Refractories and Industrial Ceramics

, Volume 48, Issue 4, pp 274–279 | Cite as

Polar anisotropy of microhardness for refractory boride single crystals of different syngony

  • V. N. Gurin
  • L. I. Derkachenko
  • A. I. Shelykh


Anisotropy of Knoop microhardness is measured in different directions within the limits 0–90 and 0–180° with a step in the azimuth of 22.5° in different identified faces of single crystals belonging to different crystallographic syngony of refractory borides, some of which are used as antioxidants in the production of carbon-containing refractories. Single crystals are prepared from Al solution-melts with slow cooling of the system from 1200–1400 to 20°C. Experimental data for polar anisotropy of microhardness with a step in azimuth indicated are obtained for the first time and their qualitative interpretation is provided.


Azimuth Boride Refractory Compound Titanium Diboride Polar Anisotropy 


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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • V. N. Gurin
    • 1
  • L. I. Derkachenko
    • 1
  • A. I. Shelykh
    • 1
  1. 1.A. F. Ioffe Physical Engineering InstituteRussian Academy of SciencesRussia

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