Glasses in the system BaO-SrO-ZnO-SiO₂ from which a phase with the composition Ba_1-xSr_xZn₂Si₂O₇ can be precipitated possess a strong tendency towards surface crystallization and due to the high anisotropy of the coefficient of thermal expansion of this crystal phase, the obtained glass-ceramics often show micro cracking. The present article deals with the effect of P₂O₅ on the crystallization behavior of BaO-SrO-ZnO-SiO₂ glasses. The phase formation and the microstructure of the glass-ceramics are studied using thermal analyses, X-ray diffraction, optical microscopy, as well as scanning electron microscopy. While the stoichiometric glass melt spontaneously crystallizes upon cooling, the P₂O₅ addition leads to a stabilization of the glass enabling the preparation of a glass without any crystals. The appearance of stresses and micro cracks during crystallization can be assigned to certain crystallographic directions using electron backscatter diffraction. Moreover, it is possible to achieve volume crystallization in this otherwise solely surface crystallizing glass system.

可以析出组成Ba _1-x Sr _x Zn ₂ Si ₂ O ₇的相的BaO-SrO-ZnO-SiO ₂系统中的玻璃具有很强的表面结晶倾向，并且由于该系数的各向异性大在此晶相的热膨胀的基础上，所得的玻璃陶瓷经常显示出微裂纹。本文探讨了P ₂ O ₅对BaO-SrO-ZnO-SiO ₂结晶行为的影响眼镜。使用热分析，X射线衍射，光学显微镜以及扫描电子显微镜研究了玻璃陶瓷的相形成和微观结构。当化学计量的玻璃熔体在冷却时自发结晶时，P ₂ O _5的添加导致玻璃的稳定化，从而能够制备没有任何晶体的玻璃。结晶过程中的应力和微裂纹的出现可以通过电子背散射衍射确定为某些结晶学方向。此外，有可能在该原本仅表面结晶的玻璃体系中实现体积结晶。