Casting aluminum alloy with dispersed cnt and method for producing the same

Abstract

The present disclosure provides a casting aluminum alloy with dispersed carbon nanotubes (CNT), which is molded by charging an oxide-coated CNT in the range of 1 to 5 vol % into a molten Al—Ti—B-based alloy, and stirring the resulting mixture. The aluminum alloy has enhanced elasticity by forming a TiB 2 compound in a structure, and a method for producing the same.

What is claimed is: 
     
         1 . A casting aluminum alloy, comprising:
 carbon nanotubes (CNT), wherein the CNT are oxide coated and present in the range of 1 to 5 vol %; and   an Al—Ti—B alloy, wherein the CNT are evenly dispersed throughout the Al—Ti—B alloy.   
     
     
         2 . The casting aluminum alloy of  claim 1 , wherein the Al—Ti—B-based alloy is formed by mixing/stirring a molten Al—Ti-based alloy and a molten Al—B-based alloy by an in-situ method. 
     
     
         3 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti in the range of 2 to 7 wt %. 
     
     
         4 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 2 wt %. 
     
     
         5 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 3 wt %. 
     
     
         6 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 4 wt %. 
     
     
         7 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 5 wt %. 
     
     
         8 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 6 wt %. 
     
     
         9 . The casting aluminum alloy of  claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 7 wt %. 
     
     
         10 . The casting aluminum alloy of  claim 2 , wherein the Al—B-based alloy comprises B in the range of 1 to 3 wt %. 
     
     
         11 . The casting aluminum alloy of  claim 2 , wherein the Al—B-based alloy comprises B at about 1 wt %. 
     
     
         12 . The casting aluminum alloy of  claim 2 , wherein the Al—B-based alloy comprises B at about 2 wt %. 
     
     
         13 . The casting aluminum alloy of  claim 2 , wherein the Al—B-based alloy comprises B at about 3 wt %. 
     
     
         14 . A method for producing the casting aluminum alloy of  claim 1  comprising:
 (a) forming a molten Al—Ti-based alloy; 
 (b) forming a molten Al—B-based alloy; 
 (c) mixing the molten Al—Ti-based alloy and the molten Al—B-based alloy by in-situ method; 
 (d) charging an oxide-coated CNT into the resulting molten metal, wherein the CNT are present in the range of 1 to 5 vol %, and 
 (e) stirring the charged molten metal. 
 
     
     
         15 . The method of  claim 14 , wherein the molten Al—Ti of step (a) comprises Ti in the range of about 2 to 7 wt %. 
     
     
         16 . The method of  claim 14 , wherein the molten Al—B of step (b) comprises B in the range of about 1 to 3 wt %. 
     
     
         17 . The method of  claim 14 , wherein step (c) forms a TiB 2  compound in a structure by mixing/stirring by in-situ method.