George K. Sievers - Burbank CA Eugene V. Clark - Burbank CA
Assignee:
General Electric Company - Schenectady NY
International Classification:
B22F 100
US Classification:
75255
Abstract:
Abradable coatings for turbine engine shrouds are formed from biscuits formed of silicon-diffused powdered alloy compositions which are processed with an HF precursor to strip oxides from the coating during processing, the alloy blends comprising MCrAl(Y) alloys in which n is 0, 1 or more.
Steam Turbine Components With Differentially Coated Surfaces
Eugene V. Clark - Tujunga CA Ralph J. Ortolano - Tujunga CA
International Classification:
F04D 2944
US Classification:
415200
Abstract:
Steam turbine fluid directing components are improved in erosive wear resistance by application of either relatively tougher and relatively less hard thermal spray or relatively harder and relatively less tough diffusion alloy surface modification to different portions of the component as a function of the locally greater or locally smaller angle of attack of solid particles on those portions in the use condition of the component.
Coating Methods, Coating Products And Coated Articles
George K. Sievers - Burbank CA Eugene V. Clark - Burbank CA
Assignee:
TMT Research Development, Inc. - Smith River CA
International Classification:
B22F 312 B22F 704
US Classification:
419 8
Abstract:
Abradable coatings for turbine engine shrouds are formed from biscuits formed of silicon-diffused powdered alloy compositions which are processed with an HE precursor to strip oxides from the coating during processing, the alloy blends comprising MCrAl(Y). sub. n alloys in which n is 0, 1 or more.
Coating Methods, Coating Products And Coated Articles
George K. Sievers - Burbank CA Eugene V. Clark - Tujunga CA
International Classification:
C22C 3302 C22C 3306
US Classification:
75230
Abstract:
Abradable coatings for turbine engine shrouds are formed from biscuits formed of silicon-diffused powdered alloy compositions which are processed with an HF precursor to strip oxides from the coating during processing, the alloy blends comprising MCrAl(Y). sub. n alloys in which n is 0, 1 or more.
Rhodium-Containing Superalloy Coatings And Methods Of Making Same
Gregor Baladjanian - Santa Monica CA Eugene V. Clark - Northridge CA
Assignee:
Chromalloy American Corporation - New York NY
International Classification:
C23C 902 C23F 1700
US Classification:
29197
Abstract:
Superalloy structures, such as high temperature components for jet engines and the like, are provided with aluminum-containing diffusion coatings enabling guantum extensions of service life through unique distributions therein of rhodium. The rhodium is prediffused into the alloy structure, and the resultant distribution minimizes aluminum migration into the structure and thus maximizes protective coating performance.
Steam or gas turbine components comprising chromium steel have their fluid directing surfaces protected from corrosion by a surface layer coating consisting essentially of major weight amount of nickel and minor weight amounts of zinc, optionally with boron added, over a nickel preplate which limits deleterious diffusion of zinc into the surface substrate.