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Obtaining silicon-carbide-based ceramics from ash and slag wastes
A. Ya. Pak, V. E. Gubin, G. Ya. Mamontov Tomsk Polytechnic University
Abstract:
The possibility of obtaining solid silicon-carbide-based ceramics from ash and slag wastes (ASWs) is demonstrated. The technological process contains three stages: (i) nonvacuum processing of the initial ASWs in dc arc discharge carbon plasma under normal atmospheric condition, (ii) cleaning of the obtained powdered material from unbound carbon by annealing in atmospheric furnace, and (iii) final spark plasma sintering of the powder. Analytical data indicate that the obtained product is a silicon-carbide-based ceramics with a density of 3.05 g/cm$^3$ and a hardness of up to 19.9 GPa.
Keywords:
silicon carbide, electric-arc synthesis, nonvacuum method, spark plasma sintering.
Received: 23.03.2020 Revised: 13.04.2020 Accepted: 13.04.2020
Citation:
A. Ya. Pak, V. E. Gubin, G. Ya. Mamontov, “Obtaining silicon-carbide-based ceramics from ash and slag wastes”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 46:14 (2020), 21–24; Tech. Phys. Lett., 46:7 (2020), 695–698
Linking options:
https://www.mathnet.ru/eng/pjtf5045 https://www.mathnet.ru/eng/pjtf/v46/i14/p21
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Abstract page: | 67 | Full-text PDF : | 43 |
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