O. Wilson, Jr. and D. Gershon
Institute for Plasma Research, University of Maryland, College Park, Maryland 20742
J. Calame
Naval Research Laboratory, Washington, D.C. 20375
American Ceramic Society Annual Meeting, May 1998
ABSTRACT. Anionic substitutional effects were used to enhance the affinity of an oxalate modified copper carbonate hydroxide precipitate for core particle surfaces (Al00H, Al203). The coating phase was formed in ethanol solutions containing water, copper acetate monohydrate, diethyl oxalate, polyvinylpyrrolidone (PVP), and sodium hydroxide. Coated particles were characterized by transmission electron microscopy, electron diffraction, FTIR, and thermal gravimetric analysis (TGA). The TGA profile of the coating phase was characterized by a single, steep decomposition step that occurred at approximately 250oC. The thermal decomposition resulted in a 47 wt% loss in mass on conversion from the copper carboxylate to the CuO phase. The use of this unique coating system for studying fundamental issues in surface nucleation, colloidal interactions, coated particle characterization, and dielectric mixing phenomena will be presented. (Research support provided by AFOSR grant #F496209710270 is gratefully acknowledged.)