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Title: Electrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 90oCElectrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 9

Abstract

An iron-based amorphous metal, Fe{sub 49.7}Cr{sub 17.7}Mn{sub 1.9}Mo{sub 7.4}W{sub 1.6}B{sub 15.2}C{sub 3.8}Si{sub 2.4} (SAM2X5), with very good corrosion resistance was developed. This material was prepared as a melt-spun ribbon, as well as gas atomized powder and a thermal-spray coating. During electrochemical testing in several environments, including seawater at 90 C, the passive film stability was found to be comparable to that of high-performance nickel-based alloys, and superior to that of stainless steels, based on electrochemical measurements of the passive film breakdown potential and general corrosion rates. This material also performed very well in standard salt fog tests. Chromium (Cr), molybdenum (Mo) and tungsten (W) provided corrosion resistance, and boron (B) enabled glass formation. The high boron content of this particular amorphous metal made it an effective neutron absorber, and suitable for criticality control applications. This material and its parent alloy maintained corrosion resistance up to the glass transition temperature, and remained in the amorphous state during exposure to relatively high neutron doses.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1046111
Report Number(s):
UCRL-TR-230335
TRN: US201215%%399
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; AMORPHOUS STATE; BORON; BREAKDOWN; CHROMIUM; CORROSION; CORROSION RESISTANCE; CRITICALITY; FOG; GLASS; MOLYBDENUM; NEUTRON ABSORBERS; NEUTRONS; SEAWATER; STABILITY; STAINLESS STEELS; TESTING; TRANSITION TEMPERATURE; TUNGSTEN

Citation Formats

Farmer, J C, Haslam, J, Day, S D, Lian, T, Saw, C K, Hailey, P D, Choi, J S, Rebak, R B, Yang, N, Payer, J H, Perepezko, J H, Hildal, K, Lavernia, E J, Ajdelsztajn, L, Branagan, D J, Buffa, E J, and Aprigliano, L F. Electrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 90oCElectrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 9. United States: N. p., 2007. Web. doi:10.2172/1046111.
Farmer, J C, Haslam, J, Day, S D, Lian, T, Saw, C K, Hailey, P D, Choi, J S, Rebak, R B, Yang, N, Payer, J H, Perepezko, J H, Hildal, K, Lavernia, E J, Ajdelsztajn, L, Branagan, D J, Buffa, E J, & Aprigliano, L F. Electrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 90oCElectrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 9. United States. doi:10.2172/1046111.
Farmer, J C, Haslam, J, Day, S D, Lian, T, Saw, C K, Hailey, P D, Choi, J S, Rebak, R B, Yang, N, Payer, J H, Perepezko, J H, Hildal, K, Lavernia, E J, Ajdelsztajn, L, Branagan, D J, Buffa, E J, and Aprigliano, L F. Wed . "Electrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 90oCElectrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 9". United States. doi:10.2172/1046111. https://www.osti.gov/servlets/purl/1046111.
@article{osti_1046111,
title = {Electrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 90oCElectrochemical Studies of Passive Film Stability on Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 Amorphous Metal in Seawater at 9},
author = {Farmer, J C and Haslam, J and Day, S D and Lian, T and Saw, C K and Hailey, P D and Choi, J S and Rebak, R B and Yang, N and Payer, J H and Perepezko, J H and Hildal, K and Lavernia, E J and Ajdelsztajn, L and Branagan, D J and Buffa, E J and Aprigliano, L F},
abstractNote = {An iron-based amorphous metal, Fe{sub 49.7}Cr{sub 17.7}Mn{sub 1.9}Mo{sub 7.4}W{sub 1.6}B{sub 15.2}C{sub 3.8}Si{sub 2.4} (SAM2X5), with very good corrosion resistance was developed. This material was prepared as a melt-spun ribbon, as well as gas atomized powder and a thermal-spray coating. During electrochemical testing in several environments, including seawater at 90 C, the passive film stability was found to be comparable to that of high-performance nickel-based alloys, and superior to that of stainless steels, based on electrochemical measurements of the passive film breakdown potential and general corrosion rates. This material also performed very well in standard salt fog tests. Chromium (Cr), molybdenum (Mo) and tungsten (W) provided corrosion resistance, and boron (B) enabled glass formation. The high boron content of this particular amorphous metal made it an effective neutron absorber, and suitable for criticality control applications. This material and its parent alloy maintained corrosion resistance up to the glass transition temperature, and remained in the amorphous state during exposure to relatively high neutron doses.},
doi = {10.2172/1046111},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 25 00:00:00 EDT 2007},
month = {Wed Apr 25 00:00:00 EDT 2007}
}

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