Plasma sprayed mcraly coating
Patent
·
OSTI ID:6470078
An article with an improved mcraly coating is disclosed wherein a plasma sprayed mcraly coating is provided with a metallic envelope and then hot isostatically pressed to densify the coating and interdiffuse the envelope. Thus, the substrate is provided with a coating which in its bulk is the densified plasma coating with an outer surface zone which is enriched in a metal which enhances the oxidation-corrosion protective properties of the coating. Preferred coatings have a standard cocraly bulk with a metal-enriched surface zone of about 0.02 mm depth. When aluminum is added the surface zone is comprised by weight percent of about 60 co, 20 cr and 22 al. With chromium the surface zone is about 50 co, 43 cr and 8.5 al.
- Assignee:
- United Technologies Corp
- Patent Number(s):
- US 4246323
- OSTI ID:
- 6470078
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330103 -- Internal Combustion Engines-- Turbine
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
COBALT ALLOYS
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
DEPOSITION
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
NICKEL ALLOYS
PLASMA ARC SPRAYING
SPRAY COATING
SURFACE COATING
YTTRIUM ALLOYS
330103 -- Internal Combustion Engines-- Turbine
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
COBALT ALLOYS
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
DEPOSITION
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
NICKEL ALLOYS
PLASMA ARC SPRAYING
SPRAY COATING
SURFACE COATING
YTTRIUM ALLOYS