Synthesis of Ti3SiC2 MAX phase ceramic materials using macrosized non-powder forms of titanium metal

International Conference on Synthesis and Consolidation of Powder Materials

Istomin, P.V.^1 ; Nadutkin, A.V.^1 ; Istomina, E.I.^1 ; Grass, V.E.^1

Federal Research Centre, Komi Science Centre, Ural Branch of the Russian Academy of Sciences, Kommunisticheskaya 24, Syktyvkar

167982, Russia^1

关键词: Competitive advantage;    Damage tolerant;    Internal structure;    Max phase ceramics;    Reaction system;    Reactive assemblies;    Sintering process;    Titanium metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/558/1/012015/pdf
DOI  :  10.1088/1757-899X/558/1/012015

来源: IOP

【 摘 要 】

A novel approach to the synthesis of Ti3SiC2 MAX phase ceramic materials using macrosized non-powder forms of titanium metal, such as foils, sheets, rods, tubes, etc., as a reactant was developed. According to this method, dispersions of SiC particles in slurries or pastes as well as tape casted polymer films filled with SiC particles can be used as a second component of the reaction system. Heat treatment under oxygen-free conditions at 1350-1500°C enables the SHS and RMI processes to occur in the reactive assemblies, allowing them to be sintered into a dense ceramic composites with a damage tolerant Ti3SiC2-based matrix reinforced with hard SiC particles. It was demonstrated that the proposed approach can be applied for fabricating Ti3SiC2/SiC ceramic matrix composites with specified internal structures including cellular and cannular ones. Since there is no need for a high pressure assistance during the sintering process, the method is expected to provide the Ti3SiC2 MAX phase ceramic materials with important competitive advantages through an increase in manufacturing productivity.