Zirconium Carbide Vapor Composition Analysis at Temperatures above 3500 K
The zirconium carbide vapor composition study has been performed up to temperature 4150 K. Combination of mass-spectrometry and laser heating was used to perform the analysis. Following particles were found in mass-spectrums: atomic and molecular carbon, zirconium2isotopes, ZrC<sub>2</sub> and Zr<sub>2</sub>C - compound that has not been detected previously. Evaporationenthalpies of components were calculated. Temperature dependence of vapor compounds relation allows deducing that surface composition changes greatly in phase transitions.