Supercharge Your Innovation With Domain-Expert AI Agents!

Applying bond coat to engine components using cold spray

a technology of bond coat and engine components, applied in the direction of machines/engines, mechanical equipment, plasma techniques, etc., can solve the problems of limiting throughput, limiting the size of the parts that can be processed, and affecting the service life of the engine, so as to reduce cycle times and maintenance costs

Inactive Publication Date: 2006-09-28
UNITED TECH CORP
View PDF13 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a process for applying a coating to a component used in an engine using a non-oxidizing carrier gas so that the powder coating material plastically deforms without melting and bonds to the at least one surface upon impact with the at least one surface. This process reduces cycle times and maintenance costs and can be used with any size component. The technique of cold spray is particularly useful for applying bond coats to airfoil portions of turbine blades, vanes or combustion chamber liners for protection against oxidation.

Problems solved by technology

Operation and maintenance of LPPS systems is expensive and time consuming, limiting throughput.
The size of a given chamber limits the size of the parts that can be processed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Applying bond coat to engine components using cold spray
  • Applying bond coat to engine components using cold spray
  • Applying bond coat to engine components using cold spray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

)

[0013] The present invention relates to a process for applying a coating to a component used in an engine. For example, the process of the present invention may be used to apply a MCrAlY coating to at least one surface of an airfoil portion on a turbine blade where M is Ni and / or Co or a variation. It may also be used to apply a bond coat to a combustion chamber liner used in rocket engines.

[0014] The cold spray process for depositing powdered materials onto portions of a component which needs to be restored is advantageous in that it provides sufficient energy to accelerate particles to high enough velocities such that, upon impact, the particles plastically deform and bond to the surface of the component being restored or onto a previously deposited layer. The cold spray process allows the build up of a relative dense coating or structural deposit. Cold spray does not metallurgically transform the particles from their solid state.

[0015] When preparing to coat an article or comp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
speedaaaaaaaaaa
Login to View More

Abstract

A process for applying a coating to a component used in an engine is provided. The process includes the steps of providing a component with at least one surface to be coated, and depositing at least one layer of powder coating material onto the at least one surface using a non-oxidizing carrier gas so that the powder coating material plastically deforms without melting and bonds to the at least one surface upon impact with the at least one surface. The process of the present invention has particular utility in applying bond coats to airfoil portions of turbine blades or vanes and to applying bond coats to combustion chamber liners.

Description

BACKGROUND OF THE INVENTION [0001] (1) Field of the Invention [0002] The present invention relates to a process for applying a coating to a component, such as a turbine blade or a combustion chamber liners, used in an engine. [0003] (2) Prior Art [0004] Currently, bond coats are applied using low-pressure plasma spray (LPPS). Operation and maintenance of LPPS systems is expensive and time consuming, limiting throughput. Also, LPPS requires a vacuum chamber. The size of a given chamber limits the size of the parts that can be processed. [0005] Cold gas dynamic spraying or “cold spray” has been recently introduced as a new metallization spray technique to deposit powder metal without inclusions onto a substrate. A supersonic jet of helium and / or nitrogen is formed by a converging / diverging nozzle and is used to accelerate the powder particles toward the substrate to produce cold spray deposits or coatings. Deposits adhere to the substrate and previously deposited layers through plasti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): C23C4/08
CPCC23C24/04F01D5/288F05D2230/90F05D2300/611
Inventor DEBICCARI, ANDREWFRELING, MELVINHAYNES, JEFFREY D.
Owner UNITED TECH CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com