Research ArticleOpen AccessGoogle Scholar indexed
Nanoindentation Study on Tourmaline
Department of Materials Science and Engineering,Obafemi Awolowo University, Ile-Ife. Nigeria.
National Agency for Science & Engineering Infrastructure, Abuja. Nigeria.
- 1 Department of Materials Science and Engineering,Obafemi Awolowo University, Ile-Ife. Nigeria.
- 2 National Agency for Science & Engineering Infrastructure, Abuja. Nigeria.
Journal of Minerals and Materials Characterization and Engineering·Volume 05 (2006)·Pages 63–72·Published 12 June 2006·DOI10.4236/jmmce.2006.51004
Copy link · social · email
Abstract
Nanoindentation tests were performed on the basal (0001) and prismatic (10ī0) surfaces of tourmaline crystals. These results were used along with Vickers microhardness tests to investigate the hardness of the material on these surfaces at different load regimes. It was found that the (0001) surface indicated a higher hardness at ultra-low loads while (10ī0) becomes the harder plane at higher loads. Evidence of plastic deformation at room temperature in the otherwise very brittle (ceramic) material was also established, and the elastic modulus was determined.
KeywordsTourmalineMineralsMechanical propertiesHardness testingNanoindentation
- Doerner, M. F. and Nix, W. D., J. Mater. Res., 1 (1986) 601.
- Oliver, W. C. and Pharr, G. M., J. Mater. Res., 7 (1992) 1564.
- Page, T. F., Oliver, W. C. and McHargue, C. J., J. Mater. Res., 7 (1992) 450.
- Hainsworth, S. V., Ph. D. Thesis: Factors influencing the tribology of ceramic surfaces. (University of Newcastle, England. 1993).
- Hainsworth, S. V. and Page, T. F., J. Mater. Sci., 29 (1994) 5529.
- Field, J. S. and Swain, M. V., J. Mater. Res., 10 (1995) 101.
- Atkinson, M., J. Mater Sci., 30 (1995) 1728.
- Hainsworth, S. V., Bartlett, T. and Page, T. F., Thin Solid Films, 236 (1993) 214.
- Page, T. F. and Hainsworth, S. V., Surf. and Coat. Tech., 61 (1990) 201.
- Hainsworth, S. V. and Page, T. F., Surf. and Coat. Tech., 68/69 (1994) 571.
- Hay, J. L. and Pharr, G. M., in Mechanical Testing And Evaluation, eds. H. Kuhn and D. Medlin, (ASM International, 2000) pp. 232-243.
- Henry, D. J. and Guidotti, C. V., Am. Mineralogist, 70 (1985) 1.
- Deer, W. A., Howie, R. A. and Zussman, J., Rock-Forming Minerals Vol. 1B: Disilicates and Ring Silicates. 2nd edition. (Longman Group Ltd., London 1986).
- Deer, W. A., Howie, R. A. and Zussman, J., An Introduction to the Rock-Forming Minerals, (Longman Scientific and Technical, England. 1992).
- Klein, C. and Hurlburt jr., C. S., Manual of Mineralogy, (New York, John Wiley and Sons, Inc., 1993) Chapters 2 and 3.
- Phillips, F. C., An Introduction to Crystallography, (English Language Book Society and Longman Group Limited, 1971).
- Dietrich, R. V., The Tourmaline Group, (New York, Van Nostrand Reinhold Company, Inc., 1985)
- Adeoye, M. O., Ph.D. Thesis: Flow and Fracture in Tourmaline and Beryl Using Indentation Techniques, (Obafemi Awolowo University, Ile-Ife. Nigeria, 1998).
- Marshall, D. B., Lawn, B. R. and Evans, A. G., J. Am. Ceram. Soc. 65, (1982) 561.