Dear Tomas!

Many thanks for your reply.

We are working on the durability of the corona electrodes and MD dynamics in the assymetrical surface DBD.  The discharge is always filamentary for our conditions. The technical  application- various systems utilizing the mentioned scheme- from ozone generators to aerodynamic applications.

The changes we observe for Al electodes is the deep oxidizing of the electrode edge, with the formation of tiny (0.1um) perforation of the oxide layer. By now, I have found the similar structures in the description of the electrodes erosion in negative corona, where the process is associated with dielectric film breakdown in the beginning of Trichel pulse; and also in the description of microarc processing of the Al.

The question is whether it is a studied effect in surface processing by air/oxigen DBD plasmas?It seems it should be as both method and object are widely used.

Thanks in advance for your answer.

Best regards

Ivan