| Behaviour of Silicate Melts in Respect of Volume |
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| 作者姓名： | 张金民 叶大年 |
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| 作者单位： | InstituteofGeology,AcadmiaSinica,Beijing |
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| 摘 要： | The volumes per oxygen of some silicate melts have been calculated and then compared with those of silicate glasses.It is suggested that the volume of a silicate melt can be divided into two parts.One is contri buted by the silicon-oxygen network and the other by the “oxides”.Variation patterns of VPOs suggest that the volume of the Si-O network generally remains unchanged and the expansion of the melt is caused mainly by the locat expansion of the “oxides”.It is further proposed that the radius of O^2- shows little variation,in striking contrast to the radius of cations.The mechanism governing the expansion is discussed in detail.
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| 关 键 词： | 熔融硅酸盐 金属化合物 二氧化硅 玻璃 氧化物 硅－氧键 |
Behaviour of silicate melts in respect of volume |
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| Zhang Jinmin,Ye Danian.Behaviour of Silicate Melts in Respect of Volume[J].Chinese Journal of Geochemistry,1989,8(4):365-373. |
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| Authors: | Zhang Jinmin Ye Danian |
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| Institution: | (1) Institute of Geology, Academia Sinica, Beijing |
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| Abstract: | The volumes per oxygen of some silicate melts have been calculated and then compared with those of silicate glasses. It is
suggested that the volume of a silicate melt can be divided into two parts. One is contri buted by the silicon-oxygen network
and the other by the “oxides”. Variation patterns of VPOs suggest that the volume of the Si - O network generally remains
unchanged and the expansion of the melt is caused mainly by the local expansion of the “oxides”. It is further proposed that
the radius of O2- shows little variation, in striking contrast to the radius of cations. The mechanism governing the expansion is discussed
in detail.
Supported financially by National Natural Science Foundation of China. |
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