Final Report for the Study on S-Implanted Alloy 22 in 1 M NaCl Solutions

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The objective of this study was to examine the effects of high levels of S in the near-surface region on the passivity of Alloy 22, a corrosion resistant Ni-Cr-Mo alloy, in deaerated 1 M NaCl solution. Near-surface concentrations of S up to 2 at.% were achieved in Alloy 22 test specimens by implanting them with S. The S-implanted samples were then evaluated in short-term electrochemical tests in the salt solution and subsequently analyzed with X-ray Photoelectron Spectroscopy (XPS) for film thickness and composition. Specimens tested included non-implanted and annealed Alloy 22 samples, samples implanted with S, and “blanks” implanted with ... continued below

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Windisch, Charles F.; Baer, Donald R.; Jones, R. H. & Engelhard, Mark H. November 1, 2005.

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  • Pacific Northwest National Laboratory (U.S.)
    Publisher Info: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States), Environmental Molecular Sciences Laboratory (EMSL)
    Place of Publication: Richland, Washington

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Description

The objective of this study was to examine the effects of high levels of S in the near-surface region on the passivity of Alloy 22, a corrosion resistant Ni-Cr-Mo alloy, in deaerated 1 M NaCl solution. Near-surface concentrations of S up to 2 at.% were achieved in Alloy 22 test specimens by implanting them with S. The S-implanted samples were then evaluated in short-term electrochemical tests in the salt solution and subsequently analyzed with X-ray Photoelectron Spectroscopy (XPS) for film thickness and composition. Specimens tested included non-implanted and annealed Alloy 22 samples, samples implanted with S, and “blanks” implanted with Ar as an ion that would simulate the “damage” of S implantation without the chemical effect. A sample of S-implanted Alloy 22 was also exposed to solution for 29 days and analyzed for evidence of S accumulation at the surface over longer times.

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  • Report No.: PNNL-15380
  • Grant Number: AC05-76RL01830
  • DOI: 10.2172/968210 | External Link
  • Office of Scientific & Technical Information Report Number: 968210
  • Archival Resource Key: ark:/67531/metadc933058

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Creation Date

  • November 1, 2005

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Nov. 18, 2016, 3:50 p.m.

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Windisch, Charles F.; Baer, Donald R.; Jones, R. H. & Engelhard, Mark H. Final Report for the Study on S-Implanted Alloy 22 in 1 M NaCl Solutions, report, November 1, 2005; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc933058/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.