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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 behavior of ZnO-P2O5 glasses in water
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Dissolution behavior of ZnO-P2O5 glasses in water

机译：ZnO-P2O5玻璃在水中的溶解行为

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Bulk binary ZnO-P2O5 glasses with 50-70 mol% ZnO were immersed in distilled water at 30-90 degrees C for up to 72 h. The immersed samples were characterized by weight loss, the change in solution pH, X-ray diffraction (XRD) analysis, scanning electron microscopy and Raman spectroscopy. Weight loss decreased with ZnO concentration for all immersion temperatures. Dissolution behavior was classified into two types in terms of weight loss and macroscopic appearance. Type I was primarily recognized in 50-60 mol% ZnO glasses. In type I, the weight loss for 72 h was relatively large (> 1.0 x 10(-7) kg mm(-2), > 10% of initial sample weight). Raman spectra of the type I glasses indicated that the depolymerization of phosphate glass network occurred during the dissolution process. Crystalline Zn2P2O7-3H(2)O was precipitated in the water solution after immersion. Type II dissolution behavior was recognized in the 65 and 70 mol% ZnO glasses except for the 65ZnO-35P(2)O(5) glass immersed at 90 degrees C. In the type II behavior, the weight loss for 72 h was relatively-small (< 1.0 x 10(-8) kg mm(-2), < 1% of initial sample weight). The microstructure of the type II glass indicated selective dissolution. The dissolution process of the type II glass is discussed. (c) 2006 Elsevier B.V. All rights reserved.
机译：将具有50-70 mol％ZnO的块状ZnO-P2O5二元玻璃浸入30-90摄氏度的蒸馏水中达72小时。浸没样品的特征在于重量减轻，溶液pH值变化，X射线衍射（XRD）分析，扫描电子显微镜和拉曼光谱。在所有浸入温度下，重量损失均随ZnO浓度的降低而降低。根据体重减轻和宏观外观，溶解行为分为两种类型。在50-60 mol％ZnO玻璃中主要识别出I型。在I型中，72小时的重量损失相对较大（> 1.0 x 10（-7）kg mm（-2），>初始样品重量的10％）。 I型玻璃的拉曼光谱表明，在溶解过程中发生了磷酸盐玻璃网络的解聚。浸泡后，结晶Zn2P2O7-3H（2）O沉淀在水溶液中。在65和70 mol％的ZnO玻璃中可以识别II型溶解行为，但将65ZnO-35P（2）O（5）玻璃浸在90摄氏度下除外。在II型行为中，72小时的失重相对而言-小（<1.0 x 10（-8）kg mm（-2），<初始样品重量的1％）。 II型玻璃的微观结构表明选择性溶解。讨论了II型玻璃的溶解过程。 （c）2006 Elsevier B.V.保留所有权利。

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