Network Structure and Chemical Durability of Non-alkali Aluminoborosilicate Glasses Containing ZnO
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第2期
论文作者：杜睿 HAN Jianjun CAO Xin LIU Chao 王静
文章页码：377 - 383
摘 要：The structure and chemical durability of non-alkali aluminoborosilicate glasses with various contents of ZnO were investigated.As the replacement of MgO by ZnO increases from 0 to 3.2mol%,the average number of bridge oxygen per tetrahedron （BO/T） as a measure of network connectivity increases from 2.84 to 3.04,and the chemical durability improved.The weight loss ratio （WLR） of glass etched in 10vol% HF （20 ℃,20 min） solution decreased from 4.809 to 4.509,and in 5wt% NaOH （95 ℃,6 h） solution decreased from 1.201 to 0.994.The replacement of MgO by ZnO further increased to 6.4mol%,the value of BO/T decreased to 3.04 instead,and thus the chemical durability deteriorated.The WLR of HF-acid and NaOH-alkali corrosion increased to 6.683 and 1.994,respectively.The chemical durability shows strongly dependent on the network connectivity and exhibits mixed intermediate effects during the replacement of MgO by ZnO.
杜睿1，HAN Jianjun1，CAO Xin2，LIU Chao1，王静1
1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology2. State Key Laboratory of Advanced Technology for Float Glass, (CNBM) Bengbu Design & Research Institute for Glass Industry Co.Ltd.
摘 要：The structure and chemical durability of non-alkali aluminoborosilicate glasses with various contents of ZnO were investigated.As the replacement of MgO by ZnO increases from 0 to 3.2mol%,the average number of bridge oxygen per tetrahedron （BO/T） as a measure of network connectivity increases from 2.84 to 3.04,and the chemical durability improved.The weight loss ratio （WLR） of glass etched in 10vol% HF （20 ℃,20 min） solution decreased from 4.809 to 4.509,and in 5wt% NaOH （95 ℃,6 h） solution decreased from 1.201 to 0.994.The replacement of MgO by ZnO further increased to 6.4mol%,the value of BO/T decreased to 3.04 instead,and thus the chemical durability deteriorated.The WLR of HF-acid and NaOH-alkali corrosion increased to 6.683 and 1.994,respectively.The chemical durability shows strongly dependent on the network connectivity and exhibits mixed intermediate effects during the replacement of MgO by ZnO.
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