Abstract
XRD patterns indicate that the glasses xSb2O3⋅(40 − x)PbO⋅60B2O3⋅0.5CuO and xSb2O3⋅40PbO⋅(60 − x)B2O3⋅0.5CuO have amorphous structure for 0 ≤ x ≤ 40 mol%. The fraction (N4) of four coordinated boron atoms of both series decreases with increasing Sb2O3 content. The density decreases in the first series, whereas it increases in the second one. The contribution to N4 from PbO and Sb2O3 in each series could be separated. Sb2O3 contributes negatively to N4 in the second series, which is attributed to association of Sb2O3 and PbO forming Pb2Sb2O7 phase. Calculated densities agree well with the experimental data of the first series. Calculated densities could be obtained from the concentration of various structural units in glasses, as predicted from N4 data. Glasses in the second series have strong tendency to crystallization when heat treated. This tendency is not observed in the first series. These effects are explained by considering the abundance of B2O3 in glass.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
