Coating systems and methods therefor

A coating system and a method of forming the coating system capable of enabling components to survive in high temperature environments, such as the hostile thermal environment of a gas turbine. The coating system is formed of a ceramic powder having powder particles (30) each having an inner core (32) formed of a first material and an outer region (34) formed of a second material on the surface of the inner core (32). The inner core (32) has a lower thermal conductivity than the outer region (34) and the outer region (34) has improved erosion resistance relative to the inner core (32).