| P_2O_5影响Na_2O-B_2O_3-SiO_2系玻璃结构与性质的特殊性 |
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| 引用本文： | 张超武,叶瑞伦. P_2O_5影响Na_2O-B_2O_3-SiO_2系玻璃结构与性质的特殊性[J]. 硅酸盐学报, 1991, 0(2) |
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| 作者姓名： | 张超武 叶瑞伦 |
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| 作者单位： | 齐齐哈尔轻工学院(张超武)，武汉工业大学(叶瑞伦) |
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| 摘 要： | 本文通过不混溶温度的确定,分相玻璃沥滤速率的测定以及NMR定量分析,研究了P_2O_6对Na_2O-B_2O_3-SiO_2系统玻璃结构和沥滤性质的影响。结果表明,P_2O_5在很大程度上促进钠硼硅分相玻璃的沥滤并非压抑“硼反常”所致,而是由以下三种因素综合作用的结果:(1)P_2O_5促进了钠硼硅玻璃的分相,使连通富硅相骨架尺寸增大;(2)P_2O_5的加入使富硅相骨架间隙中沉积的SiO_2量减少,减小了可溶相扩散阻力;(3)P_2O_5也使可溶相的溶解速率加快。
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| 关 键 词： | 钠硼硅玻璃 分相 沥滤 溶解 扩散 |
SPECIAL EFFECTS OF P_2O_5 ON STRUCTURE AND PROPERTY OF Na_2O-B_2O_3-SiO_2 GLASSES |
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| Zhang Chaowu. SPECIAL EFFECTS OF P_2O_5 ON STRUCTURE AND PROPERTY OF Na_2O-B_2O_3-SiO_2 GLASSES[J]. Journal of The Chinese Ceramic Society, 1991, 0(2) |
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| Authors: | Zhang Chaowu |
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| Affiliation: | Zhang Chaowu(Qiqihaer Institute of Light Industry) Ye Ruilun(Wuhan University of Technology) |
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| Abstract: | The effects of P_2O_5 on structure and leaching property of sodium borosilicate glas-ses have been studied in this paper by the examination of immiscibility temperature, the determination of leaching rate of phase-separated glasses and the quantitative NMR analysis. The results showed that the large promotion of leaching of phase-separa-ted sodium borosilicate glass is not due to the suppression of boron anomaly but due to three following effects:(1)P_2O_5 enhances the phase separation of base glasses and increases the size of interconnecting framework of silica-rich phase; (2)the addition of P_3O_5 reduces the amount of SiO_3 deposited in the cavity of silica-rich phase skeleton and decreases the diffusion barrier;(3)the dissolution rate of the soluble sodium borate phase increases with the addition of a small amount of P_2O_5. |
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| Keywords: | sodium borosilicate glass phase separation leaching dissolution diffusion |
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