scholarly journals Corrosion and oxidation of silicon carbide on the nitride bond in the side lining of aluminum electrolysis cells

Author(s):  
A. L. Yurkov ◽  
A. P. Malakho ◽  
V. V. Avdeev

The main question for understanding the corrosion of silicon carbide on the nitride-silicon bond onboard linings is whether corrosion of Si3N4‒SiC material with gases (and, in particular, oxidation) is preceded by corrosion by molten electrolyte, or corrosion by molten electrolyte plays its own role in material degradation during service. It is more likely that the reactions of SiC and Si3N4 with cryolite melt pass through a preoxidation stage. Calculations show that most of the possible reactions of SiC and Si3N4 with oxygen and carbon monoxide and carbon dioxide have a positive volumetric effect, which reduces the porosity of the material, but may cause cracks in it. The resulting silicon oxide is dissolved in the electrolyte melt, and can also react with electrolyte components in the gas phase. Ill. 6. Ref. 24. Tab. 2.

2006 ◽  
Vol 47 (2) ◽  
pp. 78-82 ◽  
Author(s):  
N. V. Grachev ◽  
E. P. Orlov ◽  
D. V. Mukhin ◽  
V. P. Kryuchkova

2019 ◽  
Vol 484 (5) ◽  
pp. 559-562
Author(s):  
A. S. Lebedev ◽  
V. E. Eremyashev ◽  
E. A. Trofimov ◽  
V. N. Anfilogov

Phase equilibria in the Si–C–O system at temperatures of 1400–1700°C were modeled to theoretically determine the optimal conditions for implementing our proposed method of carbothermic synthesis of silicon carbide in reactors with an autonomous protective atmosphere. It was found that, depending on the ratio between the initial components and the synthesis temperature, the equilibrium products of the synthesis can be various combinations of silicon carbide, a gas phase, residual amounts of silicon oxide and carbon, andan oxide melt formed at high temperatures.


1996 ◽  
Vol 143 (5) ◽  
pp. 1654-1661 ◽  
Author(s):  
M. Ganz ◽  
N. Dorval ◽  
M. Lefebvre ◽  
M. Péalat ◽  
F. Loumagne ◽  
...  

1991 ◽  
Vol 250 ◽  
Author(s):  
Mark D. Allendorf ◽  
Carl F. Melius

AbstractEquilibrium calculations are reported for conditions typical of silicon carbide (SiC) deposition from mixtures of silane and hydrocarbons. Included are 34 molecules containing both silicon and carbon, allowing an assessment to be made of the importance of organosilicon species (and organosilicon radicals in particular) to the deposition process. The results are used to suggest strategies for improved operation of SiC CVD processes.


2021 ◽  
Author(s):  
A. V. Afanasev ◽  
V. A. Ilyin ◽  
V. V. Luchinin ◽  
S. A. Reshanov

2019 ◽  
Vol 671 ◽  
pp. 89-102 ◽  
Author(s):  
François Allard ◽  
Martin Désilets ◽  
Alexandre Blais

2019 ◽  
Vol 132 ◽  
pp. 1262-1276 ◽  
Author(s):  
François Allard ◽  
Martin Désilets ◽  
Marc LeBreux ◽  
Alexandre Blais

1999 ◽  
Vol 61-62 ◽  
pp. 176-178 ◽  
Author(s):  
A.N Vorob’ev ◽  
A.E Komissarov ◽  
A.S Segal ◽  
Yu.N Makarov ◽  
S.Yu Karpov ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document