Abstract
A technique is proposed for determining the pore-size distribution based on measuring the dependence of total reflectance in the domain of partial transparency of a material. An assumption about equality of scattering-coefficient spectra determined by solving the inverse radiation transfer problem and by theoretical calculation with the Mie theory is used. The technique is applied to studying a quartz ceramics. The poresize distribution is also determined using mercury and gas porosimetry. All three methods are shown to produce close results for pores with diameters of <180 nm, which occupy ~90% of the void volume. In the domain of pore dimensions of >180 nm, the methods show differences that might be related to both specific procedural features and the structural properties of ceramics. The spectral-scattering method has a number of advantages over traditional porosimetry, and it can be viewed as a routine industrial technique.
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Original Russian Text © R.A. Mironov, M.O. Zabezhailov, I.F. Georgiu, V.V. Cherepanov, M.Yu. Rusin, 2018, published in Optika i Spektroskopiya, 2018, Vol. 124, No. 3, pp. 295–302.
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Mironov, R.A., Zabezhailov, M.O., Georgiu, I.F. et al. Determining the Size of Pores in a Partially Transparent Ceramics from Total-Reflection Spectra. Opt. Spectrosc. 124, 289–297 (2018). https://doi.org/10.1134/S0030400X18030189
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DOI: https://doi.org/10.1134/S0030400X18030189