Combustion behaviors of bimodal aluminum size distributions in thermites
dc.contributor.committeeChair | Pantoya, Michelle | |
dc.contributor.committeeMember | Hope-Weeks, Louisa J. | |
dc.contributor.committeeMember | Weeks, Brandon L. | |
dc.creator | Moore, Kevin M. | |
dc.date.accessioned | 2016-11-14T23:14:31Z | |
dc.date.available | 2012-06-01T16:32:24Z | |
dc.date.available | 2016-11-14T23:14:31Z | |
dc.date.issued | 2005-05 | |
dc.description.abstract | In recent years many studies that incorporated nano-scale or ultrafine aluminum (Al) as part of an energetic formulation demonstrated significant performance enhancement. Decreasing the fuel particle size from the micron to nanometer range alters the material¡¦s chemical and thermal-physical properties. The result is increased particle reactivity that translates to an increase in the combustion velocity and ignition sensitivity. Little is known, however, about the critical level of nano-sized fuel particles needed to enhance the performance of the energetic composite. Ignition sensitivity and combustion velocity experiments were performed using a thermite composite of Al and molybdenum trioxide (MoO3) at the theoretical maximum density (TMD) of a loose power (5% TMD) and a compressed pellet (50% TMD). A bimodal Al particle size distribution was prepared using 4 or 20 ƒÝm Al fuel particles that were replaced in 10% increments by 80 nm Al particles until the fuel was 100% 80 nm Al. These bimodal distributions allow the unique characteristics of nano-scale materials and their interactions with micron scale Al particles to be better understood. | |
dc.format.mimetype | application/pdf | |
dc.identifier.uri | http://hdl.handle.net/2346/1285 | |
dc.language.iso | eng | |
dc.rights.availability | Unrestricted. | |
dc.subject | Bimodal | |
dc.subject | Thermite | |
dc.subject | Aluminum | |
dc.subject | Nano-aluminum | |
dc.title | Combustion behaviors of bimodal aluminum size distributions in thermites | |
dc.type | Thesis |