TURBOMACHINE AIRFOIL HAVING A VARIABLE THICKNESS THERMAL BARRIER COATING

An airfoil (100) includes a root (102) and a tip (104), which define a span (128) of the airfoil (100) therebetween. The airfoil (100) also includes a leading edge (124) and a trailing edge (126) downstream of the leading edge (124) along a flow direction. The leading edge (124) and the trailing edge (126) each extend across the span (128) of the airfoil (100) from the root (102) to the tip (104). The airfoil (100) further includes a pressure side surface (120) and a suction side surface (122). The airfoil (100) also includes a thermal barrier coating (108) on the pressure side surface (120) and the suction side surface (122). The thermal barrier coating (108) includes a base layer (110) and a top coat (112). A thickness of the base layer (110) varies across each of the pressure side surface (120) and the suction side surface (122) with a maximum thickness of the base layer (110) at the leading edge (124).