Comparative Dissolution Modes of Iron-Based Amorphous Alloys and Other Corrosion Resistant Polycrystalline Materials

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Metallic amorphous alloys or metallic glasses have been studied extensively for the last three decades due to their unique characteristics, including superior mechanical properties and corrosion resistance. Iron-based amorphous alloys have in general better corrosion resistance than their polycrystalline cousins such as the austenitic 18-8 stainless steel series (e.g. 316L SS). Fe-based amorphous alloys have even higher localized corrosion resistance than the nickel-based Alloy 22 under many laboratory tested conditions. Electrochemical laboratory tests have shown that when polycrystalline alloys such as Alloy 22 are anodically polarized in hot concentrated chloride brines, they dissolve unevenly following patterns associated with their crystalline ... continued below

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Rebak, R B; Hailey, P D; Day, S D & Farmer, J C March 6, 2007.

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Metallic amorphous alloys or metallic glasses have been studied extensively for the last three decades due to their unique characteristics, including superior mechanical properties and corrosion resistance. Iron-based amorphous alloys have in general better corrosion resistance than their polycrystalline cousins such as the austenitic 18-8 stainless steel series (e.g. 316L SS). Fe-based amorphous alloys have even higher localized corrosion resistance than the nickel-based Alloy 22 under many laboratory tested conditions. Electrochemical laboratory tests have shown that when polycrystalline alloys such as Alloy 22 are anodically polarized in hot concentrated chloride brines, they dissolve unevenly following patterns associated with their crystalline character. However, amorphous alloys, when polarized to even higher potentials than the polycrystalline alloys, they dissolve in a desirable uniform manner. This is because the amorphous Fe-based alloys do not offer defects in the metal that can be preferentially attacked. Comparative studies will also be presented on the dissolution modes of Ni-gadolinium and borated stainless steels.

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PDF-file: 3 pages; size: 69 Kbytes

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  • Presented at: Materials Science and Technology 2007 (MS&T'07), Detroit, MI, United States, Sep 16 - Sep 20, 2007

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  • Report No.: UCRL-PROC-228828
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 917907
  • Archival Resource Key: ark:/67531/metadc885655

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  • March 6, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 2, 2016, 10:22 p.m.

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Rebak, R B; Hailey, P D; Day, S D & Farmer, J C. Comparative Dissolution Modes of Iron-Based Amorphous Alloys and Other Corrosion Resistant Polycrystalline Materials, article, March 6, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc885655/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.