Research is active on the patented technology titled, "Method of Producing an Oxide Dispersion Strengthened Coating and Micro-Channels." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy’s National Energy Technology Laboratory.
A critical element in the implementation of high-efficiency, near-zero emission turbine power systems is the advancement of thermal protection elements. Oxide dispersion strengthened (ODS) alloys are exceedingly promising for applications in extreme environments due to their excellent high-temperature creep strength and good oxidation resistance. But while ODS alloys are being evaluated for high temperature applications, such as heat exchanger tubing, boilers, and turbine blades, a key factor that limits widespread usage is the high manufacturing cost.
This invention describes a method for the production of ODS composite coating materials using a mechano-chemical bonding process followed by high energy ball milling. The metal powders produced have extremely fine and uniform microstructures providing a uniformly dispersed coating material. A crucial feature of this invention is the significant reduction in fabrication time, particularly as it relates to ODS composite particles. Additionally, the fabrication process provides a mixed composite material that can be applied by cold spraying followed by heat treatment, reducing the processing steps typically used between composite particle production and final fabrication.
ODS alloy coatings produced by this method are expected to have enhanced thermal, oxidative, and mechanical protection at a lower fabrication cost. Ongoing research is focused on optimizing ODS composition and application techniques.
Produces a stable protective oxide layer that can be applied by cold spraying
Resulting alloys have improved temperature, oxidative, and mechanical resistant
Reduces overall fabrication processing time and cost
Extends functional lifespan of turbine componentry
Power generation turbine blades, heat exchanger tubing, and boilers
Other applications where heat- and oxidative-resistant components are required
U.S. Patent No: 8,609,187
Title: Method of Producing an Oxide Dispersion Strengthened Coating and Microchannels
Inventors: Bruce Kang, Minking Chyu, Mary Anne Alvin, Brian Gleeson
NETL Reference No: 10N-13
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