Observation of Localized Corrosion of Ni-Based Alloys Using Coupled Orientation Imaging Microscopy and Atomic Force Microscopy

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We present a method for assessing the relative vulnerabilities of distinct classes of grain boundaries to localized corrosion. Orientation imaging microscopy provides a spatial map which identifies and classifies grain boundaries at a metal surface. Once the microstructure of a region of a sample surface has been characterized, a sample can be exposed to repeated cycles of exposure to a corrosive environment alternating with topographic measurement by an atomic force microscope in the same region in which the microstructure had been mapped. When this procedure is applied to Ni and Ni-based alloys, we observe enhanced attack at random grain boundaries … continued below

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Bedrossian, P. J. November 24, 1999.

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We present a method for assessing the relative vulnerabilities of distinct classes of grain boundaries to localized corrosion. Orientation imaging microscopy provides a spatial map which identifies and classifies grain boundaries at a metal surface. Once the microstructure of a region of a sample surface has been characterized, a sample can be exposed to repeated cycles of exposure to a corrosive environment alternating with topographic measurement by an atomic force microscope in the same region in which the microstructure had been mapped. When this procedure is applied to Ni and Ni-based alloys, we observe enhanced attack at random grain boundaries relative to special boundaries and twins in a variety of environments.

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2,200 Kilobytes pages

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  • Materials Research Society 1999 Fall Conference, Boston, MA (US), 11/19/1999--12/03/1999

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  • Report No.: UCRL-JC-136608
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 792714
  • Archival Resource Key: ark:/67531/metadc740971

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  • November 24, 1999

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 1:48 p.m.

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Bedrossian, P. J. Observation of Localized Corrosion of Ni-Based Alloys Using Coupled Orientation Imaging Microscopy and Atomic Force Microscopy, article, November 24, 1999; California. (https://digital.library.unt.edu/ark:/67531/metadc740971/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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