Gas turbine vane attachment

Base hooks (110, 112) of a vane (106) includes an approximate two times thicker radial geometry, with dimensioning and tolerancing that results in a line-line to loose fit on the forward OD hook surface (114) and the aft ID hook surface (116). Tolerances thus stack up on the opposite, non-critical surfaces of the hooks (the forward ID hook surface (118) and the aft OD hook surface (120)). The base of the vane (106) is curved to match that of the casing (102). An interface between the vane base and the casing groove (102) includes a metal alloy liner (140). Also, a wear coating is provided on the vane attachment hooks (110, 112). The liner (140) protects the casing groove (102) from wear damage, while the hook coating and the liner (140) provide a wear coupling between the vane base and the casing (102) that provides a barrier between the vane bases and the casing (102) to decrease the wear rate.