Accession Number : ADA303952

Title :   High Strength, High Toughness In Situ Ceramic Composites.

Descriptive Note : Quarterly progress rept. 1 Nov 95-31 Jan 96,

Corporate Author : QUEST INTEGRATED INC KENT WA

Personal Author(s) : Savrun, Ender ; Toy, Cetin ; Henager, Charles

PDF Url : ADA303952

Report Date : FEB 1996

Pagination or Media Count : 6

Abstract : The thermal analysis, both differential thermal analysis (DTA) and thermalgravimetric analysis (TGA), of the 3TiC+2Si (composition 32) and 3TiC+3Si (composition 33) compositions showed that solid state displacement reactions start above 1000 deg C in TiC-Si system. A series of pressureless sintering experiments were carried out to determine the extent of reaction in 32 and 33 compositions at 1OOO deg C, 1300 deg C, and 1500 deg C under argon gas atmosphere. The powder mixtures were prepared by wet mixing technique as explained in the first progress report. Small 0.5 inches diameter pellet shaped samples were sintered for two hours at the predetermined temperatures. The sintered samples were analyzed by X-ray diffraction. The phases detected at each temperature are shown in Table 1. (MM)

Descriptors :   *COMPOSITE MATERIALS, *CERAMIC MATERIALS, STRESS STRAIN RELATIONS, DISPLACEMENT, X RAY DIFFRACTION, TOUGHNESS, BENDING, THERMAL ANALYSIS, HIGH STRENGTH, SILICON, ARGON, TITANIUM ALLOYS, SINTERING, DIFFERENTIAL THERMAL ANALYSIS.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE