<i>In-Situ</i> Raman Measurements of Silicate Glasses during Vickers Indentation

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Author(s)

Abstract

<p><i>In-situ</i> structural changes of glass under a sharp diamond indenter are evaluated by using a micro-Raman spectrophotometer coupled with a self-made indentation equipment. This set-up enables us to obtain <i>in-situ</i> Raman spectra of glass under a Vickers indenter and to observe transient and permanent structural changes in glass. It is found that <i>in-situ</i> Raman spectra of silica glass under the Vickers indenter show distinct peak-broadening, which is not observed in the <i>in-situ</i> Raman spectra of hydrostatically compressed silica glass, nor in those of soda-lime silicate glass. This suggests that the indentation-induced shear stress causes the glass structure to be deformed into a different one with a wider bond angle distribution. Such a shear-induced structural change could play a key role on the contact damage of glass, especially for glass with a high degree of polymerization, like silica glass.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 60(8), 1428-1432, 2019

    The Japan Institute of Metals and Materials

Codes

  • NII Article ID (NAID)
    130007683562
  • NII NACSIS-CAT ID (NCID)
    AA1151294X
  • Text Lang
    ENG
  • ISSN
    1345-9678
  • NDL Article ID
    029819152
  • NDL Call No.
    Z53-J286
  • Data Source
    NDL  J-STAGE 
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