Microcavity formation in alumina using Ti templates I: formation conditions

Title: Microcavity formation in alumina using Ti templates I: formation conditions
Creator: Goodshaw, Heather J.; Forrester, Jennifer S.; Hanson, Ronald E.; Kisi, Erich H.; Suaning, Gregg J.
Relation: Journal of the American Ceramic Society Vol. 92, Issue 6, p. 1333-1338
Publisher Link: http://dx.doi.org/10.1111/j.1551-2916.2009.03079.x
Publisher: Wiley-Blackwell Publishing
Resource Type: journal article
Date: 2009
Description: It has been found that fully enclosed microcavities can be engineered within Al₂O₃ ceramics using 125 μm diameter Ti wires as templates. A high-energy milling pretreatment of the alumina causes diffusion of the Ti into the surrounding alumina leaving all of the Kirkendall porosity consolidated into a central cavity. Control experiments using unmilled alumina confirm the necessity of the milling procedure and experiments with different milling media have excluded incidental doping by milling induced contamination as a primary driver of cavity formation. The internal microcavities produced here may lead to new applications in small scale instrumentation and implantable therapeutic devices.
Subject: microcavity formation; alumina; ceramics; titanium templates
Identifier: uon:7541
Identifier: http://hdl.handle.net/1959.13/807927
Identifier: ISSN:0002-7820
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