Method for creating porous structures by particle expansion
AssigneesMillersville University of Pennsylvania, The United States of America as represented by the Secretary of the Army
InventorsMark Andrew Atwater, Kris Allen Darling, Mark Allen Tschopp, Jr.
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Abstract
A process for producing a metal foam includes mechanically working a metallic powder such that oxide particles are finely dispersed within a metallic matrix and annealing the mechanically worked metallic powder in a vacuum the annealed metallic powder such that intraparticle porosity is formed by decomposition of the oxide particles at elevated temperature to reduce the oxide particles to metallic form and liberate the oxygen atoms in gaseous form, thereby creating porosity.
Claims8
A process for producing a metal foam comprising:
- mechanically working a metallic powder such that oxide particles and/or dissolved oxygen are finely dispersed within a metallic matrix;
- annealing the mechanically worked metallic powder in a vacuum;
- and
- forming the metal foam of the annealed metallic powder having intraparticle porosity formed by decomposition of the oxide particles at an elevated temperature to reduce the oxide particles to metallic form and liberate the oxygen atoms in gaseous form, thereby creating porosity.
Dependencies are inferred from the claim text.