jameswwt

Hi,
just hoping to get some share here on ceramic coatings for exhaust manifold, turbo housing, etc.
My question is :
1) Is ceramic coating needs a base coat like any metal coat materials via plasma spray in order to have high thermal barrier capabilities?
2) Which is much durable and higher resistant to high temp, wear & corrosion resistant? Plasma spray or Ceramic spray paint type?

Thanks.