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Journal of Materials Science

, Volume 26, Issue 4, pp 899–903 | Cite as

Microindentation studies on BaFCl single crystals

  • J. Guille
  • M. Sieskind
Papers

Abstract

The mechanical behaviour of BaFCI single crystals has been investigated by use of Vickers microindentation. The tests performed on (0 0 1) and (1 0 0) planes show an important hardness anisotropy, higher values being obtained on (1 0 0) planes and all being close to that of BaF2. A qualitative investigation of the impressions has established the occurrence of cleavage along {1 0 0} planes, whereas slip occurs much more easily along (0 0 1) planes. For tests performed on the (0 0 1) plane, a quantitative analysis of the indentation cracks yields a very low toughness value. On comparing the BaFCl and BaF2 structures, it is concluded that the chlorine layers introduce a marked anisotropy but do not have the expected weakening effect.

Keywords

Polymer Anisotropy Chlorine Quantitative Analysis Mechanical Behaviour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • J. Guille
    • 1
  • M. Sieskind
    • 2
  1. 1.IPCMS-GMI, EHICSStrasbourg CedexFrance
  2. 2.Laboratoire PHASEStrasbourg CedexFrance

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