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329 results on '"Newaz, Golam"'

7. Thin Film Coatings as Electrodes in Neuroscience

Author

Khan, Saida, Mian, Ahsan, Newaz, Golam, Aizawa, Masuo, Series editor, Greenbaum, Elias, Editor-in-chief, Andersen, Olaf S., Series editor, Austin, Robert H., Series editor, Barber, James, Series editor, Berg, Howard C., Series editor, Bloomfield, Victor, Series editor, Callender, Robert, Series editor, Chance, Britton, Series editor, Chu, Steven, Series editor, DeFelice, Louis J., Series editor, Deisenhofer, Johann, Series editor, Feher, George, Series editor, Frauenfelder, Hans, Series editor, Giaever, Ivar, Series editor, Gruner, Sol M., Series editor, Herzfeld, Judith, Series editor, Humayun, Mark S., Series editor, Joliot, Pierre, Series editor, Keszthelyi, Lajos, Series editor, Knox, Robert S., Series editor, Lewis, Aaron, Series editor, Lindsay, Stuart M., Series editor, Mauzerall, David, Series editor, Mielczarek, Eugenie V., Series editor, Niemz, Markolf, Series editor, Parsegian, V. Adrian, Series editor, Powers, Linda S., Series editor, Prohofsky, Earl W., Series editor, Rubin, Andrew, Series editor, Seibert, Michael, Series editor, Thomas, David, Series editor, and Nazarpour, Soroush, editor

Published
2013
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26. Wear characteristics of NiTi/Al6061 short fiber metal matrix composite reinforced with SiC particulates

Author

Akalin, Ozgen, Ezirmik, K. Vefa, Urgen, Mustafa, and Newaz, Golam M.

Subjects
Silicon carbide -- Usage, Silicon carbide -- Atomic properties, Mechanical wear -- Research, Aluminum alloys -- Mechanical properties, Aluminum alloys -- Materials, Aluminum alloys -- Atomic properties, Metal fibers -- Usage, Metal fibers -- Composition, Particles -- Usage, Particles -- Composition, Nickel -- Usage, Titanium -- Usage, Science and technology
Abstract

Wear characteristics of Al6061 composites, reinforced with short NiTi fibers, were investigated. The NiTi/Al6061 composite samples were fabricated using pressure-assisted sintering process in ambient air where the NiTi fibers are aligned unidirectional in the Al matrix. In addition, NiTi/Al6061 composite with 5 wt % SiC particulates and monolithic Al6061 and Al6061 with 5 wt % SiC particulates were processed in similar conditions. The wear tests were performed using a reciprocating tribometer in ball-on-flat configuration where the counterbody material was martensitic steel. The effects of fiber isotropy and SiC reinforcements on wear resistance were experimentally investigated in dry sliding. Wear properties of the samples were studied using an optical profiler and a scanning electron microscope analysis. The results showed that transverse NiTi fibers improve the wear resistance significantly. Samples with transverse fiber orientation show mostly abrasive wear, whereas, monolithic and parallel samples show adhesive wear mechanism. In addition, SiC reinforcements improve the wear resistance of the composite and the monolithic samples. Since the Al6061 matrix material is smeared onto NiTi fibers in a short period, all composite samples show similar frictional characteristics after certain period of running in dry sliding. [DOI: 10.1115/1.4002332] Keywords: wear mechanism, NiTi wires, fiber orientation, short fiber composites

Published
2010

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