Passivation and alloying element retention in gas atomized powders
AssigneeIowa State University Research Foundation, Inc.
InventorsAndrew J. Heidloff, Joel R. Rieken, Iver E. Anderson
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Abstract
A method for gas atomization of a titanium alloy, nickel alloy, or other alumina (Al2O3)— forming alloy wherein the atomized particles are exposed as they solidify and cool in a very short time to multiple gaseous reactive agents for the in-situ formation of a passivation reaction film on the atomized particles wherein the reaction film retains a precursor halogen alloying element that is subsequently introduced into a microstructure formed by subsequent thermally processing of the atomized particles to improve oxidation resistance.
Claims9
-22. (canceled)
A body made from titanium-aluminum alloy particles that include a halogen element wherein the body has a microstructure having the halogen element present in the microstructure in an amount to improve oxidation resistance.
A body made from nickel-aluminum alloy particles that include a halogen element wherein the body has a microstructure having the halogen element present in the microstructure in an amount to improve oxidation resistance.
Dependencies are inferred from the claim text.