Researchers from New Jersey Institute of Technology Report New Studies and Findings in the Area of Propulsion and Power (Ignition of Fully Dense Nanocomposite Thermite Powders by an Electric Spark)
By a News Reporter-Staff News Editor at Defense & Aerospace Week -- Fresh data on Propulsion and Power are presented in a new report. According to news originating from Newark, New Jersey, by VerticalNews correspondents, research stated, "Electrostatic discharge ignition of nanocomposite thermites prepared by Arrested Reactive Milling was investigated. The powders 2Al-3CuO and 8Al-MoO3 were placed in a sample holder and subjected to an electrostatic discharge from a discharging capacitor."
Our news journalists obtained a quote from the research from the New Jersey Institute of Technology, "Their optical emission was monitored. Two ignition modes were detected: immediate ignition of individual particles and delayed ignition of a cloud of aerosolized powder. Experiments addressed the effects of material composition and morphology, aging, energy input, layer thickness, and environment on the ignition mode and ignition delays. Prepared thermites were blended with pure metal powders to study ignition of such blends. Individual particle ignition was observed for samples prepared as monolayers in air and argon and for any samples in vacuum. For thicker samples in air and in argon, a delayed powder ignition mode was observed. The delays varied from 10 mu s to several milliseconds. Powders of 2Al-3CuO had shorter ignition delays compared with 8Al-MoO3. For both materials, delays decreased for the powders prepared using longer milling times. For 2Al-3CuO, aged powders ignited after longer delays compared with the freshly prepared powders; however, shorter delays were observed for the aged 8Al-MoO3. Electrostatic discharge energy and layer thickness (except for a monolayer) did not affect the ignition delay."
According to the news editors, the research concluded: "Blending nanocomposite thermites with Al and Ti powders reduced their electrostatic discharge ignition sensitivity and caused longer ignition delays."
For more information on this research see: Ignition of Fully Dense Nanocomposite Thermite Powders by an Electric Spark. Journal of Propulsion and Power, 2014;30(3):765-774. Journal of Propulsion and Power can be contacted at: Amer Inst Aeronautics Astronautics, 1801 Alexander Bell Drive, Ste 500, Reston, VA 22091-4344, USA.
The news correspondents report that additional information may be obtained from R.A. Williams, New Jersey Inst Technol, Dept. of Chem Engn, Newark, NJ 07102, United States. Additional authors for this research include J.V. Patel and E.L. Dreizin.
Keywords for this news article include: Newark, New Jersey, United States, Propulsion and Power, North and Central America
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