关键词: 玻璃形成;化学键;卤化物;硫系玻璃

Abstract: The nature of chemical bond of halide and chalcogenide glasses was discussed in terms of the che-mical bond approach. All the glass components can be divided into three groups：hard glass components,such as fluorides;soft glass components,such as bromides,iodides,chalcogenides;and borderline glass components,such as chlorides.The cations with high positive charge and small ionic radii are suitable to forming hard glasses,and those with low oxidation state and large radii are suitable to forming soft glasses.The different donor-acceptor bonds for hard glass components and for soft glasses are the reason that the two glass components have different mechanisms of polymerization. The balance between the chemical bonding force of inter-cluster and the thermal energy(temperature)was also discussed. Some new chalcohalid glasses were prepared according to this principle.