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:
- Issue Date:
- Research Org.:
- Ames Lab., 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
- 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.
Anderson, Iver E., Steinmetz, Andrew D., & Byrd, David J. Stability of gas atomized reactive powders through multiple step in-situ passivation. United States.
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.
@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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