超低热膨胀材料研究进展

Recent Progress of Very Low Thermal Expansion Coefficient Materials

综述了近20年有关负膨胀系数化合物及其收缩机理的报道；重点介绍了超低热膨胀材料的新进展和各向同性的热收缩化合物及晶体的结构配位多面体的热转动收缩模型。

The paper summarized the negative thermal expansion coefficient compounds and their contraction mechanism reported in recent 20 years. The focal point is on the recent progress of the very low thermal expansion coefficient materials and isotropic heat contraction compounds as well as the contraction model which was described to be the coupled rotation of the essentially rigid polyhedral bullding blocks of the structure.