US 2009/0014096 A1 · HIGH CORROSION RESISTANT Zr-Ti BASED METALLIC GLASSES

Abstract

Bulk solidifying amorphous alloys (BMGs) having improved corrosion resistance properties; and more particularly a sub-set of Zr—Ti-based BMGs having improved corrosion resistance properties are provided. The BMG compositions are formed by carefully controlling the concentration of, or removing altogether, highly electronegative elements, such as Ni and Cu from Zr—Ti-based bulk solidifying amorphous alloys thereby producing BMG materials with corrosion resistance properties that far exceed those of current commercially available BMGs and most conventional alloys. The elimination of these electronegative materials also opens the possibility of new uses for BMGs, including in biological applications.

Claims27

Dependent claims

A bulk metallic glass having a high corrosion resistance comprising a composition in accordance with the following molecular formula:

(ZraTib)1-z(BecXd)z
wherein x is an additive material selected from the group consisting of Y, Co, Fe, Cr, Mo, Mg, Al, Hf, Ta, Nb and V;
wherein z is from around 20 to 50 at %;
wherein the sum of c and d is equal to z and wherein c is at least around 25 at %;
and
wherein elements having an electronegativity greater than 1.9 are present only in trace amounts.

3 more elements

Dependencies are inferred from the claim text.

HIGH CORROSION RESISTANT Zr-Ti BASED METALLIC GLASSES

Life of this patent

HIGH CORROSION RESISTANT Zr-Ti BASED METALLIC GLASSES

Life of this patent

Abstract

Claims27