Authors: Jiao Han Yuanming Lai Yao Xiang Shuang Wu Ying Xu Yiming Zeng Jialin Chen Jisong Liu
Publish Date: 2017/01/04
Volume: 28, Issue: 8, Pages: 6131-6137
Abstract
The aim of the present work is to investigate the effects of SiO2 content on the structure of CaO–B2O3–SiO2–Al2O3–ZnO glass using the MASNMR the fourier transform infrared spectrometer and differential scanning calorimetry DSC The results showed that the majority of Al existed in fourfold coordination and Zn acted as glass modifier in glass structure With the increasing of SiO2 content the relative amount of BIII units decreased while the BIV units increased and the proportion of Si–O–Si bridge oxygen bond in SiO4 tetrahedrons increased obviously The DSC curves revealed that the glass transition temperature increased from 732 to 773 °C with the increasing of SiO2 content indicating that SiO2 generating more bridge oxygen can increase the degree of polymerization of glass structureThe authors thank the National Center for Magnetic Resonance in Wuhan acquiring the MASNMR measurement This work was supported by the fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals Nos SKLSPM201535 201548 The 551 project of Kunming the Basic Applied Research Foundation of Yunnan Province China Grant Nos 2016FD125 2016FB083 and Science Technology Program of Yunnan Province No 2014DC019
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