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Title: Development and Characterization of 3D Printable Thermite Component Materials

Abstract

Additive manufacturing (AM) has recently shown great promise as a means to tailor a wide range of material properties, both quasi-static and dynamic. An example of controlling the dynamic behavior is to tailor the chemical energy release rate in composite energetic materials such as thermites – which are a subset of pyrotechnics that use a metal fuel and a metal oxide as an oxidizer. Since these materials are most hazardous once finely mixed, the approach taken here is to formulate the fuel and oxidizer separately such that they can be mixed on-the-fly. The development, formulation, and characterization of two respective aqueous 3D printable inks consisting of Al and CuO are discussed. The rheological properties and ability of the material to span gaps are characterized. To demonstrate that the materials could be mixed and sustain a reaction, the inks are fed into a static mixing nozzle and extruded into a high-aspect ratio test strip. Upon drying, the material can be ignited and sustain a propagation through the part. These results present a facile, and safe, way to AM thermite which can be used for more detailed follow on studies looking at the role of architecture on the reactivity.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1497290
Alternate Identifier(s):
OSTI ID: 1479550
Report Number(s):
LLNL-JRNL-748707
Journal ID: ISSN 2365-709X; 933581
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials Technologies
Additional Journal Information:
Journal Volume: 3; Journal Issue: 12; Journal ID: ISSN 2365-709X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 3D printing; additive manufacturing; reactive materials; thermite

Citation Formats

Durban, Matthew M., Golobic, Alexandra M., Grapes, Michael D., Bukovsky, Eric V., Gash, Alexander E., and Sullivan, Kyle T. Development and Characterization of 3D Printable Thermite Component Materials. United States: N. p., 2018. Web. doi:10.1002/admt.201800120.
Durban, Matthew M., Golobic, Alexandra M., Grapes, Michael D., Bukovsky, Eric V., Gash, Alexander E., & Sullivan, Kyle T. Development and Characterization of 3D Printable Thermite Component Materials. United States. https://doi.org/10.1002/admt.201800120
Durban, Matthew M., Golobic, Alexandra M., Grapes, Michael D., Bukovsky, Eric V., Gash, Alexander E., and Sullivan, Kyle T. Fri . "Development and Characterization of 3D Printable Thermite Component Materials". United States. https://doi.org/10.1002/admt.201800120. https://www.osti.gov/servlets/purl/1497290.
@article{osti_1497290,
title = {Development and Characterization of 3D Printable Thermite Component Materials},
author = {Durban, Matthew M. and Golobic, Alexandra M. and Grapes, Michael D. and Bukovsky, Eric V. and Gash, Alexander E. and Sullivan, Kyle T.},
abstractNote = {Additive manufacturing (AM) has recently shown great promise as a means to tailor a wide range of material properties, both quasi-static and dynamic. An example of controlling the dynamic behavior is to tailor the chemical energy release rate in composite energetic materials such as thermites – which are a subset of pyrotechnics that use a metal fuel and a metal oxide as an oxidizer. Since these materials are most hazardous once finely mixed, the approach taken here is to formulate the fuel and oxidizer separately such that they can be mixed on-the-fly. The development, formulation, and characterization of two respective aqueous 3D printable inks consisting of Al and CuO are discussed. The rheological properties and ability of the material to span gaps are characterized. To demonstrate that the materials could be mixed and sustain a reaction, the inks are fed into a static mixing nozzle and extruded into a high-aspect ratio test strip. Upon drying, the material can be ignited and sustain a propagation through the part. These results present a facile, and safe, way to AM thermite which can be used for more detailed follow on studies looking at the role of architecture on the reactivity.},
doi = {10.1002/admt.201800120},
journal = {Advanced Materials Technologies},
number = 12,
volume = 3,
place = {United States},
year = {Fri Oct 26 00:00:00 EDT 2018},
month = {Fri Oct 26 00:00:00 EDT 2018}
}

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Free Publicly Available Full Text
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Cited by: 20 works
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Figures / Tables:

Figure 1 Figure 1: The custom Aerotech 3D printer showing (a) an overview of the gantry and movement stage and (b) a more detailed view of the extrusion assembly, printing stage, and c) the nozzle where material is extruded through.

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Works referencing / citing this record:

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