US Patent Application 18202036. MULTILAYER COATING FOR OXIDATION PROTECTION simplified abstract

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MULTILAYER COATING FOR OXIDATION PROTECTION

Organization Name

Raytheon Technologies Corporation

Inventor(s)

Olivier H. Sudre of Glastonbury CT (US)

Evan B. Callaway of Santa Barbara CA (US)

Daniel L. Becerra of West Hartford CT (US)

Mary Colby of West Hartford CT (US)

Cristal Chan of East Hampton CT (US)

MULTILAYER COATING FOR OXIDATION PROTECTION - A simplified explanation of the abstract

This abstract first appeared for US patent application 18202036 titled 'MULTILAYER COATING FOR OXIDATION PROTECTION

Simplified Explanation

The patent application describes a coated fiber structure for use in a ceramic matrix composite.

  • The structure consists of a fiber with a coating system applied around it.
  • The coating system includes an interface coating layer that directly contacts the fiber.
  • The interface coating layer is made of either boron nitride or a boron-doped pyrocarbon.
  • There is at least one intermediate layer that extends coaxially with and directly contacts the interface layer.
  • The intermediate layer is made of either silicon or boron nitride.
  • An outer layer is also present, extending coaxially with and directly contacting the interface layer.
  • The interface coating layer, the intermediate layer(s), and the outer layer may contain a metallic element.


Original Abstract Submitted

A coated fiber structure for use in a ceramic matrix composite comprises a fiber and a coating system applied to and circumscribing the fiber. The coating system comprises an interface coating layer in direct contact with the fiber, the interface coating layer comprising one of boron nitride and a boron-doped pyrocarbon, at least one intermediate layer extending coaxially with and in direct contact with the interface layer, the at least one intermediate layer comprising at least one of silicon and boron nitride, and an outer layer extending coaxially with and in direct contact with the interface layer. At least one of the interface coating layer, the at least one intermediate layer, and the outer layer comprises a metallic element.

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