Thermal barrier coatings

A metallic article having a thermal barrier coating system thereon, comprising:

• a metallic substrate having a composition comprised of nickel;
• and
• a thermal barrier coating on a surface of the metallic substrate, the thermal barrier coating comprised of,
• a metal-ceramic mixture, the metal-ceramic mixture comprised of yttria stabilized zirconia dispersed with aluminum particles and a filler material,
• nickel-aluminum intermetallic phases, the nickel-aluminum intermetallic phases formed by a diffusion process between the metal-ceramic mixture and the metallic substrate;
• and
• thermally grown oxides established during manufacturing or service life, the thermally grown oxides comprised of aluminum oxides.

A metallic article having a thermal barrier coating system thereon, comprising:

• a metallic substrate having a composition comprised of nickel;
• a thermal barrier coating on a surface of the metallic substrate, the thermal barrier coating comprised of,
• a metal-ceramic mixture, the metal-ceramic mixture comprised of yttria stabilized zirconia dispersed with aluminum particles and a filler material, where the yttria stabilized zirconia comprising the metal-ceramic mixture has an increasing concentration relative to the aluminum particles with increasing distance away from the surface of the metallic substrate in a direction substantially normal to the surface of the metallic substrate,
• nickel-aluminum intermetallic phases, the nickel-aluminum intermetallic phases formed by a diffusion process between the metal-ceramic mixture and the metallic substrate;
• thermally grown oxides established during manufacturing or service life, the thermally grown oxides comprised of aluminum oxides;
• and
• a ceramic topcoat comprised of yttria stabilized zirconia on the thermal barrier coating, such that the thermal barrier coating is between the ceramic topcoat and the metallic substrate.