화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.88, No.4, 1060-1063, 2005
Thermoplastic green machining for the fabrication of a piezoelectric ceramic/polymer composite with 2-2 connectivity
A piezoelectric ceramic/polymer composite with 2-2 connectivity was fabricated by thermoplastic green machining. A thermoplastic body, consisting of 60 vol% lead zirconate titanate ceramic particles (PZT) and 40 vol% thermoplastic binders, was computer numeric controlled-machined, creating periodic channels in the green PZT body. Following thermal treatment (binder burnout and sintering), a 25 vol% array of 147 mu m thin PZT slabs with an aspect ratio of seven separated by 442 mu m channels was fabricated. The channels were infiltrated with epoxy resin, in order to fabricate the PZT/epoxy composite with 2-2 connectivity. This novel process was evaluated in terms of the machinability and sinterability of the thermoplastic PZT compound. Also, the electromechanical properties of the PZT/epoxy composite were measured.