Wirebond Process between Gold and Copper 1

[SemiconProcess]

I am a new engineer in a Semicon Industry and i handle Wirebond technology..I would like to ask why it is hard to wirebond Gold wire to copper Leadframe..Is there any property between Gold and copper that affects there compatibility?

 

[cloa]

Intermetallic formation.

http://www.siliconfareast.com/wirebond-metallurgies.htm

 

[SemiconProcess]

Thank you cloa..