Nanoindentation of glass wool fibers

Effect of thermal history and chemical composition on hardness of silicate glasses

“…As there is an inverse relationship between T f and t a , H v is found to decrease with increasing T f . The trend is confirmed by nanoindentation measurements on hyperquenched E-glass fibers [24]. Compared to the glasses studied in this work, the E-glass fibers have significantly higher T f values (i.e., 1166 K) and considerably lower hardness ($6.6 GPa) at a load of 0.3-1.2 mN.…”

Composition–structure–property relationships in boroaluminosilicate glasses

“…The analyzed compositions are reported in Table 1. The iron redox state in the iron-containing glasses was determined by 57 Fe Mössbauer spectroscopy with uncertainty of ±5% [30]. The densities were determined using Archimedes principle.…”

“…Table 1 Chemical composition, homogenization temperature (T h ), iron redox ratio ([Fe 3+ ]/ [Fe] tot ), and fraction of tetrahedral to total boron (N 4 ) of the investigated iron-free and iron-containing glasses. Iron redox ratio was determined by 57 Fe Mössbauer spectroscopy with uncertainty of ± 5% [30]. N 4 was determined by 11 B MAS NMR spectroscopy with uncertainties of ± 0.2% [28].…”

“…In the peraluminous regime, Table 2 Glass transition temperature determined from viscosity (T g,vis ) and DSC measurements (T g,DSC ), liquid fragility index from viscosity (m), jump in isobaric heat capacity during glass transition (ΔC p ), slope of the heat capacity curve during glass transition ((dC p /dT) inflect ), glass transition width (ΔT g ), density (ρ), molar volume (V m ), Young's modulus (E), and shear modulus (G) of the investigated glasses. 57 Fe Mössbauer spectroscopy. The uncertainty of this method is about ± 5%.…”

Nanomechanical properties inside the scratch grooves of soda–lime–silica glass

“…High-precision machining of glass for such advanced applications is a very challenging research area and hence simulated by nanoindentation as well as single-and multiple-pass scratch testing of various glasses . The nanoindentation technique has been extensively used for determination of nanohardness (H ) and Young's modulus (E) of various glasses including soda-lime-silica (SLS) glass [1][2][3][4][5][6][7]. The nanohardness of copper phosphate glass is sensitive to the Cu + /Cu 2+ ratio [8].…”