aluminum – TechConnect Briefs

Properties and characterisation of an aluminum – silicon nitride fiber powder metal composite

Dougherty T., Xu Y., Nuenz Limited, NZ

There is an increasing demand for new light-weighting materials to improve fuel-efficiency in the automobile and aerospace industries. This has led to an increase in the use of aluminum over traditional metals, such as steel, [...]

Novel Aluminum-CNT composites for structural applications

Esawi A.M.K., Salama E., The American University in Cairo, EG

The latest enhancements in the mechanical behaviour of Al-CNT composites achieved by the research group are presented : an increase in tensile strength, indentation hardness and Young’s modulus of 69%, 72% and 23%, respectively. The [...]

Spherically symmetric oxidation model of aluminum nanoparticles

Ramazanova Z., Zyskin M., Martirosyan K.S., University of Texas at Brownsville, US

Kinetics of oxidation of metal nanoparticles acquired practical importance with rapidly developing nanoenergetic systems and materials. Nanoenergetic thermites include mixtures of Al and metal oxides in nanoscale. Our research focuses on modeling aluminum combustion in [...]

Polymerization Passivation Strategies for the Stabilization of Energetic Aluminum Nanomaterials

Jelliss P.A., Thomas B.J., Patel A., Lloyd E., Guliants E.A., Bunker C.E., Buckner S.W., Saint Louis University, US

We are developing aluminum nanoparticle (Al NP) passivation strategies based on our established protocols for polymerization of epoxide molecules with a view to fabricating air-stable Al NPs with long shelf-lives. Additionally we have discovered that [...]

Novel Carbon-Aluminum Materials

Jasiuk I., Nilufar S., Salamanca-Riba L., Isaacs R., Siddiqi S., University of Illinois at Urbana-Champaign, US

We characterized novel metal carbon materials called covetics. More specifically we study warm rolled Al 7075-carbon materials containing up to 5 wt% C. At macroscale we measured mechanical properties: Young’s modulus, ultimate tensile strength (UTS), [...]

Generating Hydrogen on Demand by Splitting Water with Al Rich Alloys

Woodall J.M., Ziebarth J., Allen J. Jeon C.R., Choi G., Purdue University, US

Our group has been pioneering the production of on-demand hydrogen using aluminum-gallium alloys to split water into hydrogen, heat, and alumina. Recently, we have found that we can split water on demand using solid alloys [...]

Nano-diamond Coatings on Aluminum 319 for Improved Tribological Properties

Blum R., Kalyanasundaram D., Nair R., Molian P., Iowa State University, US

Laser-induced phase transition and sintering of nano-diamond powders (4-8nm) was used to produce a thick (10-50um) strongly adherent nano-diamond/diamond-like carbon (nD-DLC) coatings on aluminum alloy 319. A transition to diamond-like carbon produced a Vickers hardness [...]

Ab Initio Simulation on Deposit Process of Al on Si Surface

Umeno Y., Kitamura T., Kyoto University, JP

It is important to clarify structure of contact between different materials for evaluation of properties of interfaces, which are substantial in electronic devices. Since interaction between different materials has to be evaluated based on the [...]

First-principles Study of Electron Transport through Atomistic Metal-Oxide-Semiconductor Structures

Zhang X., Fonseca L.R.C., Demkov A.A., Motorola, Inc., US

We describe a theoretical scheme to combine first-principles molecular dynamics simulation and non-perturbative scattering theory for transport calculations. We compare our approach with published results for electron transport through a single Al atom. The method [...]