Publication:
Fabrication of porous metals via selective phase dissolution of an Al-Cu alloy

dc.contributor.advisor Suárez, O. Marcelo
dc.contributor.author Vargas-Martinez, Juan C.
dc.contributor.college College of Engineering en_US
dc.contributor.committee Hernández, Arturo
dc.contributor.committee Quintero, Pedro
dc.contributor.committee Perez, Nestor
dc.contributor.department Department of Mechanical Engineering en_US
dc.contributor.representative Cardona, Nelson
dc.date.accessioned 2018-11-29T18:56:29Z
dc.date.available 2018-11-29T18:56:29Z
dc.date.issued 2018-06-01
dc.description.abstract Through free corrosion in sodium hydroxide, a new porous material was successfully fabricated by removing a single phase of the aluminum-copper alloy. This selective phase dissolution was performed for the eutectic composition of the aluminum-copper binary system and additionally for two hypereutectic compositions. The porosity of the material depends on the microstructure formed in the solidification process. For this, several solidification methods were analyzed in order to define the most convenient in terms of uniformity and refinement in the pore and ligament sizes. The concentration of the solution was determined by observing the effectiveness of the process during and after the corrosion, when the 10% v/v aqueous solution of sodium hydroxide was used better results were observed. The porosity was calculated after the selective dissolution through analysis of images obtained from a scanning electron microscope. In addition, the average pore and ligament size was measured for each composition. Finally, the effectiveness of the process was verified using x-ray diffraction, which showed that under the proposed methodology there was complete removal of one of the phases of the alloy. en_US
dc.description.graduationSemester Spring en_US
dc.description.graduationYear 2018 en_US
dc.description.sponsorship This research was supported by the National Science Foundation under Grant No. 1345156 (CREST program). en_US
dc.identifier.uri https://hdl.handle.net/20.500.11801/1565
dc.language.iso en en_US
dc.rights.holder © 2018 Juan Carlos Vargas Martinez en_US
dc.rights.license All rights reserved en_US
dc.subject Selective dissolution en_US
dc.subject Free corrosion
dc.subject.lcsh Porous materials en_US
dc.subject.lcsh Porosity en_US
dc.subject.lcsh Aluminium-copper alloys en_US
dc.subject.lcsh Metals -- Dissolution en_US
dc.subject.lcsh Sodium hydroxide en_US
dc.subject.lcsh Solidification en_US
dc.title Fabrication of porous metals via selective phase dissolution of an Al-Cu alloy en_US
dc.type Thesis en_US
dspace.entity.type Publication
thesis.degree.discipline Mechanical Engineering en_US
thesis.degree.level M.S. en_US
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