Effect of cerium content on microstructure and hydrogen storage performance of Ti24Cr17.5V50Fe8.5Cex (x=0-1.0) alloys
来源期刊：JOURNAL OF RARE EARTHS2009年第1期
论文作者：WANG Shumao LI Zhinian LI Yan HUANG Zhuo JIANG Lijun MI Jing LIU Xiaopeng
Key words：hydrogen storage materials; Ti-Cr-V alloys; BCC alloys; rare earths;
Abstract: Effect of Ce addition on microstructure and hydrogen storage performance of Ti24Cr17.5V50Fe8.5Cex (x=0, 0.5at.%, 0.8at.% and 1.0at.%) alloys was studied by X-ray diffraction, scanning electron microscopy and P-C-isotherm measurements. The results indicated that Ce addition was a useful way to improve the flatness of the plateau and increase hydrogen storage capacity of Ti24Cr17.5V50Fe8.5 alloy. It was indicated that both homogenization of composition and increase of hydrogen diffusion coefficient were the main reasons for improving the hydrogen storage performance of Ti24Cr17.5V50Fe8.5Cex alloys.
WANG Shumao1，LI Zhinian1，LI Yan1，HUANG Zhuo1，JIANG Lijun1，MI Jing1，LIU Xiaopeng1
(1.Energy Material and Technology Research Institute, General Research Institute for Non-ferrous Metals, Beijing 100088, China)
Abstract:Effect of Ce addition on microstructure and hydrogen storage performance of Ti24Cr17.5V50Fe8.5Cex (x=0, 0.5at.%, 0.8at.% and 1.0at.%) alloys was studied by X-ray diffraction, scanning electron microscopy and P-C-isotherm measurements. The results indicated that Ce addition was a useful way to improve the flatness of the plateau and increase hydrogen storage capacity of Ti24Cr17.5V50Fe8.5 alloy. It was indicated that both homogenization of composition and increase of hydrogen diffusion coefficient were the main reasons for improving the hydrogen storage performance of Ti24Cr17.5V50Fe8.5Cex alloys.
Key words:hydrogen storage materials; Ti-Cr-V alloys; BCC alloys; rare earths;
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