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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 >Effect of TiO2 on the chemical durability and optical properties of Mo-based phosphate glasses
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Effect of TiO2 on the chemical durability and optical properties of Mo-based phosphate glasses

机译：TiO2对Mo基磷脂化学耐久性和光学性质的影响

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摘要

The phosphate glasses belonging to the 20Li(2)O-(40-x)Li2MoO4-xTiO(2)-40P(2)O(5) (0 <= x <= 10 mol%) system were prepared via melt quenching route at 900 +/- 15 degrees C. The prepared samples are characterized by X Ray diffraction and differential scanning calorimetry to check possible crystalline residues and the glassy state. The structural properties of these glasses were investigated by some physical parameters such as density, molar volume, and glass transition temperature (T-g). Density values, molar volume values, and T-g values were found to depend strongly on the chemical composition of the glasses. The density decreased from 3.68 +/- 0.01 g/cm(3) to 3.27 +/- 0.01 g/cm(3), and Tg increased from 372 +/- 2 degrees C to 407 +/- 2.C with the TiO2 content increased from 0 mol% to 10 mol%. The structural approach is verified by Infrared (IR) and Raman spectroscopies. The chemical durability tests on the glasses have shown that the compositions containing pyrophosphate (Q(1)) and orthophosphate (Q(0)) units are more water resistant. The optical properties have been evaluated by determining some parameters, like optical band gap energy (E-g) and Urbach energy (Delta E) and their values are determinate. These parameters vary in opposite; E-g decreased from 2.12 eV to 1.35 eV and.. increased from 0.38 eV to 0.48 eV with increasing in TiO2 mol %.
机译：在900+/-15°C下，通过熔融淬火路线制备了属于20Li（2）O-（40-x）Li2MoO4 xTiO（2）-40P（2）O（5）（0<=x<=10 mol%）系统的磷酸盐玻璃。制备的样品通过x射线衍射和差示扫描量热法进行表征，以检查可能的结晶残留物和玻璃态。通过密度、摩尔体积和玻璃化转变温度（T-g）等物理参数研究了这些玻璃的结构性质。发现密度值、摩尔体积值和T-g值强烈依赖于玻璃的化学成分。密度从3.68+/-0.01 g/cm（3）降低到3.27+/-0.01 g/cm（3），Tg从372+/-2摄氏度增加到407+/-2摄氏度。C随着TiO2含量从0 mol%增加到10 mol%。红外光谱和拉曼光谱证实了这种结构方法。玻璃的化学耐久性试验表明，含有焦磷酸盐（Q（1））和正磷酸盐（Q（0））单元的组合物更耐水。通过确定光学带隙能（E-g）和厄尔巴赫能（Delta E）等参数，对其光学性质进行了评估，其值是确定的。这些参数的变化方向相反；E-g从2.12 eV降至1.35 eV，并且。。随着TiO2摩尔百分比的增加，从0.38 eV增加到0.48 eV。

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