Abstract: A method of applying a cerium diffusion coating to a preferred nickel base alloy substrate has been discovered. A cerium oxide paste containing a halide activator is applied to the polished substrate and then dried. The workpiece is heated in a non-oxidizing atmosphere to diffuse cerium into the substrate. After cooling, any remaining cerium oxide is removed. The resulting cerium diffusion coating on the nickel base substrate demonstrates improved resistance to oxidation. Cerium coated alloys are particularly useful as components in a solid oxide fuel cell (SOFC).
Type:
Grant
Filed:
September 15, 2005
Date of Patent:
June 30, 2009
Assignee:
The United States of America as represented by the United States Department of Energy
Abstract: A method, system, and apparatus for conducting real-time monitoring of flow (airflow for example) in a system (a hybrid power generation system for example) is disclosed. The method, system and apparatus measure at least flow direction and velocity with minimal pressure drop and fast response. The apparatus comprises an ion source and a multi-directional collection device proximate the ion source. The ion source is configured to generate charged species (electrons and ions for example). The multi-directional collection source is configured to determine the direction and velocity of the flow in real-time.
Type:
Grant
Filed:
May 23, 2007
Date of Patent:
April 28, 2009
Assignee:
The United States of America as represented by the United States Department of Energy
Inventors:
Benjamin T. Chorpening, Kent H. Casleton
Abstract: The invention presents a device for the removal of elemental mercury from flue gas streams utilizing a layer of activated carbon particles contained within the filter fabric of a filter bag for use in a flue gas scrubbing system.
Type:
Grant
Filed:
July 12, 2006
Date of Patent:
February 24, 2009
Assignee:
The United State of America as represented by the United States Department of Energy