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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Dissolution retardation of solid silica during glass-batch melting
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Dissolution retardation of solid silica during glass-batch melting

机译：批料熔融过程中固体二氧化硅的溶解延迟

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摘要

During glass-batch melting, solid silica (quartz) usually dissolves last. The measured rate of dissolution, while the temperature was increasing at a constant rate, was compared with the hypothetical diffusion-controlled volume flux from regularly distributed particles through concentration layers of a uniform thickness. The actual rate was up to two orders of magnitude lower than that of the "ideal" case, revealing a progressive inhibition of silica dissolution. As a measure of this retarded dissolution, we introduced a retardation factor defined as a ratio of the actual and "ideal" dissolution rates measured as the volume flux at the melt-particle interface. The severe inhibition of silica dissolution has been attributed to the irregular spatial distribution of silica particles that is associated with the formation of nearly saturated melt on a portion of their surfaces. Irregular shapes and unequal sizes of particles also contribute to their extended lifetime.
机译：在玻璃批料熔融过程中，固体二氧化硅（石英）通常最后溶解。当温度以恒定速率增加时，将测得的溶解速率与假设的扩散控制体积通量进行比较，该体积通量从规则分布的颗粒穿过均匀厚度的浓缩层。实际速率比“理想”情况下的速率低两个数量级，显示出二氧化硅溶解的逐步抑制。作为这种延迟溶解的量度，我们引入了延迟因子，该延迟因子定义为实际和“理想”溶解速率之比，该比率以熔体-颗粒界面处的体积通量测量。二氧化硅溶解的严重抑制归因于二氧化硅颗粒的不规则空间分布，这与在其部分表面上形成近乎饱和的熔体有关。不规则形状和不等大小的颗粒也有助于延长其使用寿命。

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