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The wettability and reactivity between polycrystalline hot-pressed HfB 2 and liquid Ni, Ni–Ti and Ni–B alloys have been investigated by the sessile drop method up to 1520°C. Independently of the sintering aids (B 4 C, HfSi 2 ), high-temperature interactions led to the formation of a bimodal interface profile, due to the competition between the strong dissolution of HfB ...
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