论文标题
部分可观测时空混沌系统的无模型预测
Evaluation of the hydrogen solubility and diffusivity in proton-conducting oxides by converting the PSL values of a tritium imaging plate
论文作者
论文摘要
质子传导氧化物在氢传感器，氢泵和其他电化学设备中具有潜在的应用，包括核融合反应器的trifium纯化和恢复系统。尽管在这种氧化物材料中氢（H）的分布是一个重要方面，但它的精确测量很困难。在本研究中，BAZR0.9Y0.1O2.95（BZY），BAZR0.955Y0.03CO0.015O2.97（BZYC）（BZYC）和CAZR0.9IN0.1O2.95（CZI）的氢溶解度和扩散性行为使用Tried Witer Vater Vail.2 Kpor（bzi）进行了研究。 （t）= 0.1％）通过转换成像板（IP）的光刺激发光（PSL）值。将样品在673 K下暴露于DTO蒸气2 h或在873 K下持续1小时。通过常规粉末冶金剂制备盘状氧化物标本（直径〜7.5毫米；厚度〜2.3 mm；理论密度（TD）> 98％）。所有三种材料t暴露的样品表面的IP图像表明，Bzy显示出最均匀的T分布，具有最高的Tritium活性。切割标本的横截面t浓度谱图表明，t比CZI更深地扩散到Bzy和Bzyc中。 CZI标本中的氢溶解度和扩散率低于BZY和BZYC标本中的氢溶解度和扩散率。这表明锆酸钡比锆石比钙酸盐更有利。
Proton-conducting oxides have potential applications in hydrogen sensors, hydrogen pumps, and other electrochemical devices including the tritium purification and recovery systems of nuclear fusion reactors. Although the distribution of hydrogen (H) in such oxide materials is an important aspect, its precise measurement is difficult. In the present study, the hydrogen solubility and diffusivity behavior of BaZr0.9Y0.1O2.95 (BZY), BaZr0.955Y0.03Co0.015O2.97 (BZYC), and CaZr0.9In0.1O2.95 (CZI) were studied using tritiated heavy water vapor i.e., DTO (~2 kPa, tritium (T) = 0.1%) by converting the photostimulated luminescence (PSL) values of the imaging plate (IP). The samples were exposed to DTO vapor at 673 K for 2 h or at 873 K for 1 h. The disc-shaped oxide specimens (diameter ~7.5 mm; thickness ~2.3 mm; theoretical density (TD) > 98 %) were prepared by conventional powder metallurgy. The IP images of the specimen surfaces of all the three materials T-exposed revealed that BZY showed the most uniform T distribution with the highest tritium activity. The cross-sectional T concentration profiles of the cut specimens showed that T diffused deeper into BZY and BZYC than into CZI. The hydrogen solubility and diffusivity in the CZI specimen were lower than that in the BZY and BZYC specimens. This suggested that barium zirconates were more favorable proton conductors than calcium zirconates.
