Pt-base bulk solidifying amorphous alloys
OwnerJan Schroers, William Johnsoninventors
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Abstract
Pt-based bulk-solidifying amorphous alloys and methods of forming articles from Pt-based bulk-solidifying amorphous alloys are provided. The Pt-based alloys of the current invention are based on Pt—Ni—Co—Cu—P alloys.
Claims50
A Pt-based alloy according to the formula PtaCobCucNidPe, wherein a is from about 39 to about 50 atomic percentage, b is from about 0 to 15 atomic percent, c is from about 16 to about 35 atomic percentage, d is from 0 to 15 atomic percent, and e is from about 17 to about 25 atomic percent, wherein the sum of b and d is greater than 2 atomic percent, and wherein Pt comprises 75 percent of the Pt-based alloy by weight.
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A Pt-based alloy according to the formula PtaCobCucNidPe, wherein a is from about 54 to about 64 atomic percentage, b is from about 0 to 8 atomic percent, c is from about 9 to about 20 atomic percentage, d is from 1 to 12 atomic percent, and e is from about 17 to about 24 atomic percent, wherein the sum of b and d is greater than 2 atomic percent, and wherein Pt comprises 85 percent of the Pt-based alloy by weight.
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A Pt-based alloy according to the formula:
- (Pt,Pd)1-xPGMx)a((Cu,Co,Ni)1-yTMy)b(P,Si)1-zOMz)c,
- where a is in the range of about 20 to 65 atomic percent, b is in the range of about 15 to 60 atomic percent, c is in the range of about 16 to 24 atomic percent, wherein Pt and P are each at least about 10 atomic percent of the whole, and where the total of Ni and Co content is at least about 2 atomic percentage;
- where PGM is selected from the group consisting of Ir, Os, Au, W, Ru, Rh, Ta, Nb, and Mo;
- where TM is selected from the group consisting of Fe, Zn, Ag, Mn, and V;
- where OM is selected from the group consisting of B, Al, Ga, Ge, Sn, Sb, and As;
- and
- where the x, y, and z fraction follow the following constraints:
- z is less that about 0.3,
- the sum of x, y, and z is less than about 0.5,
- when a is less than about 35, then x is less than about 0.3 and y is less than about 0.1,
- when a is in the range of about 35 to 50, then x is from about 0 to 0.1 and y is less than about 0.2, and
- when a is more than about 50, then x is from about 0 to about 0.1 and y is less than about 0.3.
A Pt-based alloy according to the formula:
- (Pt1-xPdx)a(Cu1-y(Co,Ni)y)b(P1-zSiz)c,
- where a is in the range of about 20 to 65 atomic percent, b is in the range of about 15 to 60 atomic percent, c is in the range of about 16 to 24 atomic percent, x is in the range of about 0 to 0.8, y is in the range of about 0.05 to 1, and z is in the range of about 0 to 0.4.
A Pt-based alloy according to the formula:
- Pta(Cu1-yNiy)bPc,
- where a is in the range of about 20 to 65 atomic percent, b is in the range of about 15 to 60 atomic percent, c is in the range of about 16 to 24 atomic percent, and y is in the range of about 0.05 to 1.
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Dependencies are inferred from the claim text.