Zirconium-based amorphous alloy and manufacturing method thereof

Abstract

A Zr-based amorphous alloy has the following formula: Zr a Cu b Al c Ni d Ti e M f . a, b, c, d, e, and f of the formula are corresponding atomic percents with 50≦a≦55, 25≦b≦30, 15≦c≦24, 0.1≦d≦9, 0.1≦e≦5, 0.1≦f≦5, and a+b+c+d+e+f≦100. M is selected from one or more of the following group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and mixtures thereof.

What is claimed is: 
     
         1 . A Zr-based amorphous alloy having the following formula: Zr a Cu b Al c Ni d Ti e M f , wherein the a, b, c, d, e, and f of the formula are corresponding atomic percents with 50≦a≦55, 25≦b≦30, 15≦c≦24, 0.1≦d≦9, 0.1≦e≦5, 0.1≦f≦5, and a+b+c+d+e+f≦100; M is selected from one or more of the following group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and mixtures thereof. 
     
     
         2 . The Zr-based amorphous alloy of  claim 1 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 50.5 Cu 25 Al 24 Ni 0.3 Ti 0.1 Sm 0.1 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Ce 5 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Ho 5 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Pr 2 Nd 3 , Zr 50 Cu 25 Al 15 Ni 9 Ti 0.5 Pr 0.2 Nd 0.3 , Zr 50 Cu 25 Al 20 Ni 3 Ti 1.5 Tb 0.5 , Zr 50 Cu 25 Al 18 Ni 0.1 Ti 3 Er 0.9 , Zr 50 Cu 28 Al 18 Ni 0.1 Ti 3 Eu 0.9 , Zr 50 Cu 28 Al 18 Ni 0.1 Ti 3 SC 0.9 , Zr 50 Cu 30 Al 15 Ni 2 Ti 2 Dy 1 , Zr 50 Cu 30 Al 15 Ni 2 Ti 2 Pm 1 , Zr 55 Cu 25 Al 15 Ni 3 Ti 1.5 Dy 0.5 . 
     
     
         3 . The Zr-based amorphous alloy of  claim 1 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5 Er 1 , Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5  Ce 1 , Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5 Pr 0.4 Nd 0.6 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Ce 0.5 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Er 0.5 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Lu 0.5 , Zr 51 Cu 26 Al1 5.5 Ni 6 Ti 1 Pr 0.2 Nd 0.3 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Sc 0.5 . 
     
     
         4 . The Zr-based amorphous alloy of  claim 1 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Pr 0.2 Nd 0.3 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Er 0.8 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Ce 0.8 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Pr 0.3 Nd 0.5 , Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Ce 0.5 , Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Yb 0.5 , Zr 53 Cu 25 Al 15 Ni 1.5 Ti 5 Gd 0.5 , Zr 53 Cu 25 Al 15 Ni 1.5 Ti 5 Sc 0.5 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Pr 0.8 Nd 0.5 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Tm 0.8 . 
     
     
         5 . The Zr-based amorphous alloy of  claim 1 , wherein the Zr-based amorphous alloy has a glass forming ability of 2.5 millimeters. 
     
     
         6 . A method for manufacturing a Zr-based amorphous alloy, the method comprising:
 preparing raw materials comprising Zr, Cu, Al, Ni, and M, wherein M is selected from one or more of the following group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and mixtures thereof; and the elements in the raw materials have the following ratio: Zr a Cu b Al c Ni d Ti e M f , wherein a, b, c, d, e, and f of the formula are corresponding atomic percents with 50≦a≦55, 25≦b≦30, 15≦c≦24, 0.1≦d≦9, 0.1≦e≦5, 0.1≦f≦5, and a+b+c+d+e+f≦100;   melting the raw materials under a vacuum condition to achieve homogeneous fusion of all components; and   casting the melted raw materials into a steel mold to cool down, so as to obtain the Zr-based amorphous alloy presented by the following formula Zr a Cu b Al c Ni d Ti e M f .   
     
     
         7 . The method of  claim 6 , wherein the Zr-based amorphous alloy has a glass forming ability of 2.5 millimeters. 
     
     
         8 . The method of  claim 6 , wherein the melted raw materials are cooled at a speed of about 10 K/second. 
     
     
         9 . The method of  claim 6 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 50.5 Cu 25 Al 24 Ni 0.3 Ti 0.1 Sm 0.1 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Ce 5 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Ho 5 , Zr 50 Cu 25 Al 15 Ni 4 Ti 1 Pr 2 Nd 3 , Zr 50 Cu 25 Al 15 Ni 9 Ti 0.5 Pr 0.2 Nd 0.3 , Zr 50 Cu 25 Al 20 Ni 3 Ti 1.5 Tb 0.5 , Zr 50 Cu 28 Al 18 Ni 0.1 Ti 3 Er 0.9 , Zr 50 Cu 28 Al 18 Ni 0.1 Ti 3 Eu 0.9 , Zr 50 Cu 28 Al 18 Ni 0.1 Ti 3 Sc 0.9 , Zr 50 Cu 30 Al 15 Ni 2 Ti 2 Dy 1 , Zr 50 Cu 30 Al 15 Ni 2 Ti 2 Pm 1 , Zr 55 Cu 25 Al 15 Ni 3 Ti 1.5 Dy 0.5 . 
     
     
         10 . The method of  claim 6 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5 Er 1 , Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5 Ce 1 , Zr 51 Cu 25.5 Al 16 Ni 5 Ti 1.5 Pr 0.4 Nd 0.6 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Ce 0.5 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Er 0.5 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 Lu 0.5 , Zr 51 Cu 26 Al1 5.5 Ni 6 Ti 1 Pr 0.2 Nd 0.3 , Zr 51 Cu 26 Al 15.5 Ni 6 Ti 1 SC 0.5 . 
     
     
         11 . The method of  claim 6 , wherein the Zr-based amorphous alloy has one of the following formulas: Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Pr 0.2 Nd 0.3 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Er 0.5 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Ce 0.8 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Pr 0.3 Nd 0.5 , Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Ce 0.5 , Zr 53 Cu 25.5 Al 16 Ni 4.5 Ti 0.5 Yb 0.5 , Zr 53 Cu 25 Al 15 Ni 1.5 Ti 5 Gd 0.5 , Zr 53 Cu 25 Al 15 Ni 1.5 Ti 5 Sc 0.5 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Pr 0.8 Nd 0.5 , Zr 53 Cu 27.7 Al 15.5 Ni 2.5 Ti 0.5 Tm 0.8 .