The problem is that if you want to use such a system as a heater, then nothing will work, even if you manage to apply a dense coating of nichrome on ceramic made of alumina. These materials have a large difference in the coefficients of thermal expansion, so when heated, a coating of nichrome necessarily peels off the substrate.
If you do not plan to heat the coating of nichrome, then the simplest method of applying it is this: cut the necessary piece of nichrome foil and glue it to the ceramic.
Thank you Dr Vadim Verlotski , I found this paper from MIT, they spray a thin film of Alumina, over which a thin film of Nichrome is sprayed, and the heater tended to handle far more heat fluxes than I am targeting.
http://web.mit.edu/lienhard/www/lheaters.pdf
I am not specialized in thermal spray, I guess, it might be because of the change of properties between the bulk material and the sprayed powder.
could you please comment, I want ti know more about this?
Any company with or lab related to thermal spray services. specially HVOF. You can find them close to your location. I can suggest you to contact the Thermal Spray Center CPT in Spain-Barcelona.