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Standard measures of thermal expansion made of monocrystalline aluminum oxide for a broad range of temperatures

  • Thermal Measurements
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Measurement Techniques Aims and scope

Abstract

Standard measures of linear thermal expansion made of monocrystalline aluminum oxide have been developed. The measures have a 59° orientation relative to the trigonal axis of the crystalline lattice. The raw material for making the measures is obtained by the Stepanov's method of growing shaped monocrystalline semifinished products with a highly accurate crystallographic orientation from a melt. The parameters of the measures are optimized for testing high-temperature relative dilatometers with transducers made of polycrystalline corundum. The coefficient of linear expansion of the new measures was checked in the range 90–1800 K and exact values of the coefficient were obtained for a broad range of temperatures.

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Authors
  1. T. A. Kompan
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  2. A. S. Korenev
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  3. A. Ya. Lukin
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  4. P. I. Antonov
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  5. V. M. Krymov
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  6. A. V. Moskalev
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Additional information

Translated from Izneritel'naya Tekhnika, No. 8, pp. 38–42, August, 1999.

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Kompan, T.A., Korenev, A.S., Lukin, A.Y. et al. Standard measures of thermal expansion made of monocrystalline aluminum oxide for a broad range of temperatures. Meas Tech 42, 776–781 (1999). https://doi.org/10.1007/BF02504359

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  • DOI: https://doi.org/10.1007/BF02504359

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