Passivation and alloying element retention in gas atomized powders

Heidloff, Andrew J.; Rieken, Joel R.; Anderson, Iver E.

Title: Passivation and alloying element retention in gas atomized powders

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.

Inventors:: Heidloff, Andrew J.; Rieken, Joel R.; Anderson, Iver E.

Issue Date:: 2020-05-26

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1650933

Patent Number(s):: 10661339

Application Number:: 15/732,398

Assignee:: Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

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B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F1/02 - comprising coating of the powder {
B22F2003/1051 - {by electric discharge}
B22F2003/208 - {Warm or hot extruding}
B22F2009/0844 - {in controlled atmosphere}
B22F2201/00 - Treatment under specific atmosphere
B22F2201/03 - Oxygen
B22F2998/10 - Processes characterised by the sequence of their steps
B22F2999/00 - Aspects linked to processes or compositions used in powder metallurgy
B22F3/14 - simultaneously
B22F3/15 - Hot isostatic pressing
B22F3/225 - {by injection molding}
B22F9/082 - {atomising using a fluid

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P10/25 - by increasing the energy efficiency of the process

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T428/2991 - Coated

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DOE Contract Number:: AC02-07CH11358

Resource Type:: Patent

Resource Relation:: Patent File Date: 11/06/2017

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE

Citation Formats


                    Heidloff, Andrew J., Rieken, Joel R., and Anderson, Iver E. Passivation and alloying element retention in gas atomized powders.  United States: N. p., 2020. 
        Web.

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                    Heidloff, Andrew J., Rieken, Joel R., & Anderson, Iver E. Passivation and alloying element retention in gas atomized powders.  United States.

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                    Heidloff, Andrew J., Rieken, Joel R., and Anderson, Iver E. Tue .  
        "Passivation and alloying element retention in gas atomized powders".  United States.  https://www.osti.gov/servlets/purl/1650933.

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@article{osti_1650933,

  title        = {Passivation and alloying element retention in gas atomized powders},

  author       = {Heidloff, Andrew J. and Rieken, Joel R. and Anderson, Iver E.},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {5}

}

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Title: Passivation and alloying element retention in gas atomized powders

Abstract

Citation Formats

Thermal sprayed composite melt containment tubular component and method of making same patent, March 2002

Method of making environmentally stable reactive alloy powders patent, December 1994

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Atomizing nozzle and process patent, June 1992

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One-piece, composite crucible with integral withdrawal/discharge section patent, July 2002

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Stability of gas atomized reactive powders through multiple step in-situ passivation patent-application, November 2013

Thermal sprayed composite melt containment tubular component and method of making same
patent, March 2002

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patent, November 1994

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patent, June 1992

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