Journal of Materials Science

, Volume 29, Issue 21, pp 5641–5645 | Cite as

Knoop microhardness of single crystal sulphur

  • Hong Li
  • Young H. Han
  • R. C. Bradt


The Knoop microhardness of single crystal sulphur was measured as a function of crystallographic orientation and applied test load on the (110) and (111) planes. Microhardnesses were determined to be in the range of 25–35 kg mm−2. Anisotropy of the microhardness and a normal indentation size effect (ISE) were observed. The ISE was addressed by the application of the traditional power law and the proportional specimen resistance model (PSR) of Li and Bradt. The load-independent hardness was determined, from which it was concluded that the (111) plane is harder than the (110) plane and also that the (111) plane is more anisotropic in microhardness.


Polymer Sulphur Anisotropy Material Processing Crystallographic Orientation 
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 & Hall 1994

Authors and Affiliations

  • Hong Li
    • 1
  • Young H. Han
    • 2
  • R. C. Bradt
    • 2
  1. 1.Materials Engineering DepartmentRensselaer Polytechnic InstituteTroyUSA
  2. 2.Department of Chemical and Metallurgical Engineering, Mackay School of MinesUniversity of Nevada-RenoRenoUSA

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