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High Performance Corrosion-Resistant Materials

  1. Joseph C. Farmer1,2

Published Online: 20 JUL 2012

DOI: 10.1002/9781118097298.weoc106

Wiley Encyclopedia of Composites

Wiley Encyclopedia of Composites

How to Cite

Farmer, J. C. 2012. High Performance Corrosion-Resistant Materials. Wiley Encyclopedia of Composites. 1–32.

Author Information

  1. 1

    Lawrence Livermore National Laboratory, Livermore, CA

  2. 2

    United States Naval Postgraduate School, Monterey, CA

Publication History

  1. Published Online: 20 JUL 2012

Abstract

The outstanding corrosion that may be possible with amorphous metal alloys was recognized several years ago. Compositions of several iron-based amorphous metals were published, including several with very good corrosion resistance. Examples include thermally sprayed coatings of Fe-10Cr-10-Mo-(C,B), bulk Fe-Cr-Mo-C-B, and Fe-Cr-Mo-C-B-P. The corrosion resistance of an iron-based amorphous alloy with yttrium (Y), Fe48Mo14Cr15Y2C15B6, was also been established. Yttrium was added to this alloy to lower the critical cooling rate. Several nickel-based amorphous metals have been developed that exhibit exceptional corrosion performance in acids but have not been included in this study, which is restricted to Fe-based materials. Very good thermal spray coatings of nickel-based crystalline coatings were deposited with thermal spray but appear to have less corrosion resistance than nickel-based amorphous metals. Two iron-based amorphous metal alloys presented here as examples are SAM2X5 (Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8Si2.4) and SAM1651 (Fe48Mo14Cr15Y2C15B6). These materials have been developed in the form of thin coatings, as well as thick layers forming composite surfaces, to provide exceptional corrosion resistance in environments including, but not limited to, 5M CaCl2 at 105–120°C and natural seawater at 30–90°C.

Keywords:

  • metallic glass;
  • amorphous metal;
  • metallic glass coating;
  • amorphous metal coating;
  • SAM2X5;
  • SAM1651;
  • thermal spray coating;
  • HVOF coating;
  • corrosion;
  • corrosion resistance