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The thought crossed my mind, but it just looks really careless. So do we have a connoisseur in the house? ;v) Or was hafnium carbide near a heat source on the USS Maine?
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Removed reference to use of HfC in nuclear control rods. I can't find any reference to that application aside from this
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Refractory means that the melting point under vacuum is very high. HfC starts oxidizing (in the presence of an oxidizer of course) at 430C.
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What electrical and thermal conductivity for HfC of particular compositions ? Band gap ? Temp-co ? -
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