Abstract
The creation of new effective technologies and materials with an optimum ratio of quality and price is a significant achievement. The high cost of ceramics made of silicon nitride is a result of the expensiveness of the initial powder. The present study of the applicability of α-Si3N4 powder prepared by the method of self-developing high-temperature synthesis (SHS) in hot-pressing technology has shown that although materials based on SHS α-Si3N4 powders are inferior to materials based on plasmachemical compositions, their high strength, crack resistance, and hardness at a moderate density in combination with the lower cost of the initial raw material make them suitable for operation in aggressive media under moderate temperatures and loads. The materials developed have also shown high armoring properties.
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References
I. Yu. Kelina, I. I. Tkacheva, A. V. Arakcheev, et al., “Hot-pressed ceramic materials for structural purposes,”Ogneupory, No. 3, 28 – 30 (1992).
I. I. Tkacheva, “Some regular features of phase and structure formation in hot pressing of ultradisperse powders,”Ogneupory, No. 4, 8 – 11 (1993).
S. Yu. Sharivker, I. P. Borovinskaya, A. S Mukas'yan, and V. V. Karpov, “Mechanical activation of powders of nitrides of silicon and aluminum prepared by the method of self-developing high-temperature synthesis,”Poroshkovaya Metallurgiya, No. 8, 3 – 8 (1993).
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Translated from Ogneupory i Tekhnicheskaya Keramika, No. 9, pp. 20 – 24, September, 1996.
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Kelina, I.Y., Drobinskaya, V.A. & Plyasunkova, L.A. Hot-pressed ceramics based on SHS silicon nitride. Refractories 37, 312–315 (1996). https://doi.org/10.1007/BF02307257
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DOI: https://doi.org/10.1007/BF02307257