Novel powder-processing methods for advanced ceramics

Novel approaches for optimized powder processing of advanced ceramics are r eviewed with an emphasis on direct-casting methods and solid freeform fabri cation techniques. The fundamental principles for green body formation are discussed; a distinction is made between physical and chemical gels based o n the nature of the induced gelation. An overview of the properties of dens e suspensions is presented, with a focus on the factors controlling the max imum solids loading. Recent work on direct measurements of interparticle fo rces in ceramic systems is presented and related to rheological properties.