18.
The thermal and electrical properties of MoSi
2 and/or SiC-containing ZrB
2-based composites and the effects of MoSi
2 and SiC contents were examined in hot-pressed ZrB
2–MoSi
2–SiC composites. The thermal conductivity and electrical conductivity of the ZrB
2–MoSi
2–SiC composites were measured at room temperature by a nanoflash technique and a current–voltage method, respectively. The results indicate that the thermal and electrical conductivities of ZrB
2–MoSi
2–SiC composites are dependent on the amount of MoSi
2 and SiC. The thermal conductivities observed for all of the compositions were more than 75 W·(m·K)
−1. A maximum conductivity of 97.55 W·(m·K)
−1 was measured for the 20 vol% MoSi
2-30 vol% SiC-containing ZrB
2 composite. On the other hand, the electrical conductivities observed for all of the compositions were in the range from 4.07 × 10–8.11 × 10 Ω
−1·cm
−1.
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