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A Novel Manufacturing Processing Route for Forming High-Density Ceramic Armor Materials: Phase I - SBIR

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Final rept. 25 Apr 1991-11 Dec 1991

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The objective of the Phase I small business innovative research SBIR project was to demonstrate the feasibility of applying the Combustion Synthesis CSCeracon Consolidation Process for forming 10-cm-diameter, 2.5-cm-thick high-density titanium carbide TiC and titanium diboride TiB2 pieces. The Phase I project demonstrated for the first time the feasibility of CS initiation to form TiC and TiB2 by using Ceracons hot, granular media and their in-situ consolidation. The effects of applied pressure and pressure-transmitting media PTM temperature in controlling density, as well as thermal management issues to prevent cracking in applying the CSCeracon process to form TiC and TiB2, have been identified. In-situ CSCeracon consolidation to densities exceeding 98 was demonstrated for fabricating 10-cm-diameter, 2.5-cm-thick TiC pieces. The CSCeracon-processed, high-density TiC specimen has a fine grain size, microhardness values exceeding 2,500 kgmm2, and compressive strength of 1.3 GPa. Due to the use of inexpensive conventional forging equipment and a low-cost grain for both initiating self-propagating high-temperature synthesis SHS and consolidation, this novel approach has the potential to be significantly more cost effective than currently used conventional hot pressing HP or hot isostatic pressing HiPing of TiC and TiB2 powders. A set of recommendations for the technical approach to be followed in process upscaling in Phase II to fabricate larger size tiles of TiC material is provided.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Thermodynamics

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