Microstructure and Mechanical Properties of SiC-Materials Sintered in the Liquid Phase with the Addition of a Finely Dispersed Agent
- Authors: Perevislov S.N.1, Panteleev I.B.1, Shevchik A.P.1, Tomkovich M.B.2
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Affiliations:
- Saint Petersburg State Institute of Technology (Technical University)
- Ioffe Physical-Technical Institute of the Russian Academy of Sciences
- Issue: Vol 58, No 5 (2018)
- Pages: 577-582
- Section: Article
- URL: https://journal-vniispk.ru/1083-4877/article/view/248927
- DOI: https://doi.org/10.1007/s11148-018-0148-x
- ID: 248927
Cite item
Abstract
The free liquid phase sintering method was applied to obtain dense (relative density 99.5%) materials based on silicon carbide. A eutectic mixture of MgO, Y2O3 and Al2O3 of the composition corresponding to the coexisting garnet – spinel phase curve was used as the sintering agent. In the preparation of the charge powders, the method of chemical deposition from salt solutions was used, that produced eutectic composition oxides uniformly distributed on the silicon carbide powder particles. The materials produced show good mechanical properties: elastic strain energy 410 GPa, flexural strength 680 MPa, KIc = 6.0 MPa·m1/2, HV 21.5 GPa, the values of which are close to the corresponding indices for the hot-pressed carbide-silicon materials.
About the authors
S. N. Perevislov
Saint Petersburg State Institute of Technology (Technical University)
Author for correspondence.
Email: perevislov@mail.ru
Russian Federation, Saint Petersburg
I. B. Panteleev
Saint Petersburg State Institute of Technology (Technical University)
Email: perevislov@mail.ru
Russian Federation, Saint Petersburg
A. P. Shevchik
Saint Petersburg State Institute of Technology (Technical University)
Email: perevislov@mail.ru
Russian Federation, Saint Petersburg
M. B. Tomkovich
Ioffe Physical-Technical Institute of the Russian Academy of Sciences
Email: perevislov@mail.ru
Russian Federation, Saint Petersburg
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