Actions for Novel Nanocrystalline Intermetallic Coatings for Metal Alloys in Coal-fired Environments [electronic resource].

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Novel Nanocrystalline Intermetallic Coatings for Metal Alloys in Coal-fired Environments [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2009.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
University of Utah, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Intermetallic coatings (iron aluminide and nickel aluminide) were prepared by a novel reaction process. In the process, the aluminide coating is formed by an in-situ reaction between the aluminum powder fed through a plasma transferred arc (PTA) torch and the metal substrate (steel or Ni-base alloy). Subjected to the high temperature within an argon plasma zone, aluminum powder and the surface of the substrate melt and react to form the aluminide coatings. The prepared coatings were found to be aluminide phases that are porosity-free and metallurgically bonded to the substrate. The coatings also exhibit excellent high-temperature corrosion resistance under the conditions which simulate the steam-side and fire-side environments in coal-fired boilers. It is expected that the principle demonstrated in this process can be applied to the preparation of other intermetallic and alloy coatings.
Report Numbers
E 1.99:978339
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
08/31/2009.
H. Y. Sohn; Z. Zak Fang.
Type of Report and Period Covered Note
Final;
Funding Information
FG26-05NT42529
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