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Title: Effect of Al 2O 3 coating on fretting wear performance of Zr alloy

Abstract

Fretting wear caused by flow-induced vibration (FIV) is one of the predominant tribological failure modes in nuclear power plants and industry. This paper presents an experimental study of the effect on fretting performance of alumina (Al 2O 3) coatings produced by atomic layer deposition (ALD) on Zirlo (a Zr alloy), a common nuclear fuel cladding alloy. A coating with uniform thickness of about 750 nm was deposited onto a Zirlo flat. Because the typical thickness of fuel cladding is 1 mm, an ultra-thin coating is required. The hardness and elastic modulus of the ALD coating were measured by nano-indentation techniques. With a pin-on-flat contact configuration in low-amplitude reciprocating contact, fretting performance was measured for uncoated Zirlo, Al2O 3-coated Zirlo, and Al 2O 3-coated Zirlo followed by heat treatment. Results showed that the as-deposited Al 2O 3 coating provided slight improvement in fretting wear performance. However, the heat-treated coating showed two orders of magnitude reduction in fretting wear of the Zr alloy. Wear in the uncoated material involves some local plastic deformation and debris accumulation at the contact interface. In the Al 2O 3-coated material, wear occurred by transfer of transparent Al 2O 3 oxide into the steel pin counterface. Localizedmore » removal of coating from the Zirlo alloy flat resulted in a “shark whale” pattern in a scanning electron microscopy image. There was minimal debris accumulation with the heat-treated sample.« less

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1510251
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Wear
Additional Journal Information:
Journal Volume: 426-427; Journal Issue: PA; Journal ID: ISSN 0043-1648
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALD; Alumina; Fretting; Wear; Zirlo

Citation Formats

Lorenzo-Martin, C., Ajayi, O. O., Hartman, K., Bhattacharya, S., and Yacout, A.. Effect of Al2O3 coating on fretting wear performance of Zr alloy. United States: N. p., 2019. Web. doi:10.1016/j.wear.2018.12.024.
Lorenzo-Martin, C., Ajayi, O. O., Hartman, K., Bhattacharya, S., & Yacout, A.. Effect of Al2O3 coating on fretting wear performance of Zr alloy. United States. doi:10.1016/j.wear.2018.12.024.
Lorenzo-Martin, C., Ajayi, O. O., Hartman, K., Bhattacharya, S., and Yacout, A.. Wed . "Effect of Al2O3 coating on fretting wear performance of Zr alloy". United States. doi:10.1016/j.wear.2018.12.024.
@article{osti_1510251,
title = {Effect of Al2O3 coating on fretting wear performance of Zr alloy},
author = {Lorenzo-Martin, C. and Ajayi, O. O. and Hartman, K. and Bhattacharya, S. and Yacout, A.},
abstractNote = {Fretting wear caused by flow-induced vibration (FIV) is one of the predominant tribological failure modes in nuclear power plants and industry. This paper presents an experimental study of the effect on fretting performance of alumina (Al2O3) coatings produced by atomic layer deposition (ALD) on Zirlo (a Zr alloy), a common nuclear fuel cladding alloy. A coating with uniform thickness of about 750 nm was deposited onto a Zirlo flat. Because the typical thickness of fuel cladding is 1 mm, an ultra-thin coating is required. The hardness and elastic modulus of the ALD coating were measured by nano-indentation techniques. With a pin-on-flat contact configuration in low-amplitude reciprocating contact, fretting performance was measured for uncoated Zirlo, Al2O3-coated Zirlo, and Al2O3-coated Zirlo followed by heat treatment. Results showed that the as-deposited Al2O3 coating provided slight improvement in fretting wear performance. However, the heat-treated coating showed two orders of magnitude reduction in fretting wear of the Zr alloy. Wear in the uncoated material involves some local plastic deformation and debris accumulation at the contact interface. In the Al2O3-coated material, wear occurred by transfer of transparent Al2O3 oxide into the steel pin counterface. Localized removal of coating from the Zirlo alloy flat resulted in a “shark whale” pattern in a scanning electron microscopy image. There was minimal debris accumulation with the heat-treated sample.},
doi = {10.1016/j.wear.2018.12.024},
journal = {Wear},
number = PA,
volume = 426-427,
place = {United States},
year = {2019},
month = {4}
}

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This content will become publicly available on April 10, 2020
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