Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Coating – specific composition or characteristic
Patent
1982-12-10
1985-01-08
Scott, Samuel
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Coating, specific composition or characteristic
415200, 415212R, 416229A, 416241B, F01D 514
Patent
active
044925220
ABSTRACT:
A blade for a fluid flow engine, especially a gas turbine, has a protective coating against injurious attack by the propellant or working medium. A metal blade having a diffusion layer or a sprayed coating for inhibiting corrosion is known. Such coating renders the blade highly resistant against heavily erosive and corrosive attack, especially by pulverized coal combustion gas or similar agents. The present blade is made of ceramic material, especially a dense ceramic material with a surface layer of at least one of the following materials: TiN, TiC, B.sub.4 C, BN and titanium carbon nitride. These materials are easy to apply and provide a good bond with the ceramic material. If the ceramic materials are silicon carbide (SiC) or silicon nitride (Si.sub.3 N.sub.4) an especially good bond is achieved. This coating strongly resists removal, as it does oxidation and heat. Local removal down to the ceramic material, as it may result from rather long service, is recognizable immediately. These coating materials can be applied to give adequate quality and satisfactory repeatability by using the known CVD (chemically vapor deposited) or the PVD (physical vapor deposited) process.
REFERENCES:
patent: 2962388 (1960-11-01), Ruppert et al.
patent: 3294366 (1966-12-01), Coplin
patent: 3637320 (1972-01-01), Wakefield et al.
patent: 3637325 (1972-01-01), Morley
patent: 3699623 (1972-10-01), Kreider
patent: 3911188 (1975-10-01), Torti et al.
patent: 4233342 (1980-11-01), Aichert et al.
patent: 4241110 (1980-12-01), Ueda et al.
patent: 4318672 (1982-03-01), Hansen
E. J. Stefanides, "Alpha SiC Ceramics Solves Heat, Wear Problems", 5-26-80, vol. 36, No. 10, pp. 114+115.
Huether Werner
Rossmann Axel
Bowman B. J.
Fasse W. G.
Kane, Jr. D. H.
MTU Motoren-und Turbinen-Union Muenchen GmbH
Scott Samuel
LandOfFree
Blade for a fluid flow engine and method for manufacturing the b does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blade for a fluid flow engine and method for manufacturing the b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blade for a fluid flow engine and method for manufacturing the b will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-112134