ОТ ЖЕЛЕЗОБЕТОНА ДО CF/UHTC-SIC: СОВЕРШЕННО НОВЫЙ МЕТОД И МЕХАНИЗМ УПЛОТНЕНИЯ ПРИ ТЕМПЕРАТУРЕ 1300 °C БЕЗ ДАВЛЕНИЯ

The article considers existing techniques for compacting Ultra High-Temperature Ceramic (UHTC) matrix composites poses a significant obstacle due to the requirement for strong warming index and pressure. UHTCs are highly esteemed for their exceptional heat resistance and robust mechanical properties, making them essential for applications demanding durability in severe thermal environments. This study aims to develop and assess an innovative compaction method for UHTC matrix composites at 1300°C without pressure to enhance material attributes effectively. The primary focus is on exploring how this progressive consolidation approach influences the characteristics of these composites, giving significant advancements in material performance. This strategy aims to obviate the necessity for excessive heat and pressure during the compaction process, offering a more efficient and potent alternative. It has a name of Densification at Low Temperature (DLT) method. The methodology employed entailed a sequence of actions, such as processing the carbon fabric, introducing ceramic slurry, saturating with polycarbosilane, and subjecting the material to pyrolysis at 1300°C without pressure. Summing up, the results of the study demonstrated that the DLT method successfully generated dense samples with noticeable enhancements in mechanical strength and fracture resilience. Thus, the Densification at Low Temperature technique displays substantial potential in advancing the development of highperformance fiber-reinforced ceramic matrix composites.