Tin-containing amorphous alloy
View Patent ↗One embodiment provides a composition, the composition comprising: an alloy that is at least partially amorphous and is represented by a chemical formula: (Zr, Ti) a M b N c Sn d , wherein: M is at least one transition metal element; N is Al, Be, or both; a, b, c, and d each independently represents an atomic percentage; and a is from about 30 to 70, b is from about 25 to 60, c is from about 5 to 30, and d is from about 0.1 to 5.
1. A composition, comprising:
an alloy that is at least partially amorphous having an amorphous content of at least 5 vol. % and is represented by a chemical formula:
Q a M b N c Sn d
wherein:
Q is Zr, Ti, or both;
M is V;
N is Al, Be, or both; and
a, b, c, and d each independently represents an atomic percentage; and a is from about 30 to 70, b is from about 25 to 60, c is from about 5 to 30, and d is from about 0.1 to about 5.
2. The composition of claim 1 , wherein the alloy is at least substantially amorphous.
3. The composition of claim 1 , wherein the chemical formula is Zr a M b N c Sn d .
4. The composition of claim 1 , wherein the chemical formula is Ti a M b N c Sn d .
5. The composition of claim 1 , further including Ni, Co, Cu, Nb, Ta, Mo, W, or combinations thereof.
6. The composition of claim 1 , further including Ni, Cu, or both; and N is Al.
7. The composition of claim 1 , further including Ni, Cu, or both; and N is Be.
8. The composition of claim 1 , further including Cu, Nb, Ni, Co, Ta, Mo, or combinations thereof; and N is Be.
9. The composition of claim 1 , wherein the alloy has an elastic limit of at least 1.5%.
10. The composition of claim 1 , wherein the alloy has a hardness value of at least 4.0 GPa.
11. The composition of claim 1 , wherein the alloy has a fracture toughness of at least 20 MPa√m.
12. A method of making an alloy, comprising:
heating a mixture of the alloy at a first temperature above a glass transition temperature Tg of the alloy, the mixture comprising elements Q, M, N, Sn;
quenching the mixture to a second temperature below the Tg of the alloy to form the alloy that is at least partially amorphous having an amorphous content of at least 5 vol. % and is represented by a chemical formula:
Q a M b N c Sn d
wherein:
Q is Zr, Ti, or both;
M is V;
N is Al, Be, or both;
a, b, c, and d each independently represents an atomic percentage; and:
a is from about 30 to 70, b is from about 25 to 60, c is from about 5 to 30, and d is from about 0.01 to 5.
13. The method of claim 12 , wherein the Q in the mixture has a purity of 99% or less as a raw material.
14. The method of claim 12 , further comprising heating the mixture to the first temperature.
15. The method of claim 12 , wherein the first temperature is above a melting temperature of the alloy.
16. The method of claim 12 , wherein a is from about 40 to 70; b is from about 25 to 60; c is from about 5 to 30; and d is from about 0.5 to 4.5.
17. The method of claim 12 , further including Ni, Cu, Nb, Ta, Mo, W, or combinations thereof.
18. The method of claim 12 , further including a combination of Ni and Cu, and N is a combination of Al and Be.
19. A method of making an alloy, comprising:
heating a mixture of the alloy at a first temperature above a glass transition temperature Tg of the alloy, the mixture comprising elements Zr, Cu, Ni, Sn;
quenching the mixture to a second temperature below the Tg of the alloy to form the alloy that is at least partially amorphous having an amorphous content of at least 5 vol. % and is represented by a chemical formula:
Zr 50.75-x Cu 36.25 Ni 4 Al 9 Sn x ,
wherein x represents an atomic percentage and x is from about 0.01 to 5.
20. A composition, comprising:
an alloy having an amorphous content of at least 5 vol. % and is represented by a chemical formula:
Zr 50.75-x Cu 36.25 Ni 4 Al 9 Sn x ,
wherein x represents an atomic percentage and x is from about 0.01 to 5.