Obtaining Silicon-Carbide-Based Ceramics from Ash and Slag Wastes

Abstract

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/cm³ and a hardness of up to 19.9 GPa.

Original language	English
Pages (from-to)	695-698
Number of pages	4
Journal	Technical Physics Letters
Volume	46
Issue number	7
DOIs	https://doi.org/10.1134/S1063785020070226
Publication status	Published - 1 Jul 2020

Keywords

electric-arc synthesis
nonvacuum method
silicon carbide
spark plasma sintering

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1134/S1063785020070226

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title = "Obtaining Silicon-Carbide-Based Ceramics from Ash and Slag Wastes",

abstract = "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/cm3 and a hardness of up to 19.9 GPa.",

keywords = "electric-arc synthesis, nonvacuum method, silicon carbide, spark plasma sintering",

author = "Pak, {A. Ya} and Gubin, {V. E.} and Mamontov, {G. Ya}",

year = "2020",

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doi = "10.1134/S1063785020070226",

language = "English",

volume = "46",

pages = "695--698",

journal = "Technical Physics Letters",

issn = "1063-7850",

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T1 - Obtaining Silicon-Carbide-Based Ceramics from Ash and Slag Wastes

AU - Pak, A. Ya

AU - Gubin, V. E.

AU - Mamontov, G. Ya

PY - 2020/7/1

Y1 - 2020/7/1

N2 - 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/cm3 and a hardness of up to 19.9 GPa.

AB - 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/cm3 and a hardness of up to 19.9 GPa.

KW - electric-arc synthesis

KW - nonvacuum method

KW - silicon carbide

KW - spark plasma sintering

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