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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Hydrogen permeation and transmission electron microscope observations of V-Al alloys
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Hydrogen permeation and transmission electron microscope observations of V-Al alloys

机译：钒铝合金的氢渗透和透射电子显微镜观察

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Hydrogen permeation and transmission electron microscope (TEM) observations were performed for V-Al alloys (10-40 mol percent Al). Hydrogen permeability of V-Al alloys decreased with aluminum content, but not in a monotonous manner. Below 20 mol percent of aluminum, hydrogen permeability of V-Al alloys decreased linearly with aluminum content. From 20 to 30 mol percent of aluminum, hydrogen permeability decreased abruptly. A15 phase which is shown in the V-Al phase diagram was not observed in any samples, quenched from 1373 K or aged at 853 K for 100-350 h. Instead, some precipitates of 200 nm to 1 mu m were observed at grain boundaries, sub-boundaries and inside the grains. The amount of the precipitates, however, was too small to explain the significant drop of hydrogen permeability observed in the alloys with more than 20 mol percent Al. The long-time permeation test showed that V-10Al sample possessed satisfactory durability to be used as hydrogen purification materials.
机译：对V-Al合金（10-40 mol％Al）进行了氢渗透和透射电子显微镜（TEM）观察。 V-Al合金的氢渗透性随铝含量的降低而降低，但不是单调的。铝含量低于20摩尔百分比时，V-Al合金的氢渗透性随铝含量线性降低。从铝的20至30摩尔％，氢渗透率突然下降。 V-Al相图中显示的A15相在任何样品中均未观察到，从1373 K淬火或在853 K时效100-350 h时效。取而代之的是，在晶界，亚界和晶粒内部观察到一些200 nm至1μm的析出物。但是，析出物的量太少，不能解释在铝含量超过20摩尔％的合金中观察到的氢渗透率显着下降。长时间的渗透测试表明，V-10Al样品具有令人满意的耐久性，可以用作氢纯化材料。

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