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Drying of inorganic gels to amorphous solids or how to avoid crystallization

机译：将无机凝胶干燥成无定形固体或如何避免结晶

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Sodium silicate solutions were applied as inorganic gel formers. The gels or solid materials were formed by simple drying, neutralization with boric acid or by mixing with sodium aluminate solutions. The resulting materials are chemically characterized by the systems Na_2O―SiO_2, Na_2O―B_2O_3―SiO_2, Na_2O―A1_2O_3―SiO_2. The starting compositions of the gels were varied via concentration and amount of starting materials. In each case water plays a significant role in the synthesis of the materials and for their structural development. The dried materials were examined by light microscopy, X-ray diffraction and thermal analysis in order to investigate the structure. The basic principles established to avoid crystallization are similar to experiences with glass formation from melts.
机译：将硅酸钠溶液用作无机凝胶形成剂。通过简单干燥，用硼酸中和或通过与铝酸钠溶液混合来形成凝胶或固体材料。所得材料通过Na_2O〜SiO_2，Na_2O〜B_2O_3〜SiO_2，Na_2O〜Al_2O_3〜SiO_2体系进行化学表征。凝胶的起始组成随起始物质的浓度和量而变化。在每种情况下，水在材料的合成及其结构发展中都起着重要作用。通过光学显微镜，X射线衍射和热分析检查干燥的材料，以研究其结构。为避免结晶而建立的基本原理类似于由熔体形成玻璃的经历。

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