1
David N Duhl, Walter E Olson: Heat treated superalloy single crystal article and process. United Technologies Corporation, Charles E Sohl, June 24, 1980: US04209348 (62 worldwide citation)

Nickel base superalloy single crystal articles formed of a particular compositon and heat treated are described as is the process employed. The resultant articles are substantially free from the grain boundary strengtheners such as carbon, boron, and zirconium and contain only a limited amount of co ...


2
Walter E Olson, Dinesh K Gupta: Aluminide coating for superalloys. United Technologies Corporation, J M Rashid, June 12, 1990: US04933239 (46 worldwide citation)

A protective coating system for superalloys is described. The coating is an active element enriched aluminide, and can be formed by aluminizing an overlay coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the overlay coating and into the substrate. The c ...


3
Edward J Grybowski, Walter E Olson: Process for applying gas phase diffusion aluminide coatings. United Technologies Corporation, James M Rashid, December 10, 1991: US05071678 (40 worldwide citation)

A process for forming a diffusion coating to the surface of a metal article. The process is particularly adapted for forming diffusion aluminide coatings on metal blades and vanes used in gas turbine engines. According to the invention, halide vapor is caused to react with a source of aluminum to fo ...


4
Walter E Olson, Dinesh K Gupta: Oxide containing MCrAlY-type overlay coatings. United Technologies Corporation, James M Rashid, January 11, 1994: US05277936 (24 worldwide citation)

The oxidation resistance of MCrAlY-type overlay coatings is improved by incorporating small discrete oxide particles into the coating. The particles are preferably yttrium oxide, and the coating is applied by simultaneously plasma spraying MCrAlY-type powder particles and oxide particles onto a subs ...


5
Walter E Olson, Michael S Milaniak, Clark T Okawa: Method for applying aluminide coatings to superalloys. United Technologies Corporation, James M Rashid, June 8, 1993: US05217757 (22 worldwide citation)

A powder mixture for applying gas phase aluminide coatings to nickel or cobalt base superalloys is described. A preferred mixture consists essentially of Co.sub.2 Al.sub.5, NH.sub.4 F.HF, and chromium metal. The mixture is substantially free of aluminum oxide.


6
Walter E Olson, Dinesh K Gupta: Yttrium enriched aluminide coating for superalloys. United Technologies Corporation, James M Rashid, March 20, 1990: US04910092 (17 worldwide citation)

A protective coating system for superalloys is described. The coating is an yttrium enriched aluminide, and can be formed by aluminizing an MCrAlY coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the MCrAlY coating and into the substrate. The coating sy ...


7
William Patrick Allen, Walter E Olson, Dilip M Shah, Alan David Cetel: Article having corrosion resistant coating. United Technologies Corporation, F Tyler Morrison, August 20, 2002: US06435830 (17 worldwide citation)

According to the invention, an article that is exposed to high temperatures, e.g., over 1000° C. during operation is disclosed. In one embodiment, a turbine blade for a gas turbine engine includes a directionally solidified metallic substrate, e.g., a superalloy, which defines an airfoil, a root and ...


8
Walter E Olson, Norman Pietruska, Peter Jon Draghi: Low activity localized aluminide coating. United Technologies Company, John E Whitman Breed Abbott & Morgan Boyd Esq, April 4, 2000: US06045863 (13 worldwide citation)

The invention includes a low activity localized aluminide coating for a metallic article made by positioning a coating material, preferably in the form of a tape, on a portion of the article. The coating material comprises a binder, a halide activator, an aluminum source, and an inert ceramic materi ...


9
William Patrick Allen, Walter E Olson: Article having corrosion resistant coating. United Technologies Corporation, F Tyler Morrison, August 20, 2002: US06435826 (13 worldwide citation)

According to the invention, an article that is exposed to high temperatures, e.g., over 1000° C. during operation is disclosed. In one embodiment, a turbine blade for a gas turbine engine includes a directionally solidified metallic substrate, e.g., a superalloy, which defines an airfoil, a root and ...


10
William Patrick Allen, Walter E Olson: Article having corrosion resistant coating. United Technologies Corporation, F Tyler Morrison, August 20, 2002: US06435835 (13 worldwide citation)

According to the invention, an article that is exposed to high temperatures, e.g., over 1000° C. during operation is disclosed. In one embodiment, a turbine blade for a gas turbine engine includes a directionally solidified metallic substrate, e.g., a superalloy, which defines an airfoil, a root and ...