Summary
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1.
Self-bound silicon carbide made from silicon carbide powder and carbon black is a practically nonporous material having high thermal-fatigue resistance and electrical conductivity.
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2.
Dense self-bound silicon carbide has unchanging physical and technical properties, which secure a high reproducibility of electrical resistivity and thermo-emf for different batches, as a result of which it is possible to evolve thermocouples of high thermo-emf sensitivity and stability for measuring the temperature of oxidizing environments at up to 1800°C.
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3.
Because of their excellent resistance to attack by molten metals and slags and exceptionally high thermal fatigue resistance, protection tubes from self-bound silicon carbide are greatly superior to all the types in current use.
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Kislyi, P.S., Kuzenkova, M.A. Protection tubes and high-temperature thermocouples with silicon-carbide thermoelectrodes. Powder Metall Met Ceram 4, 903–905 (1965). https://doi.org/10.1007/BF00773694
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DOI: https://doi.org/10.1007/BF00773694