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Title: Enhanced Corrosion Resistance of Iron-Based Amorphous Alloys

Abstract

Iron-based amorphous alloys possess enhanced hardness and are highly resistant to corrosion, which make them desirable for wear applications in corrosive environments. It was of interest to examine the behavior of amorphous alloys during anodic polarization in concentrated salt solutions and in the salt-fog testing. Results from the testing of one amorphous material (SAM2X5) both in ribbon form and as an applied coating are reported here. Cyclic polarization tests were performed on SAM2X5 ribbon as well as on other nuclear engineering materials. SAM2X5 showed the highest resistance to localized corrosion in 5 M CaCl{sub 2} solution at 105 C. Salt fog tests of 316L SS and Alloy 22 coupons coated with amorphous SAM2X5 powder showed resistance to rusting. Partial devitrification may be responsible for isolated pinpoint rust spots in some coatings.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913546
Report Number(s):
UCRL-PROC-229951
TRN: US200802%%865
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: 2007 ASME Pressure Vessels and Piping Division Conference, San Antonio, TX, United States, Jul 22 - Jul 26, 2007
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; COATINGS; CORROSION; CORROSION RESISTANCE; FOG; HARDNESS; NUCLEAR ENGINEERING; POLARIZATION; PRESSURE VESSELS; TESTING

Citation Formats

Rebak, R B, Day, S D, Lian, T, Aprigliano, L F, Hailey, P D, and Farmer, J C. Enhanced Corrosion Resistance of Iron-Based Amorphous Alloys. United States: N. p., 2007. Web. doi:10.1115/PVP2007-26166.
Rebak, R B, Day, S D, Lian, T, Aprigliano, L F, Hailey, P D, & Farmer, J C. Enhanced Corrosion Resistance of Iron-Based Amorphous Alloys. United States. doi:10.1115/PVP2007-26166.
Rebak, R B, Day, S D, Lian, T, Aprigliano, L F, Hailey, P D, and Farmer, J C. Sun . "Enhanced Corrosion Resistance of Iron-Based Amorphous Alloys". United States. doi:10.1115/PVP2007-26166. https://www.osti.gov/servlets/purl/913546.
@article{osti_913546,
title = {Enhanced Corrosion Resistance of Iron-Based Amorphous Alloys},
author = {Rebak, R B and Day, S D and Lian, T and Aprigliano, L F and Hailey, P D and Farmer, J C},
abstractNote = {Iron-based amorphous alloys possess enhanced hardness and are highly resistant to corrosion, which make them desirable for wear applications in corrosive environments. It was of interest to examine the behavior of amorphous alloys during anodic polarization in concentrated salt solutions and in the salt-fog testing. Results from the testing of one amorphous material (SAM2X5) both in ribbon form and as an applied coating are reported here. Cyclic polarization tests were performed on SAM2X5 ribbon as well as on other nuclear engineering materials. SAM2X5 showed the highest resistance to localized corrosion in 5 M CaCl{sub 2} solution at 105 C. Salt fog tests of 316L SS and Alloy 22 coupons coated with amorphous SAM2X5 powder showed resistance to rusting. Partial devitrification may be responsible for isolated pinpoint rust spots in some coatings.},
doi = {10.1115/PVP2007-26166},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 18 00:00:00 EST 2007},
month = {Sun Feb 18 00:00:00 EST 2007}
}

Conference:
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