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Method of producing an oxide dispersion strengthened coating and micro-channels

United States Patent

December 17, 2013
View the Complete Patent at the US Patent & Trademark Office
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The disclosure provides a method for the production of composite particles utilizing a mechano chemical bonding process following by high energy ball milling on a powder mixture comprised of coating particles, first host particles, and second host particles. The composite particles formed have a grain size of less than one micron with grains generally characterized by a uniformly dispersed coating material and a mix of first material and second material intermetallics. The method disclosed is particularly useful for the fabrication of oxide dispersion strengthened coatings, for example using a powder mixture comprised of Y.sub.2O.sub.3, Cr, Ni, and Al. This particular powder mixture may be subjected to the MCB process for a period generally less than one hour following by high energy ball milling for a period as short as 2 hours. After application by cold spraying, the composite particles may be heat treated to generate an oxide-dispersion strengthened coating.
Kang; Bruce S. (Morgantown, WV), Chyu; Minking K. (Pittsburgh, PA), Alvin; Mary Anne (Pittsburgh, PA), Gleeson; Brian M. (Sewickley, PA)
U.S. Department of Energy (Washington, DC)
13/ 337,589
December 27, 2011
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to the employer-employee relationship of the Government to the inventors as U.S. Department of Energy employees at the National Energy Technology Laboratory, and pursuant to contract DE-AC26-04NT41817.