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W-ZrC composites without residual WC have been prepared for the first time by reactive infiltration at 1300°C for 1h in vacuum using a molten Zr2Cu alloy and a newly designed partially-carburized W powder as raw materials. The as-synthesized composites consist of two major phases of W and ZrC, in which the content of W is 65vol%. The reaction time needed to produce a fully densified W-ZrC bulk ceramic...
Reaction process and phase formation mechanisms in reactive hot pressing (RHP) of titanium and boron nitride blend powders have been investigated in vacuum. In temperatures of up to 1300°C, chemical reactions in the Ti–BN blend powder proceed via a solid-state diffusion process. Intermediate phases of hexagonal α-TiN 0.3 , tetragonal Ti 2 N, nonstoichiometric cubic TiN 0.9 ...
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