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Fracture of Nanoporous Gold


Abstract This research examines several critical aspects of the so-called "film induced cleavage" model of stress corrosion cracking using silver-gold alloys as the parent-phase material. The model hypothesizes that the corrosion generates a brittle nanoporous film, which subsequently fractures forming a high-speed crack that is injected into the uncorroded parent-phase alloy. This high speed crack owing to its kinetic energy can penetrate beyond the corroded layer into the parent phase and thus effectively reducing strength of the parent phase. Silver-gold alloys provide an ideal system to study this effect, as hydrogen effect can be ruled out on thermodynamic basis. During corrosion of the silver-gold alloy, the less noble metal i.e. sil... (more)
Created Date 2014
Contributor Badwe, Nilesh Umesh (Author) / Sieradzki, Karl (Advisor) / Peralta, Pedro (Committee member) / Oswald, Jay (Committee member) / Mahajan, Ravi (Committee member) / Arizona State University (Publisher)
Subject Materials Science / Mechanical engineering / Film Induced Cleavage / Fracture / Mechanical Properties / Nanoporous Gold / Stress Corrosion Cracking
Type Doctoral Dissertation
Extent 122 pages
Language English
Copyright
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Note Doctoral Dissertation Materials Science and Engineering 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis