Über eine Methode zur Schmelzpunktbestimmung an hochschmelzenden Metallen

Recent advances in the study of high-temperature behaviour of non-stoichiometric TaCx, HfCxand ZrCxcarbides in the domain of their congruent melting point

“…[2]. Here it should be noted that in both papers, as well as in all the similar studies of that time, the measurements were performed using the so-called Pirani method [3], which is actually nothing else but just the use of the direct Ohmic heating of a rod-shaped sample up to the melting temperature. The melting onset is defined by visual inspection of the blackbody hole in the sample through the optics of the disappearing-filament optical pyrometer.…”