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Information × Registration Number 0224U032969, (0124U003325) , R & D reports Title Processing of Boron-based Ceramic Materials Reinforced with MAB Phases for Structural Applications popup.stage_title Встановлення основних закономірностей структуроутворення під час іскроплазмового спікання композиційних матеріалів системи В4С-Ta4AlB4, дослідження їх фазового та хімічного складу і властивостей. Head Bogomol Yurii I., Доктор технічних наук Registration Date 13-12-2024 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description1 The aim of the work is synthesis and study of the properties of complex boride compounds of the MAB-phase type, as well as the creation of new composite materials based on them with increased mechanical and operational properties. popup.description2  This study presents the results of the synthesis of the TaAlB₄ MAB phase in a hydrogen environment at a temperature of 900°C. Conducting the synthesis in hydrogen facilitated the formation of boranes, which activated the process of MAB phase formation. After synthesis, the phase composition consisted of the TaAlB₄ phase and residual TaAlB₈. It is suggested that the formation of TaAlB₄ proceeds through an intermediate reaction involving the formation of the TaAlB₈ MAB phase. The obtained boron carbide-based composites with the addition of TaAlB₄ were fabricated using spark plasma sintering (SPS) in the temperature range of 1100–1700°C with MAB phase contents of 5, 10, 15, and 20 wt.%. Effective sintering of the composites occurred only with 20 wt.% TaAlB₄ at 1500°C. Higher temperatures led to the incongruent decomposition of the MAX phase. The resulting composites demonstrated high flexural strength (580 MPa) and fracture toughness (6.2 MPa*m0.5), as well as a twofold increase in wear resistance compared to materials without MAB phase additions. These findings hold significant potential for applications in fields requiring materials with high strength, fracture toughness, and wear resistance, particularly in defense industries, aerospace technologies, and energy systems. Product Description popup.authors Solodkii Yevhen V. Teslia Mariia A. Teslia Serhii Yu. popup.nrat_date 2024-12-13 Close