Abstract: A blade ring assembly including: a turbine blade ring extending in a circumferential direction about an axis; a component to be cooled, disposed on an inner circumferential side of the turbine blade ring; and an outer circumferential side component disposed on an outer circumferential side of the turbine blade ring. The turbine blade ring has a cooling medium intake port leading from an outer circumferential surface to an inner circumferential surface of the turbine blade ring. The outer circumferential side component includes: a first wall portion which covers at least a portion of the cooling medium intake port from the outer circumferential side of the turbine blade ring; and a second wall portion which extends from an end portion of the first wall portion on the axially downstream thereof toward the outer circumferential side of the turbine blade ring.

Abstract: In the catalyst-applying treatment, the sensitization treatment is carried out by dipping the base material which has been subjected to the preliminary treatment in a tin chloride solution applied with a predetermined amount of fluorine type anionic surfactant, and the activation treatment is carried out by dipping the base material which has been subjected to the preliminary treatment in a palladium chloride solution applied with a predetermined amount of fluorine type anionic surfactant.