Here is the abstract you requested from the IMAPS_2012 technical program page. This is the original abstract submitted by the author. Any changes to the technical content of the final manuscript published by IMAPS or the presentation that is given during the event is done by the author, not IMAPS.
|Evaluation of Exothermic Reactions in Cofired Platinum /Alumina Microsystems|
|Keywords: alumina, platinum, cofire|
|Cofired platinum/ high temperature cofire ceramic (HTCC) alumina ceramic microsystems are emerging as a technology of choice for implantable medical devices due to the long reliable history of Pt wire /alumina ceramics use as feedthrough structures in pacemakers. This work evaluates the development of a cofired materials system, including interconnect and high density via structures. Reactions previously unreported have been investigated, including the catalytic reaction with organic binders, the reduction of alumina into PtAl3 and the reduction of the melting point of platinum 300 - 5000C below its melting point, independent of the particle size (nano to micron size particles) or particle morphology. Firing atmosphere (air, hydrogen, inert), firing profiles and additives to control thermal expansion was evaluated to minimize exothermic reaction using high temperature X-ray diffraction, FIB nano-machining, SEM with EDS analysis and TEM for each of these conditions.|
|Kinzy Jones, Professor
Florida International university