Accession Number : ADA315866

Title :   Nanodesigning of Hierarchical Multifunctional Ceramics.

Descriptive Note : Final rept. 1 Sep 94-31 Dec 95,

Corporate Author : PRINCETON UNIV NJ DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Aksay, Ilhan A.

PDF Url : ADA315866

Report Date : 31 JUL 1996

Pagination or Media Count : 165

Abstract : The work presented in this report details the activities of the Ceramic Materials Laboratory at Princeton University during the period 1992 through 1995. The goals of the project were to develop methods for processing ceramic composites at the nanometer scale using a variety of processing methodologies. Materials systems included high (>1000 deg C) and low (<1000 deg C) materials (ceramic/ceramic and ceramic/metal composites respectively) and multifunctional ceramics. Several different approaches were used for the nanodesigning of materials: (1) reaction sintering, (2) exsolution, and (3) coassembly; two classes of materials were used as model systems for these processing methods: (1) structural ceramics and (2) functional ceramics. Shape forming research emphasized field assisted patterning, gel-casting, osmotic consolidation, and coassembly. Modeling efforts continued on (1) the interaction between inorganic materials and organic surfactants in the coassembly of particles an mesoporous matrices and (2) the sintering of nanosized particles. In general, our studies demonstrated that nanometer scale inclusions in oxide and non-oxide ceramic matrices can be achieved by any one of several different routes. Different materials systems require different methods of processing in order to achieve the level of control desired for the manufacture of nanocomposites.

Descriptors :   *COMPOSITE MATERIALS, *CERAMIC MATERIALS, METALS, AIR FORCE RESEARCH, MODELS, STRUCTURAL PROPERTIES, PROCESSING, MATRIX MATERIALS, INCLUSIONS, PARTICLES, OXIDES, ORGANIC MATERIALS, SURFACE ACTIVE SUBSTANCES, HIERARCHIES, MATERIALS LABORATORIES, INORGANIC MATERIALS, ACTIVATED SINTERING.

Subject Categories : Ceramics, Refractories and Glass
      Inorganic Chemistry
      Organic Chemistry
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE