Manufacturing method for a silver alloy bonding wire and products thereof

Abstract

A manufacturing method for a silver alloy bonding wire and products thereof A primary material of Ag is melted in a vacuum melting furnace, and then a plurality of secondary metal materials are added into the vacuum melting furnace and co-melted with the primary material to obtain a silver alloy ingot. The obtained silver alloy ingot is drawn to obtain a silver alloy wire. The silver alloy wire is then drawn to obtain a silver alloy bonding wire with a predetermined diameter.

1 . A manufacturing method for a silver alloy bonding wire, comprising:
 a) providing a primary material of Ag;   b) melting the primary material in a vacuum melting furnace, adding a plurality of secondary metal materials of Au and Cu into the vacuum melting furnace and co-melting with the primary material in the vacuum melting furnace to obtain a silver alloy ingot;   c) drawing the silver alloy ingot to obtain a silver alloy wire; and   d) drawing the silver alloy wire to obtain a silver alloy bonding wire with a predetermined diameter.   
   
   
       2 . The manufacturing method according to  claim 1 , wherein the weight percent of Ag in step a) is 90.00%˜99.99%. 
   
   
       3 . The manufacturing method according to  claim 2 , wherein the weight percent of Au in step b) is 0.0001%˜9.9997%. 
   
   
       4 . The manufacturing method according to  claim 3 , wherein the weight percent of Cu in step b) is 0.0001%˜9.9997%. 
   
   
       5 . The manufacturing method according to  claim 4 , wherein a plurality of trace metal materials of Be and Al are added into the vacuum melting furnace and co-melted in step b). 
   
   
       6 . The manufacturing method according to  claim 5 , wherein the weight percent of Be in step b) is 0.0001%˜9.9997%. 
   
   
       7 . The manufacturing method according to  claim 6 , wherein the weight percent of Al in step b) is 0.0001%˜9.9997%. 
   
   
       8 . The manufacturing method according to  claim 7 , wherein the surface of the silver alloy bonding wire is cleaned and is annealed after step d). 
   
   
       9 . A silver alloy bonding wire, comprising:
 90.00-99.99 wt. % Ag;   0.0001˜9.9997 wt. % Au; and   0.0001˜9.9997 wt. % Cu.   
   
   
       10 . The silver alloy bonding wire according to  claim 9 , further comprises 0.0001%˜9.9997% wt. Be. 
   
   
       11 . The silver alloy bonding wire according to  claim 10 , further comprises 0.0001%˜9.9997% wt. Al.