Oxidation-resistant interfacial coatings for fiber-reinforced ceramic composites

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Description

A ceramic-matrix composite having a multilayered interfacial coating adapted to protect the reinforcing fibers from long-term oxidation, while allowing these to bridge the wake of advancing cracks in the matrix, is provided by selectively mismatching materials within adjacent layers of the interfacial coating, the materials having different coefficients of thermal expansion so that a low toughness interface region is created to promote crack deflection either within an interior layer of the mismatched interfacial coating or between adjacent layers of the mismatched interfacial coating.

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26 pages

Creation Information

Lara-Curzio, Edgar; More, Karren L. & Lee, Woo Y. April 22, 1999.

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This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 16 times . More information about this patent can be viewed below.

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Description

A ceramic-matrix composite having a multilayered interfacial coating adapted to protect the reinforcing fibers from long-term oxidation, while allowing these to bridge the wake of advancing cracks in the matrix, is provided by selectively mismatching materials within adjacent layers of the interfacial coating, the materials having different coefficients of thermal expansion so that a low toughness interface region is created to promote crack deflection either within an interior layer of the mismatched interfacial coating or between adjacent layers of the mismatched interfacial coating.

Physical Description

26 pages

Notes

OSTI as DE00808009

Source

  • Patent File Date: 1999 Apr 22

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  • Report No.: PATENTS-US--A9296286
  • Grant Number: AC05-96OR22464
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 808009
  • Archival Resource Key: ark:/67531/metadc739580

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • April 22, 1999

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • Dec. 16, 2015, 1:05 p.m.

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Lara-Curzio, Edgar; More, Karren L. & Lee, Woo Y. Oxidation-resistant interfacial coatings for fiber-reinforced ceramic composites, patent, April 22, 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc739580/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.