High Strength, High Toughness In Situ Ceramic Composites.

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)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1996
Accession Number
ADA303952

Entities

People

  • Cetin Toy
  • Charles Henager
  • Ender Savrun

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Ceramic Matrix Composites
  • Composite Materials
  • Differential Thermal Analysis
  • Diffraction
  • Diffraction Analysis
  • Displacement Reactions
  • High Temperature
  • Hot Pressing
  • Low Temperature
  • Materials
  • Materials Processing
  • Microscopy
  • Phase Separation
  • Thermal Analysis
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.