Patent ID: 8182210

Claim:
A gas turbine comprising: a turbine housing; a rotatable turbine rotor having a plurality of turbine blades; and at least one heat shield segment for a stator disposed radially between the rotor and the housing and attached to the housing, the at least one heat shield segment having a profile with a curved section in at least one region in an axial direction of the gas turbine and having a radial outer surface and including: a first boss extending in a circumferential direction of the gas turbine in a region of the curved section and in a first end area in the circumferential direction disposed on the radial outer surface; a rib disposed at the first end area extending at least partially in a longitudinal direction of the gas turbine, wherein the first boss protrudes from the rib in the circumferential direction disposed on the radial outer surface; and a second boss extending in the circumferential direction in a region of the curved section and in a second area opposite to the first end area disposed on the radial outer surface, wherein the profile includes a two-stepped form in the circumferential direction in an area of the first boss, wherein a first step extends from the radial outer surface to the first boss and a second step extends from the first boss to the rib.