Surface Hardening by Nanoparticle Precipitation in Ni(Al,O)

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Description

Ion implantation of O and Al were used to form nanometer-size precipitates of NiO or Al{sub 2}O{sub 3} in the near-surface of Ni. The yield strengths of the treated layers were determined by nanoindentation testing in conjunction with finite-element modeling. The strengths range up to {approximately}5 GPa, substantially above values for hard bearing steels. These results agree quantitatively with predictions of dispersion-hardening theory based on the precipitate microstructures observed by transmission electron microscopy. Such surface hardening by ion implantation may be beneficial for Ni components in micro-electromechanical systems.

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9 pages

Creation Information

MYERS, SAMUEL M. Jr.; FOLLSTAEDT, DAVID M. & KNAPP, JAMES A. April 1, 2001.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Ion implantation of O and Al were used to form nanometer-size precipitates of NiO or Al{sub 2}O{sub 3} in the near-surface of Ni. The yield strengths of the treated layers were determined by nanoindentation testing in conjunction with finite-element modeling. The strengths range up to {approximately}5 GPa, substantially above values for hard bearing steels. These results agree quantitatively with predictions of dispersion-hardening theory based on the precipitate microstructures observed by transmission electron microscopy. Such surface hardening by ion implantation may be beneficial for Ni components in micro-electromechanical systems.

Physical Description

9 pages

Source

  • Other Information: PBD: 1 Apr 2001

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  • Report No.: SAND2001-0912
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/780314 | External Link
  • Office of Scientific & Technical Information Report Number: 780314
  • Archival Resource Key: ark:/67531/metadc722677

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • April 1, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 12, 2016, 6:17 p.m.

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MYERS, SAMUEL M. Jr.; FOLLSTAEDT, DAVID M. & KNAPP, JAMES A. Surface Hardening by Nanoparticle Precipitation in Ni(Al,O), report, April 1, 2001; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc722677/: accessed August 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.