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A High-Performance Corrosion-Resistant Iron-Based Amorphous Metal - The Effects of Composition, Structure and Environment on Corrosion Resistance

Published online by Cambridge University Press:  19 October 2011

Joseph Collin Farmer ,
J. Haslam ,
D. Day ,
T. Lian ,
C. Saw ,
P. Hailey ,
J-S. Choi ,
R. Rebak ,
N. Yang  and
R. Bayles
...Show all authors
Joseph Collin Farmer
Affiliation:
farmer4@llnl.gov, Lawrence Livermore National Laboratory, Nuclear Science & Systems Engineering Program, 7000 East Avenue, Livermore, CA, 94550, United States, 925-423-6574
J. Haslam
Affiliation:
haslam2@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
D. Day
Affiliation:
day24@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
T. Lian
Affiliation:
lian1@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
C. Saw
Affiliation:
saw1@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
P. Hailey
Affiliation:
hailey4@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
J-S. Choi
Affiliation:
choi1@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
R. Rebak
Affiliation:
rebak1@llnl.gov, Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States
N. Yang
Affiliation:
nyyang@sandia.gov, Sandia National Laboratory, Livermore, CA, 94550, United States
R. Bayles
Affiliation:
bayles@nrl.navy.mil, Naval Research Laboratory, Washington, DC, 20375, United States
L. Aprigliano
Affiliation:
l.aprigliano@mchs.com, Consultant, Berlin, MD, 21811, United States
J. Payer
Affiliation:
jhp@po.cwru.edu, Case Western Reserve University, Cleveland, OH, 44106, United States
J. Perepezko
Affiliation:
perpezk@engr.wisc.edu, University of Wisconsin, Madison, WI, 53706, United States
K. Hildal
Affiliation:
hildal@wisc.edu, University of Wisconsin, Madison, WI, 53706, United States
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Abstract

The passive film stability of several Fe-based amorphous metal formulations have been found to be comparable to that of high-performance Ni-based alloys, and superior to that of stainless steels, based on electrochemical measurements of the passive film breakdown potential and general corrosion rates. Chromium (Cr), molybdenum (Mo) and tungsten (W) provide corrosion resistance; boron (B) enables glass formation; and rare earths such as yttrium (Y) lower critical cooling rate (CCR). The high boron content of this particular amorphous metal also makes it an effective neutron absorber, and suitable for criticality control applications, as discussed in companion publications. Corrosion data for SAM2X5 (Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4) is discussed here.

Keywords

amorphousalloycorrosion
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 985: Symposium NN – Scientific Basis for Nuclear Waste Management XXX , 2006 , 0985-NN08-03
Copyright
Copyright © Materials Research Society 2007

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References

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