Heat Conductivity of the Material Obtained by Melting Steel on Flame Supersonic Jet of Air–Propane Mix

In this article presented results of measurements of heat conductivity coefficient of the porous material, obtained by melting industrial steel grade 'Steel 3' in the range of temperatures from -140 to +400°C measured on ИT-λ-400 installation.Comparison of the obtained results with data existing in scientific literatures on porous steel became with various degrees of porosity, showed their good agreement.Heat conductivity of such porous samples unlike well-known mechanisms (electronic and phonon) heat conductivity of metals.Heat transfer in this material is explained by mechanisms, which include transfer through solid pore walls and through gases being inside pore.