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Influence of Green Compaction on the Sintering Behaviour of SiC-TiC-TiB2 Composites

The influence of different processing parameters like powder milling time and die pressure during manufacturing of SiC-TiC-TiB2 particulate composites has been investigated. The results show that at least a pressure of 90 MPa is necessary for obtaining fully dense samples. The degree of densification is dependent on the compaction process. At low green densities only the powder agglomerates are able to sinter. With increasing compaction pressure the contact area between the agglomerates increases also leading to increasing sintering densities up to fully dense samples.