Please consider attending the following:
MATERIALS ENGINEERING
“Stabilizing Aqueous Multicomponent Suspensions for Ceramic Processing”
By
Tess D. Marconie
Purdue MSE Preliminary Exam
Advisors: Professor Rodney W. Trice and Professor Jeffrey P. Youngblood
ABSTRACT
Colloidal processing of ceramics provides many benefits over dry powder processing, including denser green bodies,
controllable microstructures, and creation of complex-shaped parts. Processes which utilize water as the solvent are particularly attractive for being safe and environmentally friendly. Unfortunately, creating the highly loaded yet flowable suspensions appropriate
for these processing routes is no easy task. Well-stabilized suspensions have been made with a variety of materials; however, many studies focus on suspensions containing one type of ceramic particle, even though many interesting engineering ceramics are composites.
To create dense ceramic composites, a well-stabilized suspension is critical not only to realize high-density ceramic green bodies with efficient particle packing, but also to enable a homogenous distribution of phases, which will allow for good sintering
behavior and desired material properties. This review includes a description of the interactions that may occur between dissimilar particles in suspension and shows how stabilization can be achieved and utilized to create dense ceramics. The implications of
multicomponent suspensions on ceramic processing aspects such as use of polymer dispersants and microstructure development are also discussed.
Date: Thursday, December 12, 2019
Time: 8:30 A.M.
Place: ARMS 1021