Thermophysical Properties of Silicon-Carbide-Based Ceramic Composite Materials Obtained by Spark Plasma Sintering (SPS)

• Published in: Glass and ceramics Vol. 75; no. 9-10; pp. 340 - 344
• Main Authors: Loshchinin, Yu. V., Lebedeva, Yu. E., Slavin, A. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.01.2019; Springer; Springer Nature B.V
• Subjects: Additives; Aluminum compounds; Aluminum oxide; Analysis; Aviation; Boron carbide; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Composites; Density; Diffusivity; Electric properties; Glass; Hafnium compounds; Heat conductivity; Heat transfer; Materials Science; Natural Materials; Plasma sintering; Powders (Particulate matter); Science for Ceramic Production; Silicon; Silicon carbide; Silicon carbides; Silicon compounds; Sintering; Spark plasma sintering; Specific heat; Technology; Thermal conductivity; Thermal diffusivity; Thermal properties; Thermophysical properties; Yttrium oxide; differential scanning calorimetry (DSC); thermophysical properties; laser flash method; adiabatic calorimeter; thermal diffusivity; thermal conductivity; specific heat; ceramic composite materials
• ISSN: 0361-7610; 1573-8515
• DOI: 10.1007/s10717-019-00082-w

The factors influencing the thermal conductivity of SiC-based ceramic composite materials obtained by the spark plasma sintering technology with relative density 99% and B 4 C, AlN, Si 3 N 4 , Y 2 O 3 , Al 2 O 3 , and HfB 2 as additives are examined. The thermophysical properties were determined in the temperature range 20 – 1300°C: specific heat, thermal diffusivity, and thermal conductivity of composites. The thermal diffusivity and specific heat were measured by the laser-spark method. The measurements of specific heat are supplemented by measurements performed with a DSC and adiabatic calorimeter. The thermal conductivity is calculated using data on the thermal diffusivity, specific heat, and density.