期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 22, 页码 11713-11718出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b02653
关键词
nanothermite; CuO; Al; Cu; Cu enriched multilayers; intermixing; nanoenergetic materials
资金
- French Technological Network RENATECH
- French CNRS [FR3507]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1312525] Funding Source: National Science Foundation
In situ deposition of a thin (similar to 5 nm) layer of copper between Al and CuO layers is shown to increase the overall nanolaminate material reactivity. A combination of transmission electron microscopy imaging, in situ infrared spectroscopy, low energy ion scattering measurements, and first-principles calculations reveals that copper spontaneously diffuses into aluminum layers (substantially less in CuO layers). The formation of an interfacial Al:Cu alloy with melting temperature lower than pure Al metal is responsible for the enhanced reactivity, opening a route to controlling the stochiometry of the aluminum layer and increasing the reactivity of the nanoenergetic multilayer systems in general.
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