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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
Papers

Abstract

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.

Keywords

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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References

  1. 1.
    E. MEYER, Phys. Z. 9 (1908) 66.Google Scholar
  2. 2.
    E. O. BERNHARDT, Z. Metallkde 13 (1941) 135.Google Scholar
  3. 3.
    D. R. TATE, Trans. ASM 35 (1945) 374.Google Scholar
  4. 4.
    S. A. VARCHENYA, F. O. MUKTEPAVEL and G.P. UPIT, Soviet Phys. Solid State 11 (1970) 2300.Google Scholar
  5. 5.
    C. HAY and E. G. KENDALL, Metall. 6 (1973) 275.CrossRefGoogle Scholar
  6. 6.
    F. FROHLICH, P. GRAU and W. GRELLMANN, Phys. Status Solidi 42 (1977) 79.CrossRefGoogle Scholar
  7. 7.
    P. M. SARGENT and T. F. PAGE, Proc. Br. Ceram. Soc. 26 (1978) 209.Google Scholar
  8. 8.
    P. M. SARGENT, in “Microindentation Techniques in Materials Science and Engineering”, edited by P. J. Blau and B. R. Lawn, ASTM STP 889 (American Society for Testing Materials, Philadelphia, PA, 1984) p. 160.Google Scholar
  9. 9.
    G. H. FRISCHAT, in “Strength of Inorganic Glass”, edited by C. R. Kurkjian (Plenum, New York, 1985) p. 135.Google Scholar
  10. 10.
    K. HIRAO and M. TOMOZAWA, J. Amer. Ceram. Soc. 70 (1987) 497.CrossRefGoogle Scholar
  11. 11.
    S. J. BULL, T. F. PAGE and E. H. YOFFE, Phil. Mag. Lett. 59 (1989) 281.CrossRefGoogle Scholar
  12. 12.
    H. LI and R. C. BRADT, J. Mater. Sci. 28 (1993) 917.CrossRefGoogle Scholar
  13. 13.
    Idem, J. Hard Mater. 3 (1992) 403.Google Scholar
  14. 14.
    Idem, J. Non-Cryst. Solids 146 (1992) 197.CrossRefGoogle Scholar
  15. 15.
    H. LI, A. GHOSH, Y. H. HAN and R. C. BRADT, J. Mater. Res. 8 (1993) 1028.CrossRefGoogle Scholar
  16. 16.
    H. LI and R. C. BRADT, J. Diamond & Related Mater. 1 (1992) 1161.CrossRefGoogle Scholar
  17. 17.
    P. Feltham and R. BANERJEE, J. Mater. Sci. 9 (1974) 1478.CrossRefGoogle Scholar
  18. 18.
    Idem, ibid., 27 (1992) 1626.CrossRefGoogle Scholar
  19. 19.
    B. I. SREBRODOLSKI and N. R. YUSHKIN, in “Constitution and Properties of Minerals” 2(IV) (Ukraine Academy of Sciences, Mineralogical Branch, Kiev, 1966) p. 35.Google Scholar
  20. 20.
    D. ARIVUOLI, F. D. GNANAM and P. RAMASAMY, J. Mater. Sci. Lett. 7 (1988) 711.CrossRefGoogle Scholar
  21. 21.
    “Dana's System of Mineralogy”, Vol 1, 7th Edn, edited by C. Palache, H. Berman and C. Frondel (Wiley, New York, 1966) p. 139.Google Scholar
  22. 22.
    “Powder Diffraction File” Sets 6–10 (revised), Inorganic Vol. No. PD1S-10iRD (Joint Council Powder Diffraction Studies, Philadelphia PA, 1967) 8–247.Google Scholar
  23. 23.
    C. A. BROOKES, J. B. O'NEILL and B. A. W. REDFERN, Proc. Roy. Soc. Lond. A322 (1971) 73.CrossRefGoogle Scholar
  24. 24.
    H. LI and R. C. BRADT, J. Amer. Ceram. Soc. 73 (1990) 1360.CrossRefGoogle Scholar
  25. 25.
    Idem, ibid., 74 (1991) 1053.CrossRefGoogle Scholar
  26. 26.
    H. LI, H. SUEMATSU, T. ISEKI and R. C. BRADT, Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi 99 (1991) 1079.CrossRefGoogle Scholar
  27. 27.
    H. LI and R. C. BRADT, Mater. Sci. Engng A142 (1991) 51.CrossRefGoogle Scholar

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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