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Using TiH 2 Si, B 4 C and W as raw materials, a multilevel ceramic composite (MLCC) of TiB 2 -Ti 0.9 W 0.1 C-SiC was produced by in situ reactive hot pressing. This MLCC has three levels: solid solution at the atomic level (Ti 0.9 W 0.1 C), particles on a micro-level (SiC particles) and platelet reinforcement...
The phase forming mechanisms in the chemical reaction Si + 2TiH 2 + B 4 C → SiC + 2TiB 2 + 2H 2 ↑ have been investigated using the XRD technique. It was observed that TiC and Ti 5 Si 3 transient phases existed in the above reaction, but the final phases of the reaction at 1350°C were only TiB 2 and β-SiC. Futher, the TiB 2 -SiC composite...
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