Phil,

I assume you understand the mechanical and electrical implications of directly
bonding bulk PZT to stainless steel or silicon and their possible interaction
with your micro-motor.  Make sure you model the 3D electro-mechanical
consequences of such a structure before you continue.  You may find it helpful
to pre-etch the stainless or silicon so your mounting surface matches the zero
node surface in the PZT.

Harold Snyder