|About this Abstract
|MS&T23: Materials Science & Technology
|Manufacturing and Processing of Advanced Ceramic Materials
|Limitations on the Sintering of Graded Particle Systems
|Daniel J. Delia, William M. Carty
|On-Site Speaker (Planned)
|Daniel J. Delia
The sintering of graded particle size distributions of alumina were evaluated for compacts prepared from dispersed and flocculated colloidal suspensions. Two step sintering (TSS) of a matrix phase composed of fine particles was attempted, ideally compensating for the percolation threshold of coarse and medium particles incorporated to increase the green density by improved packing. Relative density and microstructural evolution were evaluated to assess the role of processing and forming relationships with respect to constrained sintering conditions linked to the percolation threshold of large particles and to the limitation of densifying a fine particle network in the vicinity of a large dense inclusion within that fine particle network.