Evidence of surface migration and formation of catalytically inactive Pt in corrosion studies of Pt/sup +/ implanted Ti

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This investigation is part of an ongoing research project directed at applying the techniques of ion implantation doping and ion scattering analysis to identify the mechanisms associated with the anodic dissolution of Ti-Pt alloys. The Ti-Pt alloys produced by ion implantation were electrochemically examined in hydrogen saturated 1 N H/sub 2/SO/sub 4/ by both potentiostatic polarization and open-circuit potential methods. In this study, Ti samples implanted to relatively high doses (5.4 x 10/sup 15/ to 2.9 x 10/sup 16/ atoms/cm/sup 2/) were examined by ion scattering analysis at various stages in the electrochemical measurements. Quantitative measurements showed that the majority ... continued below

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Pages: 25

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Appleton, B.R.; Kelly, E.J.; White, C.W.; Thompson, N.G. & Lichter, B.D. August 1, 1980.

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Description

This investigation is part of an ongoing research project directed at applying the techniques of ion implantation doping and ion scattering analysis to identify the mechanisms associated with the anodic dissolution of Ti-Pt alloys. The Ti-Pt alloys produced by ion implantation were electrochemically examined in hydrogen saturated 1 N H/sub 2/SO/sub 4/ by both potentiostatic polarization and open-circuit potential methods. In this study, Ti samples implanted to relatively high doses (5.4 x 10/sup 15/ to 2.9 x 10/sup 16/ atoms/cm/sup 2/) were examined by ion scattering analysis at various stages in the electrochemical measurements. Quantitative measurements showed that the majority of the implanted Pt accumulated on the surface during anodic dissolution and underwent large scale surface migration. Evidence is also presented for the transition of the Pt on the surface from a catalytically active to inactive state. Possible mechanisms for the observed catalytically inactive Pt are discussed.

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Pages: 25

Notes

NTIS, PC A02/MF A01.

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  • Ion beam modification of materials conference, Albany, NY, USA, 14 Jul 1980

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  • Report No.: CONF-800744-7(Draft)
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5105798
  • Archival Resource Key: ark:/67531/metadc1055449

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1980

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:25 p.m.

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Appleton, B.R.; Kelly, E.J.; White, C.W.; Thompson, N.G. & Lichter, B.D. Evidence of surface migration and formation of catalytically inactive Pt in corrosion studies of Pt/sup +/ implanted Ti, article, August 1, 1980; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1055449/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.