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SiC and HfC were used to tailor microstructures and improve properties of hot pressed HfB2-based ceramics. SiC and HfC particle, as the second phase, could hinder grain growth of HfB2. Compared with HfC, SiC grains grew slower, which was more effective to hinder grain growth of HfB2. The ternary ceramics HfB2–20vol%HfC–20vol%SiC had the finest microstructure, indicating the effect of SiC and HfC on...
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