Accession Number : ADA327314

Title :   Uniaxial Strength and Mode I Fracture Toughness of Hot Pressed Silicon Carbide (SiC) Materials.

Descriptive Note : Final rept. Oct 94-Sep 95,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Cho, Kyu ; Katz, R. N. ; Bar-On, Isa

PDF Url : ADA327314

Report Date : JUN 1997

Pagination or Media Count : 30

Abstract : Silicon carbide (SiC) ceramics are being used and considered for a number of room temperature wear and optical applications where strength and fracture toughness are critical design parameters. Thus, there is a requirement for high-quality tensile strength and Weibull data for this class of materials. This report will present room temperature uniaxial tensile strength data, single-edge precracked beam (SEPB) fracture toughness (K sub IC) data, and fractographic analysis for several hot-pressed (HP) SiC ceramics. Strength and K sub IC data will be related to the microstructure and flaw population of the HP SiC materials studied.

Descriptors :   *HOT PRESSING, *TOUGHNESS, *FRACTURE(MECHANICS), *CERAMIC MATERIALS, *SILICON CARBIDES, OPTICAL PROPERTIES, TENSILE STRENGTH, WEIBULL DENSITY FUNCTIONS, MICROSTRUCTURE, PARAMETERS, STRENGTH(MECHANICS), ROOM TEMPERATURE, FRACTOGRAPHY, DEFECTS(MATERIALS), WEAR, AXES, AXIAL LOADS.

Subject Categories : Inorganic Chemistry
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE