2017•High TemperatureRequires access

Self-heating effect at graphite ohmic heating

Alexander V. Kostanovskii, Margarita E. Kostanovskaya, M. G. Zeodinov

Abstract

We present the numerical modeling results of an experiment where the self-heating process was observed. The results confirm the supposition (put forward earlier) that self-heating occurs during the transmission of an electric current through a graphite specimen at temperatures above 3000 K and is the consequence of a combination of low thermal conductivity values and strong temperature dependence of specific electrical resistivity.

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Key concepts: Materials science, Electrical resistivity and conductivity, Graphite, Ohmic contact, Joule heating, Electric heating, Thermal, Thermal conductivity