So in my story I would like to create a human sized blade that can melt through anything using an alloy with a high melting point. So far I have two candidates
hafnium carbide with a melting point of 3900 °C
tantalum carbide with a melting point of 3800 °C.
My real question is are either of these candidates usable, or practical for a weapon like a sword, thanks in advance
(I would like to avoid stealing the idea of Raiden's High frequency blade if at all possible.)