Accession Number : ADA322542

Title :   Synthesis of Ceramics from Solutions: Functionally Graded Composites, NanoComposites and Single Crystal Thin Films.

Descriptive Note : Technical rept. no. 5, Dec 95-Nov 96,

Corporate Author : CALIFORNIA UNIV SANTA BARBARA

Personal Author(s) : Lange, Fred F.

PDF Url : ADA322542

Report Date : 28 FEB 1997

Pagination or Media Count : 9

Abstract : A polyvinylmethylsilane precursor has been used for the epitaxial growth of SiC thin films on 6H-SiC single crystal substrates. The films were prepared by dipping the single crystalline 6H-SiC substrates into the precursor polymer solution with subsequent thermal treatments at different temperatures. Transmission electron microscopy (TEM) was used to characterize the microstructure and chemistry of the different SiC films. At 1100 deg C, the film was amorphous and contained substantial oxygen. At 1600 deg C, an epitaxial, single crystalline Beta-SiC film was observed.

Descriptors :   *SOLUTIONS(MIXTURES), *PRECURSORS, *COMPOSITE MATERIALS, *THIN FILMS, *SINGLE CRYSTALS, *EPITAXIAL GROWTH, *CERAMIC MATERIALS, *SILICON CARBIDES, MICROSTRUCTURE, METHYL RADICALS, SYNTHESIS, POLYMERS, HEAT TREATMENT, ELECTRON MICROSCOPY, TRANSMITTANCE, OXYGEN, CHEMISTRY, SILANES, VINYL RADICALS.

Subject Categories : Organic Chemistry
      Polymer Chemistry
      Crystallography
      Inorganic Chemistry
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE