Abstract
Pure tungsten and W–3wt.% Lu2O3 samples were fabricated by spark plasma sintering at 1600°C for 3min from 4h ball–milled powders. These samples were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and energy-dispersive spectroscopy, Vickers microhardness, and thermal conductivity analyses. Results revealed that doped Lu2O3 particles influenced the densifying and strengthening of W–3wt.% Lu2O3 composite compared with pure tungsten. The relative density and microhardness of pure tungsten were 93.49% and 446.4Hv, and those for W–3wt.% Lu2O3 samples were 96.21% and 551.7Hv, respectively.
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