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  1. No Access

    Article

    Aluminophosphate-bonded silicon carbide ramming body

    A silicon carbide body with an aluminophosphate bond after heat processing has a high strength and high refractoriness under load at 2 kg/cm2.

    N. I. Krasotkina, V. V. Levchuk, N. I. Voronin in Refractories (1969)

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    Stability of silicon carbide to hydrofluoric, nitric, and sulfuric acids

    α-SiC is practically undecomposed by hydrofluoric acid and a mixture of hydrofluoric acid and sulfuric and nitric acids, regardless of grain size.

    N. I. Krasotkina, V. S. Yakovleva, N. I. Voronin, S. P. Shmitt-Fogelevich in Refractories (1968)

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    Firing silicon carbide refractories in a nitrogen atmosphere

    During the firing of specimens of silicon carbide and silicon in a nitrogen atmosphere at 1200–1400°C, the silicon is converted almost completely to silicon nitride. The content of impurities of SiO2 and Si varie...

    N. I. Voronin, N. I. Krasotkina, M. S. Fraifel'd in Refractories (1967)

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    Silicon carbide refractories with a complex bond of Si2On, SiC, Si3N4

    The physical and chemical processes taking place during the firing of products obtained from silicon carbide and silicon largely depend on the gaseous medium.

    N. I. Voronin, N. I. Krasotkina, M. S. Fraifel'd in Refractories (1967)

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    Life of silicon carbide heaters in argon at high temperatures

    The electrical heating elements made from silicon carbide in argon age slowly and may operate for more than 300 h at a temperature on the surface of 1700‡C and more than 200 h at 1800‡C.

    N. I. Voronin, V. L. Kuznetsova, R. I. Bresker in Refractories (1967)

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    Quartz products made by slip casting

    From finely milled fused quartz it is possible to obtain, by the slip method, adequately strong quartz products with high thermal-shock resistance at low firing temperatures. A substantial increase in the stre...

    N. I. Voronin, R. S. Churakova in Refractories (1967)

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    Article

    Impregnating the ends of sic heaters with silicon, some metals and mixtures

    The silicon and mixes enriched with it have an excellent wetting action on heaters made from silicon carbide.

    N. I. Voronin, A. A. Kortel', R. I. Bresker in Refractories (1966)

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    Sintering and technical properties of silicon carbide heaters in relation to the grain size

    Sintering of blanks of SiC of different grain-size distributions is accompanied by slight recrystallization and the appearance of fine grains not present in the original silicon carbide.

    N. I. Voronin, D. D. Khrycheva, R. I. Bresker in Refractories (1966)

  9. No Access

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    The service of silicon-carbide electric heaters in different atmospheres

    The atmosphere in which the heating element works has a big influence on the life. A protective atmosphere (nitrogen, argon) creates the most favorable conditions for the life of the heater. Failure of the rod...

    N. I. Voronin, V. L. Kuznetsova, R. I. Bresker in Refractories (1965)

  10. No Access

    Article

    Testing the durability of silicon carbide heaters in air atmospheres

    The life of heating elements consisting mainly of β-SiC at 1400°C is good; their life is longer than that of heaters made ofα-SiC.

    N. I. Voronin, V. L. Kuznetsova, R. I. Bresker in Refractories (1964)

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    The use of ceramic recuperators in soaking pit furnaces

    Mixtures of SiC and slag and clinker do not fuse at 1300°C.

    N. I. Krasotkina, N. I. Voronin, I. S. Barskaya in Refractories (1964)

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    The effect of the firing schedule and slag additions on the homogeneity of silicon carbide products bonded with silica

    With the addition of 5–10% scale and the same amount of silicon, the articles proved to be homogeneous without black cores.

    N. I. Krasotkina, N. I. Voronin in Refractories (1964)

  13. No Access

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    Siliconized graphite products for protecting immersion thermocouples used to measure liquid steel temperatures

    Sheaths made of siliconized graphite by the VIO (All Union Institute of Refractories) technology with preheating up to 1300° C are suitable for repeated measurement of liquid-steel temperatures.

    N. I. Krasotkina, N. I. Voronin, V. V. Levchuk in Refractories (1964)

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    Article

    Refractory products and ramming bodies for high pressure burners of steam boilers

    Silicon carbide rammed bodies are suitable for lining the combustion zones of high-pressure cyclone burners of steam boilers. The life of the silicon carbide body depends on the heat resistance of the supporti...

    N. I. Voronin, N. I. Krasotkina, A. I. kulik, T. S. Karmanova, G. E. Levin… in Refractories (1963)

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    Influence of impurities in silicon carbide on the properties of heating elements

    Impurities in silicon carbide have a considerable effect on the life of heating elements and their physicomechanical properties. It is necessary to use silicon carbide of at least 98% purity for the manufactur...

    R. I. Bresker, N. I. Voronin, D. D. Khrycheva in Refractories (1963)

  16. No Access

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    The influence of impurities in the original materials on the properties of refractories made of zirconia

    The effects of admixtures of the oxides of iron, aluminum, titanium, silicon and phosphorus on sintering, strength factors, thermal shock resistance, deformation under load, linear expansion and microstructure...

    N. I. Voronin, V. S. Gorodetskii, E. I. Khavkina in Refractories (1963)

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    Conference on coordinating research on non-metal electric heaters

    N. I. Voronin in Refractories (1962)

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    Article

    Phase composition of silicon-nitride-bonded carborundum refractories

    Using electron-microscopic study, we confirmed the presence ofα-Si3N4,Β-Si3N4 andΒ-SiC in specimens of a mixture of silicon carbide and silicon after they had been fired in a coke charge in an oil furnace.

    N. I. Voronin, N. I. Krasotkina in Refractories (1962)

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    State of production and ways of improving quality of carborundum refractories

    N. I. Voronin, N. I. Krasotkina in Refractories (1961)

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    Industrial test batch of carborundum refractories with silicon nitride binder

    The production process developed at the All-Union Institute of Refractories and tested at the Semiluki Plant showed that the properties of carborundum refractories prepared with a silicon nitride binder are su...

    N. I. Voronin, N. E. Krasotkina, A. P. Stavorko, R. S. Mil'shenko in Refractories (1961)

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