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Contact Information: Tanya Klein Public Relations 973-596-3433

Yasmine Aly, of Bloomfield, Receives NJIT Top Honor for Research

Yasmine Aly, of Bloomfield,  a doctoral candidate studying chemical engineering at NJIT received on April 14, 2010, the first-place gold medal for her graduate research project, “Aluminum-based Reactive Composite Powders” at the NJIT Dana Knox Student Research Showcase on April 14, 2010. 

“This work is focused on materials designed to be used in energetic materials for a variety of applications,” she said. “In addition to military technologies, these materials can be used in automotive airbags, for spacecraft propulsion, in industrial or specialized heaters, and for in-situ welding. Future applications can include materials for hydrogen generation and advanced catalysts.”

Multiple aluminum-based (AL) nano-composite reactive materials were explored  including thermite compositions, coated powders and multilayered foils. In most cases, a highly exothermic reaction is expected to occur between the aluminum and one of the additional components resulting in an accelerated ignition. However, additional solid oxidizers inevitably reduce the overall energy density of the metal fuel additives. 

This project explored a new type of Al-based reactive composite material.  In these materials, aluminum was mixed, but not alloyed, with a metal, rather than an oxide.  The bulk compositions are aluminum-rich to take advantage of the high aluminum combustion enthalpy. 

Composite materials in the systems of Al-Zn, Al-Fe, and Al-Ni were prepared by mechanical milling of aluminum powders mixed with powders of the respective metal additives.  For each material, structure and composition were characterized using electron microscopy and x-ray diffraction.  Reactivity of the prepared powders was studied using thermal analysis and heated filament ignition experiments. 

It was observed that oxidation kinetics of the prepared aluminum-metal reactive composite materials differ substantially from the kinetics of aluminum oxidation.  It was also observed that reduced ignition temperatures are achieved for different Al-metal composite materials.  Detailed studies of the reaction processes werer carried out to establish mechanisms of accelerated oxidation kinetics and reduced ignition temperatures for different materials.

One of the nation's leading public technological universities, New Jersey Institute of Technology (NJIT) is a top-tier research university that prepares students to become leaders in the technology-dependent economy of the 21st century. NJIT's multidisciplinary curriculum and computing-intensive approach to education provide technological proficiency, business acumen and leadership skills. With an enrollment of more than 10,000 graduate and undergraduate students, NJIT offers small-campus intimacy with the resources of a major public research university. NJIT is a global leader in such fields as solar research, nanotechnology, resilient design, tissue engineering, and cyber-security, in addition to others. NJIT ranks 5th among U.S. polytechnic universities in research expenditures, topping $110 million, and is among the top 1 percent of public colleges and universities in return on educational investment, according to PayScale.com.