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Composite Stable to Corrosive Media in SiC-AL2O3-Si2ON2 System

¹ Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia
² Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia
³ Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia
⁴ Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia
⁵ Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia
⁶ Department of Chemical and Biological Technologies, Georgian Technical University, Tbilisi, Georgia

Journal of Electronics Cooling and Thermal Control·Volume 03 (2013)·Pages 74–84·Published 14 June 2013·DOI10.4236/jectc.2013.32009

Abstract

The object of the research was to study the composite received in impure nitrogen medium from silicon carbide, silicon and refractory clay mixture. With X-ray diffraction, petrographic and electron microscope methods the chemical proc esses happening at burning of the mentioned mixture in technical nitrogen medium and the kind of received binder, phase composition and basic properties are studied. It is stated that silicon carbide composite with complex binder is received, the main phases being: Si 2 ON 2 , 3Al 2 O 3· 2SiO 2 and SiO 2 . SiC-Al 2 O 3 composite is also received and studied. Water and acid resistance of composites (H 2 SO 4 , r —1.84 g/sm 3 ) and resistance to nonferrous metals and slag are stud ied. The received composites can be used for production of protective envelope of thermocouple for measuring of tem perature of ferrous and nonferrous metals at high temperatures.

KeywordsCompositeSilicon CarbideNitrogen AreaSilicon OxynitrideResistance

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Composite Stable to Corrosive Media in SiC-AL<sub>2</sub>O<sub>3</sub>-Si<sub>2O</sub>N<sub>2</sub> System

Abstract

References (28)