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Three phase bond coat coating system for superalloys

A nickel-based superalloy and coating technology, which is applied in the direction of metal material coating process, coating, metal layered products, etc., can solve problems such as less than ideal properties

Inactive Publication Date: 2019-03-01
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to date, coating systems employing bond coats often have less than ideal properties such as substrate compatibility and thermal barrier coating (TBC) peel life

Method used

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  • Three phase bond coat coating system for superalloys
  • Three phase bond coat coating system for superalloys
  • Three phase bond coat coating system for superalloys

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Embodiment Construction

[0038] Embodiments of the present invention generally relate to coating compositions, to coating systems comprising the coating compositions on nickel-based superalloy substrates, and to methods related to the coating compositions and coating systems.

[0039] While the invention is susceptible to embodiments in many different forms, certain embodiments of the invention have been shown and described. It should be understood, however, that the disclosure is considered as exemplifying the principles of the invention and is not intended to limit the invention to the embodiments shown.

[0040] Embodiments of the coating compositions and coating systems of the present invention may be used, for example, to protect components that operate in environments characterized by relatively high temperatures and thus may be subjected to severe thermal stress and thermal cycling. Notable non-limiting examples of such components include high and low pressure turbine nozzles and blades, shroud...

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Abstract

Provided is a nickel-based coating composition containing cobalt, chromium, aluminum, tantalum, and nickel. The coating composition has a three phase [gamma], [gamma]', [beta] microstructure wherein at least 5 volume % of the coating composition is present in the [beta] phase. Also provided are coating systems containing the coating composition, articles having the coating composition or coating system, and methods for protecting nickel-based superalloy substrates using the coating composition or coating system.

Description

Background technique [0001] The present invention includes embodiments directed to a coating composition and coating system for superalloys. More specifically, the present invention includes embodiments involving coating systems employing nickel-based three-phase gamma, gamma', beta coating compositions on nickel-based superalloy substrates. [0002] Superalloy components are commonly used in a variety of applications including, for example, the aircraft engine, gas turbine, and marine turbine industries. Often, the quality of superalloy components is essential to their successful operation, which may involve operation in harsh thermal environments such as in gas turbine engines. Accordingly, certain superalloy components that are susceptible to damage are optionally protected by one or more coatings (eg, bond coats) that are used to help maintain the quality of the superalloy component. However, to date, coating systems employing bond coats often have less than ideal proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C30/00C22C19/00C22C19/05
CPCC23C30/00C22C19/007C22C19/055B32B15/01C22C19/058Y02T50/60B32B15/043B32B2603/00
Inventor V·S·德希德哈达D·M·利普金A·铃木
Owner GENERAL ELECTRIC CO