Properties and structure of glasses in the system AsS
Properties and structure of glasses in the system AsS
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DOI：
10.1016/0022-3093(71)90069-x
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发表时间：
1971-03
影响因子：
3.5
通讯作者：
S. Tsuchihashi;Y. Kawamoto
中科院分区：
文献类型：
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作者：
S. Tsuchihashi;Y. Kawamoto
在获得玻璃的过程中，最初是用陶瓷坩埚将原料混合熔化，但在这种情况下，通过红外吸收法发现玻璃中含有一些氧杂质。然后在密封的真空管中按一定比例熔化纯元素As和S，制备了一系列玻璃。研究了不同组分玻璃样品的红外吸收、分子体积、分子折射率、硬度、热膨胀和粘度，并测定了这些玻璃在CS2中的溶解度。利用x射线衍射研究了AsS体系中玻璃的结构，并建立了结构模型。通过测量得出以下结论。As2S3玻璃的结构是一种扭曲形式的晶体或微粒结构。随着S含量在As2S3以上的增加，S可能以链状形式存在，但当S含量大于As2S8-10时，链状形式和环状形式并存。随着As2S3以下S含量的降低，As和As之间的S被消除，As形成As键。因此，层的变形和层间距的扩大被观察到。
In obtaining the glass, at first, the raw materials were mixed up and melted by using porcelain crucible, but in this case it was found by infra-red absorption method that the glass contains some oxygen impurities. Then a range of glasses was prepared by melting elementary pure As and S in definite proportions in a sealed vacuum tube. The infra-red absorption, molecular volume, molecular refraction, hardness, thermal expansion and viscosity of sample glasses with various compositions were investigated and, additionally, solubility of these glasses into CS2 was measured. The structure of glasses in the system As S was studied by X-ray diffraction and a structural model was set up. From the measurements the following conclusions were made. The structure of As2S3 glass is a distorted form of the crystalline orpiment structure. With increasing S content above As2S3, S is likely to exist in the chain-like form, but when the S content is greater than that in As2S8–10, both chain-like and ring type forms co-exist. With decreasing S content below As2S3, S between As and As is eliminated and As As bonds are formed. Consequently a deformation of layer occurs and an expansion of the layer distance was observed.