WB2 to WB3 phase change during reactive spark plasma sintering and pulsed laser ablation/deposition processes

摘要

Reactive spark plasma sintering (SPS) of WB2/WB3 ceramics from elements is studied; the sintering pressure dependence of the ratio of WB3 to WB2 in samples produced by SPS is discussed. Regardless of the sintering pressure, the obtained samples are very hard similar to 20 GPa. WB3 superhard films prepared by pulsed laser deposition (PLD) from selected SPS targets are presented.