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Environmentally Resistant Patches And Delivery Systems

An environmental tolerance and repair technology, applied in the field of repair repair, can solve the problems of high pressure cooling air leakage of combustion gas, disturbed airflow, and reducing the load bearing capacity of components

Inactive Publication Date: 2015-06-24
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If allowed to grow unmoderated, such cavities can reduce the load-carrying capacity of the member, disrupt airflow or even develop into full-thickness holes that lead to the absorption of combustion gases or the leakage of high-pressure cooling air, thereby negatively affecting the machine's performance. Operating Efficiency and Durability

Method used

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  • Environmentally Resistant Patches And Delivery Systems
  • Environmentally Resistant Patches And Delivery Systems
  • Environmentally Resistant Patches And Delivery Systems

Examples

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Embodiment Construction

[0076] One or more specific embodiments of the invention will be described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation are described in the specification. It should be understood that in the development of any such actual implementation, as in any engineering or design project, many implementation-specific decisions must be made to achieve the developer's specific goals, such as adherence to system-related as well as industry-related constraints, which May vary by implementation. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0077] When introducing various embodiments of the present invention, the articles "a," "an," "the," and "said" are intended to mean that there are one or more elements....

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Abstract

An environmentally resistant patch (50) includes one or more rare earth silicates, wherein an inorganic composition of the environmentally resistant patch includes, once cured, from about 80 mole percent to about 100 mole percent of a rare earth monosilicate and / or rare earth disilicate composition and from about 0 mole percent to about 20 mole percent of an inorganic additive, and, wherein the environmentally resistant patch (50) has, once cured, an adhesive strength of at least about 3 MPa and a coefficient of thermal expansion of from about 3.5 x 10 -6 / °C to about 7.5 x 10 -6 / °C.

Description

[0001] Statement Regarding Federally Funded Research and Development [0002] This invention was made in part under Government Contract No. DE-FC26-05NT42643 awarded by the Department of Energy. The government has certain rights in this invention. technical field [0003] The subject matter disclosed herein relates to prosthetic repair, and more particularly, to environmentally resistant repairs for filling voids in silicon-containing components, such as silicon carbide (SiC)-based ceramic matrix composites (CMCs). thing. Background technique [0004] Environmental barrier coatings (EBC) protect gas turbine components fabricated from silicon-containing substrates from in-service exposure to potentially harmful chemical environments. Examples of silicon-containing substrates include SiC-based CMC, SiC-based or silicon nitride (Si 3 N 4 ) monolithic ceramics as well as metal silicides such as MO-Si-B and Nb-Si based composites. Examples of EBCs include alkaline earth alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16
CPCC04B41/85C04B41/009C04B41/5024F01D5/288F05D2300/15Y10T428/20C04B41/4539C04B41/4576C04B35/806C04B35/565C04B35/584B32B18/00B32B2250/02C04B35/5156
Inventor H.C.罗伯茨D.M.利普金N.E.安托利诺
Owner GENERAL ELECTRIC CO