorly oxidizing concentrated hydrochloric acid. The amorphous alloy may further include one or more elements appropriately selected from other alloying elements of Al, Ti, Zr, Fe, Co, Ni, Cu, Mo and W. The amorphous alloys have advantageous properties, such as very high corrosion resistance, high corrosion resistance at elevated temperatures and high wear resistance, and, therefore are useful in chemical plants or other industrial and domestic applications.

REFERENCES:
patent: 4338145 (1982-07-01), Yasujima et al.
patent: 5380375 (1995-01-01), Hashimoto et al.

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