Accession Number : ADP007777

Title :   Metallorganic and Microwave Processing of Ceramic Powders and Compacts,

Corporate Author : DORTMUND UNIV (GERMANY F R)

Personal Author(s) : Willert-Porada, M. A. ; Vodegel, S.

Report Date : 27 APR 1992

Pagination or Media Count : 8

Abstract : Metallalcoholates as ceramic precursors were infiltrated into porous ceramic matrices and decomposed to sinteractive powders. Fully crystalline powders with cluster-like morphology were obtained by microwave heating (2.45 GHz) of the precursor whereas amorphous powders were obtained by conventional heating. After sintering the mechanical properties of the infiltrated ceramic are improved as compared to the matrix material. Microstructure modelling of Al2O3 ceramics towards 'self strengthened' materials by metallorganic infiltration and decomposition and by microwave heating is proposed.

Descriptors :   *MATRIX MATERIALS, *MICROWAVES, *SINTERING, *CERAMIC MATERIALS, DECOMPOSITION, HEATING, MATERIALS, MECHANICAL PROPERTIES, MICROSTRUCTURE, MORPHOLOGY, POWDERS, PRECURSORS, TOUGHNESS, DEFECTS(MATERIALS), FIRING(CERAMICS), GRAIN SIZE, SYMPOSIA.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE