USA As Represented by Secretary of the Navy

Mathew Wolford

John D Sethian

Matthew C Myers

Frank Hegeler

Kathryn J Wahl

Ronald L Holtz

Derek Horton

Alexis C Lewis

A method for desensitizing an aluminum alloy is presented. A desired location on the surface of an aluminum alloy sample is exposed to a controlled pulsed electron beam. The pulsed electron beam heats a shallow layer of the metal alloy having a desired depth at the desired location on the surface of the sample to a temperature between a solvus temperature and an annealing temperature of the metal alloy to controllably reduce a degree of sensitization of the metal alloy sample at the desired location, an extent of a reduction in the degree of sensitization being controllable by varying at least one of a voltage, a current density, a pulse duration, a pulse frequency and a number of pulses of the electron beam.

Desensitization of aluminum alloys using pulsed electron beams

A process and apparatus for removing NOfrom exhaust gases produced by combustion-based energy sources. An array of high voltage pulsed electron beams are repetitively generated and transported through a thin foil into the exhaust gas containing NO. The electron beam deposits its energy into the gas and produces reactive radicals N, N, e, Nfrom the NOin the gas. These radicals recombine through chemical reactions to produce benign by-products nitrogen Nand oxygen Owhich are output into the atmosphere.

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Growing community of inventors

Woodbridge, VA, United States of America

Mathew Wolford