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Salt Fog Testing Iron-Based Amorphous Alloys

Published online by Cambridge University Press:  19 October 2011

Raul B. Rebak ,
Louis F. Aprigliano ,
S. Daniel Day  and
Joseph C. Farmer
Raul B. Rebak
Affiliation:
rebak1@llnl.gov, Lawrence Livermore National Laboratory, Chemistry and Materials Science, 7000 East Ave, L-631, Livermore, CA, 94550, United States, 925-422-1854, 925-422-2105
Louis F. Aprigliano
Affiliation:
l.aprigliano@mchsi.com, Consultant, Berlin, MD, 21811, United States
S. Daniel Day
Affiliation:
day24@llnl.gov, LLNL, Livermore, CA, 94550, United States
Joseph C. Farmer
Affiliation:
farmer4@llnl.gov, LLNL, Livermore, CA, 94550, United States
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Abstract

Iron-based amorphous alloys are hard and highly corrosion resistant, which make them desirable for salt water and other applications. These alloys can be produced as powder and can be deposited as coatings on any surface that needs to be protected from the environment. It was of interest to examine the behavior of these amorphous alloys in the standard salt-fog testing ASTM B 117. Three different amorphous coating compositions were deposited on 316L SS coupons and exposed for many cycles of the salt fog test. Other common engineering alloys such as 1018 carbon steel, 316L SS and Hastelloy C-22 were also tested together with the amorphous coatings. Results show that amorphous coatings are resistant to rusting in salt fog. Partial devitrification may be responsible for isolated rust spots in one of the coatings.

Keywords

Feamorphouscorrosion
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 985: Symposium NN – Scientific Basis for Nuclear Waste Management XXX , 2006 , 0985-NN03-14
Copyright
Copyright © Materials Research Society 2007

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