Stability of gas atomized reactive powders through multiple step in-situ passivation

Anderson, Iver E.; Steinmetz, Andrew D.; Byrd, David J.

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Title: Stability of gas atomized reactive powders through multiple step in-situ passivation

Abstract

A method for gas atomization of oxygen-reactive reactive metals and alloys 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 protective reaction film on the atomized particles. The present invention is especially useful for making highly pyrophoric reactive metal or alloy atomized powders, such as atomized magnesium and magnesium alloy powders. The gaseous reactive species (agents) are introduced into the atomization spray chamber at locations downstream of a gas atomizing nozzle as determined by the desired powder or particle temperature for the reactions and the desired thickness of the reaction film.

Inventors:: Anderson, Iver E.; Steinmetz, Andrew D.; Byrd, David J.

Issue Date:: 2017-05-16

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1357554

Patent Number(s):: 9650309

Application Number:: 13/986,193

Assignee:: Iowa State University Research Foundation, Inc.

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

C - CHEMISTRY C06 - EXPLOSIVES C06B - EXPLOSIVES OR THERMIC COMPOSITIONS

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B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F2009/0844 - {in controlled atmosphere}
B22F2201/00 - Treatment under specific atmosphere
B22F2201/03 - Oxygen
B22F2201/10 - Inert gases
B22F2999/00 - Aspects linked to processes or compositions used in powder metallurgy
B22F9/082 - {atomising using a fluid
B22F9/16 - using chemical processes

C - CHEMISTRY C06 - EXPLOSIVES C06B - EXPLOSIVES OR THERMIC COMPOSITIONS
C06B45/30 - the component base containing an inorganic explosive or an inorganic thermic component

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DOE Contract Number:: AC02-07CH11358

Resource Type:: Patent

Resource Relation:: Patent File Date: 2013 Apr 10

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Anderson, Iver E., Steinmetz, Andrew D., and Byrd, David J. Stability of gas atomized reactive powders through multiple step in-situ passivation.  United States: N. p., 2017. 
        Web.

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                    Anderson, Iver E., Steinmetz, Andrew D., & Byrd, David J. Stability of gas atomized reactive powders through multiple step in-situ passivation.  United States.

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                    Anderson, Iver E., Steinmetz, Andrew D., and Byrd, David J. Tue .  
        "Stability of gas atomized reactive powders through multiple step in-situ passivation".  United States.  https://www.osti.gov/servlets/purl/1357554.

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@article{osti_1357554,

  title        = {Stability of gas atomized reactive powders through multiple step in-situ passivation},

  author       = {Anderson, Iver E. and Steinmetz, Andrew D. and Byrd, David J.},

  abstractNote = {A method for gas atomization of oxygen-reactive reactive metals and alloys 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 protective reaction film on the atomized particles. The present invention is especially useful for making highly pyrophoric reactive metal or alloy atomized powders, such as atomized magnesium and magnesium alloy powders. The gaseous reactive species (agents) are introduced into the atomization spray chamber at locations downstream of a gas atomizing nozzle as determined by the desired powder or particle temperature for the reactions and the desired thickness of the reaction film.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {5}

}

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Works referenced in this record:

Method for Inhibiting the Oxidation of Readily Oxidizable Metals
patent, September 1934

Reimers, Hans A.
US Patent Document 1,972,317
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/1972317

Electric arc spraying of reactive metals
patent, February 1991

Kaiser, John J.; Hayduk, Jr., Edward A.; Zurecki, Zbigniew
US Patent Document 4,992,337
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4992337

Atomizing nozzle and process
patent, June 1992

Anderson, Iver E.; Figliola, Richard S.; Molnar, Holly M.
US Patent Document 5,125,574
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5125574

Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions
patent, November 1994

Anderson, Iver E.; Lograsso, Barbara K.; Ellis, Timothy W.
US Patent Document 5,368,657
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5368657

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

Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
US Patent Document 5,372,629
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5372629

Apparatus for making environmentally stable reactive alloy powders
patent, December 1996

Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
US Patent Document 5,589,199
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5589199

Environmentally stable reactive alloy powders and method of making same
patent, September 1998

Anderson, Iver E.; Lograsso, Barbara K.; Terpstra, Robert L.
US Patent Document 5,811,187
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5811187

Atomizing apparatus for making polymer and metal powders and whiskers
patent, March 2003

Otaigbe, Joshua U.; McAvoy, Jon M.; Anderson, Iver E.
US Patent Document 6,533,563
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6533563

Surface-Modified Magnesium Powders For Use In Pyrotechnic Compositions
patent-application, January 2009

Smith, Paul
US Patent Application 12/167845; 20090025841
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090025841

Characterisation of protective surface films formed on molten magnesium protected by air/SF₆ atmospheres
journal, February 2002

Cashion, S. P.; Ricketts, N. J.; Hayes, P. C.
Journal of Light Metals, Vol. 2, Issue 1, p. 37-42
https://doi.org/10.1016/S1471-5317(02)00011-1

Characterisation of the surface films formed on molten magnesium in different protective atmospheres
journal, July 2002

Pettersen, Gunnar; Øvrelid, E.; Tranell, G.
Materials Science and Engineering: A, Vol. 332, Issue 1-2, p. 285-294
https://doi.org/10.1016/S0921-5093(01)01750-6

Behaviour of CaO coating of gas atomized Mg powders using mechanical milling process
journal, June 2011

Kim, Sun-Mi; Kim, Yong Hwan; Kim, Young Do
Journal of Alloys and Compounds, Vol. 509, p. S503-S506
https://doi.org/10.1016/j.jallcom.2011.02.078

The Oxidation and Evaporation of Magnesium at Temperatures from 400° to 500° C
journal, January 1945

Gulbransen, Earl A.
Transactions of The Electrochemical Society, Vol. 87, Issue 1, p. 589-599
https://doi.org/10.1149/1.3071667

The mechanism of protection of molten magnesium by cover gas mixtures containing sulphur hexafluoride
journal, February 2002

Cashion, S. P.; Ricketts, N. J.; Hayes, P. C.
Journal of Light Metals, Vol. 2, Issue 1, p. 43-47
https://doi.org/10.1016/S1471-5317(02)00012-3

Protection behavior of fluorine-containing cover gases on molten magnesium alloys
journal, July 2010

Xiong, Shou-mei; Wang, Xian-fei
Transactions of Nonferrous Metals Society of China, Vol. 20, Issue 7, p. 1228-1234
https://doi.org/10.1016/S1003-6326(09)60283-1

Highly tuned gas atomization for controlled preparation of coarse powder. Hochleistungsgasverdüsung für die gezielte Präparation grober Pulver
journal, July 2010

Anderson, I. E.; Byrd, D.; Meyer, J.
Materialwissenschaft und Werkstofftechnik, Vol. 41, Issue 7, p. 504-512
https://doi.org/10.1002/mawe.201000636

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Stability of gas atomized reactive powders through multiple step in-situ passivation

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Similar Records

Title: Stability of gas atomized reactive powders through multiple step in-situ passivation

Abstract

Citation Formats

Method for Inhibiting the Oxidation of Readily Oxidizable Metals patent, September 1934

Electric arc spraying of reactive metals patent, February 1991

Atomizing nozzle and process patent, June 1992

Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions patent, November 1994

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

Apparatus for making environmentally stable reactive alloy powders patent, December 1996

Environmentally stable reactive alloy powders and method of making same patent, September 1998

Atomizing apparatus for making polymer and metal powders and whiskers patent, March 2003

Surface-Modified Magnesium Powders For Use In Pyrotechnic Compositions patent-application, January 2009

Characterisation of protective surface films formed on molten magnesium protected by air/SF6 atmospheres journal, February 2002

Characterisation of the surface films formed on molten magnesium in different protective atmospheres journal, July 2002

Behaviour of CaO coating of gas atomized Mg powders using mechanical milling process journal, June 2011

The Oxidation and Evaporation of Magnesium at Temperatures from 400° to 500° C journal, January 1945

The mechanism of protection of molten magnesium by cover gas mixtures containing sulphur hexafluoride journal, February 2002

Protection behavior of fluorine-containing cover gases on molten magnesium alloys journal, July 2010

Highly tuned gas atomization for controlled preparation of coarse powder. Hochleistungsgasverdüsung für die gezielte Präparation grober Pulver journal, July 2010

Method for Inhibiting the Oxidation of Readily Oxidizable Metals
patent, September 1934

Electric arc spraying of reactive metals
patent, February 1991

Atomizing nozzle and process
patent, June 1992

Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions
patent, November 1994

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

Apparatus for making environmentally stable reactive alloy powders
patent, December 1996

Environmentally stable reactive alloy powders and method of making same
patent, September 1998

Atomizing apparatus for making polymer and metal powders and whiskers
patent, March 2003

Surface-Modified Magnesium Powders For Use In Pyrotechnic Compositions
patent-application, January 2009

Characterisation of protective surface films formed on molten magnesium protected by air/SF₆ atmospheres
journal, February 2002

Characterisation of the surface films formed on molten magnesium in different protective atmospheres
journal, July 2002

Behaviour of CaO coating of gas atomized Mg powders using mechanical milling process
journal, June 2011

The Oxidation and Evaporation of Magnesium at Temperatures from 400° to 500° C
journal, January 1945

The mechanism of protection of molten magnesium by cover gas mixtures containing sulphur hexafluoride
journal, February 2002

Protection behavior of fluorine-containing cover gases on molten magnesium alloys
journal, July 2010

Highly tuned gas atomization for controlled preparation of coarse powder. Hochleistungsgasverdüsung für die gezielte Präparation grober Pulver
journal, July 2010