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Surface effects on Young’s modulus and hardness of fused silica by nanoindentation study

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Abstract

The surface Young’s modulus (E) and hardness (H) of fused silica samples have been studied by nanoindentation. Two factors strongly affect the results of E and H. One factor is the polishing quality of the fused silica surface. Poor polishing quality produces much smaller E and H than the literature values for bulk fused silica. The second factor is surface flatness. Even for a well-polished silica surface, an “arch bridge effect” may hinder the measurements of the true values of E and H. A correction procedure is proposed to eliminate this effect, and the corrected results show substantial improvements.

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Acknowledgments

This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC03-92SF19460, the University of Rochester, and the New York State Energy Research and Development Authority. The support of DOE does not constitute an endorsement by DOE of the views expressed in this article. One of the authors (L.Z.) gratefully acknowledges C. Pratt for help with nanoindentation tests and the Laboratory for Laser Energetics for a Horton Fellowship.

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Author notes

  1. Lianqing Zheng

    Present address: Department of Chemistry, University of Missouri-Columbia, Columbia, MO, 65211, USA

Authors and Affiliations

  1. Department of Mechanical Engineering and Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, NY, 14623-1299, USA

    Lianqing Zheng & John C. Lambropoulos

  2. Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, NY, 14623-1299, USA

    Ansgar W. Schmid

Authors
  1. Lianqing Zheng
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  2. Ansgar W. Schmid
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  3. John C. Lambropoulos
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Correspondence to John C. Lambropoulos.

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Zheng, L., Schmid, A.W. & Lambropoulos, J.C. Surface effects on Young’s modulus and hardness of fused silica by nanoindentation study. J Mater Sci 42, 191–198 (2007). https://doi.org/10.1007/s10853-006-1051-2

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  • DOI: https://doi.org/10.1007/s10853-006-1051-2

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