Au thin film stick onto Ti substrate

Dear labmember,

I am looking for someway to adhere Au thin film(1um) to Ti substrate without
any glue or tape. One way to do it is sputtering Ti to Au film which will be
extremly time consuming since i need very thick Ti layer. Does anyone have
experience with adhesion of Au to Ti substrate that I can borrow?

All the best,
Ningdong