Analysis of viscosity data in As2Se3, Se and Se95Te5 chalcogenide melts using the pressure assisted melt filling technique

Analysis of viscosity data in As2Se3, Se and Se95Te5 chalcogenide melts using the pressure assisted melt filling technique
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使用压力辅助熔体填充技术分析 As2Se3、Se 和 Se95Te5 硫族化物熔体的粘度数据

DOI:
10.1016/j.jnoncrysol.2019.01.037
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发表时间:
2019
影响因子:
3.5
通讯作者:
M. A. Schmidt
M. A. Schmidt
中科院分区:
材料科学2区
文献类型:
--
作者:
J. Barták;P. Koštál;D. Valdé;J. Málek;T. Wieduwilt;J. Kobelke;M. A. Schmidt

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压力辅助熔融填充技术(PAMFT)是将玻璃或半导体等新材料集成到光纤中的有前途的方法,而实际上仅需要少量的起始材料(<0.1mg)来实现这种几厘米长的混合光纤。PAMFT还能够提供在填充过程中确定的玻璃形成熔体的粘度数据。该技术的主要优点是仅需少量材料(<0.1 mg),并且熔融材料在高压下封装在二氧化硅毛细管内。因此,PAMFT代表了测量高挥发性和腐蚀性材料(如硫属化物)的一种有前途的方法。在这里,我们提出了一个详细的分析应用PAMFT粘度测量所选的硫系化合物系统相对于实验条件(施加的压力和毛细管直径)和物理材料的属性(表面张力和接触角对石英玻璃)。对于我们的研究,我们选择了两个众所周知的硫属化物材料(Se和As 2Se 3)作为对二氧化硅玻璃的非润湿和润湿液体的代表。在0.01 ~ 25 Pa·s范围内测定了熔体粘度,表明PAMFT法是一种适用于硫系合金熔体粘度测定的方法,即使在忽略表面张力和接触角影响的情况下,也能提供可靠的数据。我们还提出了新的粘度数据Se 95 Te 5硫系熔体使用PAMFT。
The pressure-assisted melt filling technique (PAMFT) is promising approach for integrating new materials such as glasses or semiconductor into fiber, while only a small amount of starting material (<0.1 mg) is actually required for the implementation of such hybrid optical fibers of length of several centimeters. PAMFT has also the capability to provide viscosity data of glass-forming melts determined during the filling process. The main advantage of this technique – the demand of only small amounts of material (<0.1 mg) is accompanied by the fact that the molten material is encapsulated inside a silica capillary under high pressure. Therefore, PAMFT represents a promising method for measuring highly volatile and corrosive materials, such as chalcogenides. Here we present a detailed analysis on applying PAMFT for viscosity measurement of chosen chalcogenide systems with respect to experimental conditions (applied pressure and capillary diameter) and physical materials properties (surface tension and contact angle towards silica glass). For our study, we chose two well-known chalcogenide materials (Se and As2Se3) as representatives of non-wetting and wetting liquids towards silica glass. The melt viscosities were measured in the range of 0.01–25 Pa·s showing that PAMFT is a suitable method for the determination of viscosity of chalcogenide melts providing reliable data even if in the situation the influence of surface tension and contact angle is neglected. We also present new viscosity data on Se95Te5chalcogenide melt obtained using PAMFT.
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