Influence of Interphase Physico-Chemical Processes on the Structure and Strength Characteristics of a High-Temperature Soldered SiC Ceramic Joint

Resumo

The optimal characteristics of porous samples based on SiC powders are determined, enabling us to obtain defect-free siliconized materials. A composition for a silicon-carbide ceramics joint with the composition SiO₂–Al₂O₃–Y₂O₃ (38:27:35 wt.%) is selected based on data of DSK analysis and experiments on wetting of SiC substrates using the stationary drop method, enabling us to obtain a stable SiC ceramic joint without visible fractures or pores by means of spark plasma sintering (SPS/FAST) accompanied by simultaneous induction heating.