J. R. Groza, University of California at Davis, Davis, CA
This presentation will look at nanopowder sintering demands to achieve high densities and final fine grain size. Electrical field/current assisted sintering has emerged as a scientifically challenging and technologically important processing avenue for nanopowders. The scientific interest is due to new phenomena, which occur upon field exposure such as microdischarges with resultant surface effects and electrodiffusion. Technologically, electrical field application has distinct benefits: enhanced sintering rates, control and production of novel microstructures, and flexible manufacturing capabilities (near net shape, modulated structures). Results of field assisted consolidation of conductive and non-conductive nanopowders, and a discussion of electrically induced sintering mechanisms will be presented.
Summary: This presentation will look at nanopowder sintering demands to achieve high densities and final fine grain size. Electrical field/current assisted sintering has emerged as a scientifically challenging and technologically important processing avenue for nanopowders. The scientific interest is due to new phenomena, which occur upon field exposure such as microdischarges with resultant surface effects and electrodiffusion. Technologically, electrical field application has distinct benefits: enhanced sintering rates, control and production of novel microstructures, and flexible manufacturing capabilities (near net shape, modulated structures). Results of field assisted consolidation of conductive and non-conductive nanopowders, and a discussion of electrically induced sintering mechanisms will be presented.
