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本文从实验及文献数据讨论了硼酸盐、磷酸盐及硅酸盐二元系统及三元系统玻璃形成区与组分间的关系。 各类不同氧化物按其玻璃形成性质,可分为6种类型。即玻璃生成体Nf、中间体NI和网络外体的碱金属氧化物NM1、碱土金属氧化物NM2、惰性电子对金属氧化物NM3(例如PbO、Bi_2O3等)和高价氧化物NM4。通过这种分类,使我们可以描述出各种未知的三元系统玻璃形成区形状。 本文还讨论了玻璃最稳定区域。通常认为最稳定区处在偏酸盐(如偏硅酸盐等)化合物处,但实验结果却是处在这些偏酸盐化合物附近共熔体区。利用热力学理论可推测出共熔区位置以及加入第三组分对分相的影响。 本文还提出了一些改进新品种玻璃析晶性能的建议。
Abstract：Basing on our experiments and some literature data, the relation between regions ofglass formation and oxide compositions of two or three component systems of borate, sili-cate and phosphate are discussed. Different oxides have different characteristics of glass formation.They may be classifi-ed into six types, i.e., the glass forming body NF, the intermediate body NI, and the net-work modifiers which include alkali oxide NM1, alkali earth oxide NM2, inert electronpair metal oxide NM3(such as PbO,Bi_2O_3etc.),and polyvalent oxide NM4. Such classificationmakes it possible to describe the contour of the glass formation regions of various unknownternary systems. Contrary to the traditional concept, the most stable region of glass isnot in the meta-acid compounds, but in the eutectics formed near these compounds. Bymeans of thermodynamic theory, the locations of these eutectic points and the effect ofphase separation by introducing the third component can be predicted. Some proposals to improve the devitrification characteristics of new type optical glassesare presented.
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基本信息:
引用信息:
[1]姜中宏.关于玻璃形成区及玻璃失透性能的一些问题[J].硅酸盐学报,1981(03):323-339.
1981-06-30
1981-06-30