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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 >First investigations of the influence of IVB elements (Ti, Zr, and Hf) on the chemical durability of soda-lime borosilicate glasses
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First investigations of the influence of IVB elements (Ti, Zr, and Hf) on the chemical durability of soda-lime borosilicate glasses

机译：首次研究IVB元素（Ti，Zr和Hf）对钠钙硼硅酸盐玻璃化学耐久性的影响

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摘要

The influence of IVB elements (Zr, Ti, and Hf) on the glass structure and on the alteration kinetics of soda-lime borosilicate glasses has been studied at various stages of glass leaching corresponding to the initial dissolution rate, rate drop, and residual rate regimes. The effect of these elements on the limiting mechanisms of the glass durability as well as the chemistry of both solution and alteration layer are inter-related, depending on the reaction progress. The effect of IVB elements on the glass structure was investigated using ~(11)B MAS NMR. The IVB elements are compensated primarily by Na rather than Ca, at the expense of tetracoordinated boron. The addition of HfO_2 or ZrO_2 decreases the initial dissolution rate in a similar way. Moreover, adding ZrO_2 limits the rate drop in saturated media. The initial dissolution rate decrease is less significant when Ti is added, and a quick drop of the dissolution rate is observed up to 4 mol% TiO_2. At low IVB element concentration, glasses containing Ti and Zr show different residual rates arising from the precipitation of magadiite (Na_2Si_(14)O_(29)?11H_2O), at the surface of Ti-bearing glasses. The influence of IVB elements on glass alteration indicates that, unlike Ti, Zr and Hf plays a similar role in the structure of borosilicate glasses.
机译：研究了IVB元素（Zr，Ti和Hf）对玻璃结构以及钠钙硼硅酸盐玻璃的变化动力学的影响，这些变化在玻璃浸出的各个阶段，分别对应于初始溶解速率，速率下降和残留速率。政权。这些元素对玻璃耐久性的限制机制的影响以及溶液和蚀变层的化学作用是相互关联的，具体取决于反应进程。使用〜（11）B MAS NMR研究了IVB元素对玻璃结构的影响。 IVB元素主要由Na而不是Ca补偿，以四配位硼为代价。 HfO_2或ZrO_2的添加以类似的方式降低了初始溶解速率。此外，添加ZrO_2限制了饱和介质中的速率下降。当添加Ti时，初始溶解速率的降低不太明显，并且观察到溶解速率的快速下降，直至4 mol％TiO_2。在低IVB元素浓度下，含Ti和Zr的玻璃在含Ti的玻璃表面显示出不同的残留率，这是由Magadiite（Na_2Si_（14）O_（29）？11H_2O）的析出引起的。 IVB元素对玻璃蚀变的影响表明，与Ti不同，Zr和Hf在硼硅酸盐玻璃的结构中起着相似的作用。

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