Low Pressure Compaction of SHS (Self-Propagating High-Temperature Synthesis) Prepared Ceramics.
Abstract
Titanium carbide, Titanium diboride and cermets of these compounds have been synthesized by the Self-Propagating High-Temperature Synthesis (SHS) process. It has been shown, definitively, that the mechanism of Ti+C powders reacting to form TiC is the movement of melted titanium to the solid carbon lattice. Extensive porosity in the product is caused by this movement of the titanium but additional voids are formed from the expulsion of contaminant gases during the combustion process. In order to eliminate these voids and porosity in the material, the reacted samples have been compacted up to pressures of 0.41GPA (60Kpsi) immediately after the completion of the combustion. These products have results in samples with densities greater than 95% and microhardness approaching values obtained by conventional sintering techniques. Keywords: Solid Combustion, Ceramics, Ceramics Processing, Cermets, Titanium Carbide, Titanium Diboride Carbon.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1987
- Accession Number
- ADA180783
Entities
People
- Andrus Niiler
- Michael A. Riley
Organizations
- Ballistic Research Laboratory