Conclusions
Long cans fabricated from alumina with various additives were found to be highly durable in the strongly reducing medium in carbon black reaction vessels and in the corrosive gaseous medium in glass-making furnaces. Good results were obtained also with cans protecting the thermocouples measuring the temperature of the hot blast of blast furnaces and the thermocouples used for studying the crystallization and cooling of steel ingots in their molds.
Cans fabricated from stabilized zirconia were found to have satisfactory durability in nitrogen and argon media at 1900°C in induction furnaces with graphite heaters, and cans fabricated from magnesia gave satisfactory long-term performance in an argon medium at 2400°C.
Cans fabricated from alumina, magnesia, and zirconia reduce the thermal lag of thermocouples owing to their high thermal conductivity and permit an extension of the range of temperatures measured in various media.
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Literature cited
I. F. Usatikov, Transactions of the Ukrainian Scientific-Research Institute of Refractories [in Russian], Vol. 7, Metallurgiya, Moscow (1963), pp. 110–114.
I. F. Usatikov, “Theoretical and technological research on refractories,” Transactions of the Ukrainian Scientific-Research Institute of Refractories [in Russian], Vol. 8, Khar'kov State University (1965), pp. 21–65.
I. F. Usatikov and Z. N. Razsolova, Authors' Certificate 161266; Byull. Izobret. i Tovarnykh Znakov, No. 6, 89 (1964).
I. F. Usatikov, Ogneupory, No. 2, 20–21 (1966).
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Translated from Ogneupory, No. 6, pp. 29–33, June, 1974.
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Usatikov, I.F. Principal properties and service tests of cans and tubes of pure oxides. Refractories 15, 362–365 (1974). https://doi.org/10.1007/BF01284170
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DOI: https://doi.org/10.1007/BF01284170