TY - GEN
T1 - Synthesis of aluminum-rich nanocomposite powders at cryogenic temperatures
AU - Badiola, Carlo
AU - Schoenitz, Mirko
AU - Dreizin, Edward L.
PY - 2008
Y1 - 2008
N2 - Nanocomposite materials of reactive components are of interest for many applications in pyrotechnics, explosives, and propellants. Several such materials have been recently prepared by Arrested Reactive Milling (ARM), a method based on mechanical milling of μm-sized component powders to form μm-sized composite particles in which the components are mixed on a scale of 100 nm or finer. The temperature at which the milling is performed affects significantly both the rate at which the material is refined and the final properties of the product. In the present paper we report on an effort to process Al-CuO and Al-MoO3 reactive nanocomposite at cryogenic temperatures. A SPEX Certiprep 6815 Freezer/Mill was used to prepare the nanocomposites with aluminum-rich compositions from μm-sized component powders. The material was processed in steel vials using steel balls of different sizes as milling medium. The number and dimensions of the milling balls as well as the milling time were systematically varied. The prepared powders were characterized by X-ray diffraction, particle size analysis, and scanning electron microscopy. Preliminary results show that the uniformity of mixing and reactivity of the nanocomposite powders can be substantially improved using milling at cryogenic temperatures.
AB - Nanocomposite materials of reactive components are of interest for many applications in pyrotechnics, explosives, and propellants. Several such materials have been recently prepared by Arrested Reactive Milling (ARM), a method based on mechanical milling of μm-sized component powders to form μm-sized composite particles in which the components are mixed on a scale of 100 nm or finer. The temperature at which the milling is performed affects significantly both the rate at which the material is refined and the final properties of the product. In the present paper we report on an effort to process Al-CuO and Al-MoO3 reactive nanocomposite at cryogenic temperatures. A SPEX Certiprep 6815 Freezer/Mill was used to prepare the nanocomposites with aluminum-rich compositions from μm-sized component powders. The material was processed in steel vials using steel balls of different sizes as milling medium. The number and dimensions of the milling balls as well as the milling time were systematically varied. The prepared powders were characterized by X-ray diffraction, particle size analysis, and scanning electron microscopy. Preliminary results show that the uniformity of mixing and reactivity of the nanocomposite powders can be substantially improved using milling at cryogenic temperatures.
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M3 - Conference contribution
AN - SCOPUS:77957833993
SN - 9781563479434
T3 - 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
BT - 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
T2 - 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Y2 - 21 July 2008 through 23 July 2008
ER -