Anti-Fretting Wear Coating for Substrates

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Patent relating to an anti-fretting wear coating for substrates.

Physical Description

12 p. : ill.

Creation Information

Scharf, Thomas W.; Mohseni, Hamidreza & Tiley, Jaimie S. May 23, 2013.


This patent is part of the collection entitled: UNT Scholarly Works and was provided by the UNT College of Engineering to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 423 times. More information about this patent can be viewed below.


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Patent relating to an anti-fretting wear coating for substrates.

Physical Description

12 p. : ill.


Abstract: A method and chemical composition and material structure for improving fretting wear in substrates, particularly carbon-carbon composite (CCC). The invention relates to trilayer coatings, comprising a base of hard ZrO2, a middle layer of Al2O3, and atop layer of lubricious ZnO. The coatings of the present invention exhibit conformality and pore-filling down to approximately 100 microns into a carbon-carbon composite to which they are applied. The methods for preparing the coatings include a chemical vapor infiltration route, such as an atomic layer deposition (ALD) process, to uniformly and conformally coat the porous and open structure of CCC with a solid lubricant trilayer of ZnO/Al2O3/ZrO2 that results in significant improvement (65%) in fretting wear.

Related U.S. Application Data: Provisional application number 61/488583, filed on May 20, 2011.



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  • Patent Number: US2013/0130014A1
  • Government Documents No.: 13/475616
  • Archival Resource Key: ark:/67531/metadc330319


This patent is part of the following collection of related materials.

UNT Scholarly Works

Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.

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Submitted Date

  • May 18, 2012

Accepted Date

  • May 23, 2013

Creation Date

  • May 23, 2013

Added to The UNT Digital Library

  • Aug. 8, 2014, 6:44 a.m.

Description Last Updated

  • Oct. 24, 2023, 1:03 p.m.

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Scharf, Thomas W.; Mohseni, Hamidreza & Tiley, Jaimie S. Anti-Fretting Wear Coating for Substrates, patent, May 23, 2013; [Washington D.C.]. ( accessed April 20, 2024), University of North Texas Libraries, UNT Digital Library,; crediting UNT College of Engineering.

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