Investigation of physical properties of 0.9ZrN + 0.1ZrO2 ceramics at 2000–4500 K by current pulse heating

Abstract

The results of the study of zirconium nitride ceramics (0.9ZrN + 0.1ZrO2) in solid and liquid phases are presented: temperature dependences of the specific input energy (enthalpy), specific heat, heat of fusion, electrical resistivity at temperatures of 2000–4500 K. To measure these properties the method of microsecond electrical current pulse heating was used. The specimens were obtained by spark plasma sintering method. Data for the liquid phase were obtained for the first time. The end of the nitride ceramics melting was 2700 ± 70 K at an estimated pressure of 5 MPa. A comparison with the literature data is presented.