A method for making a honeycomb seal member for a turbine, comprising, in sequence: forming a diffusion aluminide coating on all surfaces (16, 28, 29, 30, 31) of a honeycomb seal to form a coated honeycomb seal; one of the surfaces comprising a seal brazing surface; and brazing the seal brazing surface of the coated honeycomb seal to a substrate brazing surface of a seal substrate with a braze material comprising a nickel-based, cobalt-based or iron-based superalloy to form a braze joint wherein the braze material forms a fillet and wetting of the walls of the honeycomb seal is limited to the area of the fillet, which is proximate the seal brazing surface of the honeycomb seal and the substrate brazing surface of the seal substrate 50, wherein forming the diffusion aluminide coating comprises: preparing a gel aluminide slurry comprising a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with aluminum in the aluminum alloy, and a binder containing at least one organic polymer; applying the gel aluminide slurry onto the surfaces of the honeycomb seal; heating the honeycomb seal to remove the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the surfaces of the honeycomb seal to deposit aluminum on the surfaces, and diffuse the deposited aluminum into the surfaces of the honeycomb seal to form a diffusion aluminide coating, wherein the binder is removed to form a readily removable ash residue. forming a diffusion aluminide coating on all surfaces (16, 28, 29, 30, 31) of a honeycomb seal to form a coated honeycomb seal; one of the surfaces comprising a seal brazing surface; and brazing the seal brazing surface of the coated honeycomb seal to a substrate brazing surface of a seal substrate with a braze material comprising a nickel-based, cobalt-based or iron-based superalloy to form a braze joint wherein the braze material forms a fillet and wetting of the walls of the honeycomb seal is limited to the area of the fillet, which is proximate the seal brazing surface of the honeycomb seal and the substrate brazing surface of the seal substrate 50, wherein forming the diffusion aluminide coating comprises: preparing a gel aluminide slurry comprising a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with aluminum in the aluminum alloy, and a binder containing at least one organic polymer; applying the gel aluminide slurry onto the surfaces of the honeycomb seal; heating the honeycomb seal to remove the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the surfaces of the honeycomb seal to deposit aluminum on the surfaces, and diffuse the deposited aluminum into the surfaces of the honeycomb seal to form a diffusion aluminide coating, wherein the binder is removed to form a readily removable ash residue. preparing a gel aluminide slurry comprising a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with aluminum in the aluminum alloy, and a binder containing at least one organic polymer; applying the gel aluminide slurry onto the surfaces of the honeycomb seal; heating the honeycomb seal to remove the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the surfaces of the honeycomb seal to deposit aluminum on the surfaces, and diffuse the deposited aluminum into the surfaces of the honeycomb seal to form a diffusion aluminide coating, wherein the binder is removed to form a readily removable ash residue.