Optical Analysis of Metal Oxide Borosilicate (xCaO(1-x-z) SiO2 zB2O3) glasses with varying concentrations of boric oxide (B2O3)

Glass sample compositions of xCaO(1-x-z)-SiO2 zB2O3 with constant nominal CaO x=33.33 mol% and varying concentrations B2O3 as z=50,60 66.67 are prepared by conventional melt quench technique. Fourier transform infrared (FTIR) spectra glass system has been measured in the spectral range 400–4000 cm−1 low-frequency region 1700cm-1 to 400cm-1 high-frequency 4000cm-1 1700cm-1) at room temperature understand characteristic frequencies chemical bonds, bonding mechanisms structure electron shell atoms, for purpose determine molecular composition. It is found that melting glasses decreases increase concentration 950oC-1100oC samples which consist 50, 60, B2O3. In (1700cm-1 400cm-1) high containing showed an increased number distinct peaks several broad Gaussian thigh-frequency 400cm-1). All based on line corrected deconvoluted appropriate Gaussians. were analyzed exact position relative amounts IR bands responsible different silicate borates units. The peak Gaussians assigned Si-O-Si, B-O-B, Si-O-Ca, Si-O etc. bonds previous scientific investigations. presence materials suggests B3+ occupies network linkage Si-O-B glasses. amorphous nature, surface topography composition was checked X-ray diffraction (XRD) scanning microscopy (SEM) techniques respectively optical inspection, did not show any evidence phase separation, all homogeneous.