Development and Characterization of 3D Printable Thermite Component Materials
Journal Article
·
· Advanced Materials Technologies
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1497290
- Alternate ID(s):
- OSTI ID: 1479550
- Report Number(s):
- LLNL-JRNL--748707; 933581
- Journal Information:
- Advanced Materials Technologies, Journal Name: Advanced Materials Technologies Journal Issue: 12 Vol. 3; ISSN 2365-709X
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Active Mixing of Reactive Materials for 3D Printing
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journal | May 2019 |
3D Printing of Micro‐Architected Al/CuO‐Based Nanothermite for Enhanced Combustion Performance
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journal | October 2019 |
Designer Direct Ink Write 3D‐Printed Thermites with Tunable Energy Release Rates
|
journal | December 2019 |
Designer Direct Ink Write 3D‐Printed Thermites with Tunable Energy Release Rates
|
journal | June 2020 |
Additive manufacturing and combustion performance of CL-20 composites
|
journal | November 2019 |
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