Re-polarising PZT

[szzuk]

I've depolarised some PZT and need to repolarise it so that it works again. The part I need to repolairse is noted at the link below.

http://www.noliac.com/Ring_actuators_-56.aspx

Does anyone have experience of doing this? I'm a bit lost.

Regards,

Szzuk.

 

[Sceadwian]

What you're talking about is for a hobbyist or experimenter very, very difficult, you have to raise the PZT to it's curie point with an extremely dense electric field and cool it before the field is removed. Basically it's just not done.

 

[szzuk]

I have an oven that could get it to the curie point and I guess I could put 1KV across the electrodes with the kit I currently have. From a brief glance it looks like I need 2KV per mm and as the part is 0.5mm thick around 1KV might be enough. It just looks like something will not work.