Alloy Composition

Abstract

An alloy composition comprises 73.0 to 74.5 wt % of Ag and 25.5-27.0 wt % of Sn; 30.0-67.5 wt % of Ag and 32.5-70.0 wt % of In; or 29.0-60.0 wt % of Ag, 19.0-35.0 wt % of Sn and 20.0-35.2 wt % of In, wherein the particle diameter of Ag is between 10 nm to 200 μm. The alloy composition in the present invention has characters of low melting point, low hardness and high ductility. On the other hand, after a heat treatment, the alloy composition is tended to be high in melting point, hardness, strength, stability and conductivity.

1 . An alloy composition comprising: 72.0-74.5 wt % of Ag and 24.5-27.0 wt % of Sn, wherein the particle diameter of Ag is from 10 nm to 200 μm. 
     
     
         2 . The alloy composition as claimed in  claim 1  further comprising 0.01-2.0 wt % of Cu. 
     
     
         3 . The alloy composition as claimed in  claim 1  further comprising 0.01-2.0 wt % of Ni. 
     
     
         4 . The alloy composition as claimed in  claim 1 , wherein a structural texture of the alloy composition as Ag 3 Sn intermetrallic compound is formed after a thermal reaction at 230° C. to 400° C. 
     
     
         5 . An alloy composition comprising: 29.0-67.5 wt % of Ag and 31.5-70.0 wt % of In, wherein the particle diameter of Ag is from 10 nm to 200 μm. 
     
     
         6 . The alloy composition as claimed in  claim 5 , wherein the Ag is 29.0-32.0 wt % and the In is 66.5-70.0 wt %. 
     
     
         7 . The alloy composition as claimed in  claim 6 , wherein a structural texture of the alloy composition transforming as AgIn 2  intermetrallic compound is formed after a thermal reaction at 100° C. to 160° C. 
     
     
         8 . The alloy composition as claimed in  claim 5 , wherein the Ag is 64.0-67.5 wt % and the In is 31.5-35.0 wt %. 
     
     
         9 . The alloy composition as claimed in  claim 8 , wherein a structural texture of the alloy composition as Ag 2 In intermetrallic compound is formed after a thermal reaction at 150° C. to 250° C. 
     
     
         10 . The alloy composition as claimed in  claim 5 , wherein the Ag is mixed in the In by a rolling-mix method. 
     
     
         11 . The alloy composition as claimed in  claim 5 , further comprising 0.01-2.0 wt % of Cu. 
     
     
         12 . The alloy composition as claimed in  claim 5 , further comprising 0.01-2.0 wt % of Ni. 
     
     
         13 . An alloy composition comprising 29.0-60.0 wt % of Ag, 19.0-35.0 wt % of Sn, and 20.0-35.2 wt % of In, wherein the particle diameter of Ag between 10 nm to 200 μm. 
     
     
         14 . The alloy composition as claimed in  claim 13 , wherein a structural texture of the alloy composition as an intermetrallic compound is formed after a thermal reaction at 150° C. to 250° C. 
     
     
         15 . The alloy composition as claimed in  claim 13 , wherein the Ag is mixed in the Sn and the In by a rolling-mix method. 
     
     
         16 . The alloy composition as claimed in  claim 13 , further comprising 0.01-2.0 wt % of Cu. 
     
     
         17 . The alloy composition as claimed in  claim 13 , further comprising 0.01-2.0 wt % of Ni.