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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 >Hydrogenation and microstructural study of melt-spun Ti_(0.8)V_(0.2)
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Hydrogenation and microstructural study of melt-spun Ti_(0.8)V_(0.2)

机译：熔纺Ti_（0.8）V_（0.2）的加氢和微观结构研究

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摘要

In this work we utilized the melt spinning process to prepare a nanostructured Ti_(08)V_(0.2) alloy for hydrogen storage applications. The alloy ribbons were solidified from the melt using two different wheel spin?ner velocities, 1000 and 3000 rpm. LOM, and SEM were utilized to examine the microstructures of the ribbons and their corresponding hydrides. Hydrogen absorption and desorption experiments were per?formed using a TDS setup. Arc melted Ti_(0.8)V_(0.2) and rapidly solidified (RS) materials (RS1000 and RS3000) formed FCC dihydrides with lattice parameters ranging from 4.4198 to 4.4338 A. RS resulted in a dramatic decrease of the grain size, down to smaller than 200 nm for the hydrogenated Ti_(0.8)V_(0.2) RS3000 alloy. The thermal stability of the hydrides was strongly affected by the RS solidification rate. For the hydride of Ti_(0.8)V_(0.2) RS3000, a significant decrease in the thermal stability was observed, so the peak of hydrogen desorption was shifted to much lower temperatures, by ~80 °C, as compared to the hydrogenated as cast alloy.
机译：在这项工作中，我们利用熔融纺丝工艺制备了用于储氢应用的纳米结构Ti_（08）V_（0.2）合金。使用两个不同的车轮旋转速度，分别为1000和3000 rpm，从熔体中凝固合金带。 LOM和SEM用于检查带材及其相应氢化物的微观结构。使用TDS装置进行氢吸收和解吸实验。电弧熔化的Ti_（0.8）V_（0.2）和快速凝固的（RS）材料（RS1000和RS3000）形成了FCC二氢化合物，晶格参数范围为4.4198至4.4338 A.RS导致晶粒尺寸显着减小，甚至小于氢化Ti_（0.8）V_（0.2）RS3000合金为200 nm。氢化物的热稳定性受RS固化速率的强烈影响。对于Ti_（0.8）V_（0.2）RS3000的氢化物，观察到热稳定性显着降低，因此与铸造时氢化的氢相比，氢解吸的峰移至约80°C的低得多的温度。合金。

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