Preparation of MoSi2–SiC–ZrB2 Structural Ceramics by Free Sintering
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Technological conditions for preparing ceramics based on MoSi2 hardened by SiC and ZrB2 that have enhanced physicomechanical properties (relative density ≥99.1%, bending strength 480 MPa) were experimentally investigated. The developed composites could be recommended for the creation based on them of functional structural ceramics operating at elevated temperatures in an oxidizing environment.
Keywordsmolybdenum disilicide silicon carbide sintering heat resistance
Experiments were performed on equipment at the Common Use Center Composition, Structure, and Properties of Structural and Functional Materials, Prometei CRSI of Structural Materials, Kurchatov Institute SRC, with financial support from the Ministry of Education and Science in the framework of contract No. 14.595.21.0004, unique identifier RFMEFI 59517X0004.
- 1.T. Ya. Kosolapova (ed.), Properties, Preparation and Application of Refractories: Handbook [in Russian], Metallurgiya, Moscow, 1986, 928 pp.Google Scholar
- 6.S. L. Shikunov and V. N. Kurlov, “SiC-based composite materials obtained by siliconizing carbon matrices,” Zh. Tekh. Fiz., 87(12), 1871 – 1878 (2017).Google Scholar
- 8.J. J. Petrovic, R. E. Honnell, and W. S. Gibbs, US Pat. 5,069,841, “Molybdenum disilicide alloy matrix composite,” Dec. 3, 1991.Google Scholar
- 9.S. S. Ordan’yan, A. I. Dmitriev, and E. S. Moroshkina, “Reaction of SiC with ZrB2,” Izv. Akad. Nauk SSSR, Neorg. Mater., 25(10), 1752 – 1754 (1989).Google Scholar
- 10.S. S. Ordan’yan, S. V. Vikhman, S. A. Larentseva, and V. V. Smirnov, “Structure of the section SiC–MoSi2 in the system Mo–Si–C,” Ogneupory Tekh. Keram., No. 11, 2 – 4 (2006).Google Scholar
- 11.S. S. Ordan’yan, “Common aspects of phase relations in SiC–Me IV/VB2 systems,” Zh. Prikl. Khim., 66(11), 2439 – 2444 (1993).Google Scholar