Ceramic Paint for Cleaning

[Ramin]

Hi Dears,

I am looking for some information about "Ceramic Paint" for cleaning of the TBC coated layer after APS process. There are some black lines on surface.

Is there any proper thing to use for this purpose? How can I found the best one with yellow color to clean of coated layer on a big part after APS operation?

Thank you for your comment and guidance.

Regards,
Ramin