Accession Number : AD0738865

Title :   Fabrication and Properties of Silicon Compounds.

Descriptive Note : Final rept. 1 Nov 70-31 Dec 71,

Corporate Author : WESTINGHOUSE RESEARCH LABS PITTSBURGH PA MATERIAL SCIENCES DEPT

Personal Author(s) : Lange,F. F. ; Terwilliger,G. R.

Report Date : 31 JAN 1972

Pagination or Media Count : 111

Abstract : A study was made to: Investigate the relation between strength, fracture energy, and microstructure; basically, it was the purpose of this task to determine why silicon nitride is so strong relative to other ceramics; Determine the hot-pressing behavior of silicon nitride with an emphasis on the role of the additive required to densify silcon nitride powder; Study the densification of silicon nitride by the powder-vehicle hot-pressing technique and dtermine the limitations of this technique; Determine the dielectric properties of reaction-sintered and hot-pressed silicon nitride between 1-10 GHz. (Author)

Descriptors :   (*HOT PRESSING, *SILICON COMPOUNDS), COMPACTING, NITRIDES, FRACTURE(MECHANICS), FLEXURAL STRENGTH, MICROSTRUCTURE, DIELECTRIC PROPERTIES, PHASE STUDIES

Subject Categories : Ceramics, Refractories and Glass
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE