( 中國科學(xué)院 上海微系統(tǒng)與信息技術(shù)研究所， 上海 200050)
摘 要: 研究了以V取代TiCr基儲氫合金中的部分Cr對合金的吸氫平臺壓力、 儲氫容量以及儲氫性能的影響。 X射線衍射分析表明， 合金的相組成隨著合金中V含量的增加由單一的Laves相經(jīng)由兩相混合共存逐漸轉(zhuǎn)變?yōu)閱我坏捏w心立方相；壓力－溫度－組成測試結(jié)果表明： V取代TiCr1.8合金中的部分Cr可以有效降低合金的吸氫平臺壓力， 提高合金的最大儲氫量，同時合金吸氫反應(yīng)的焓變也有很大的增加。
關(guān)鍵字: 儲氫合金； Ti-Cr-V合金； 儲氫特性； PCT
CHEN Jin-zhou, XIA Bao-jia, XU Nai-xin
（ Shanghai Institute of Microsystem and Information Technology,
Chinese Academy of Sciences, Shanghai 200050, China）
Abstract: To decrease the hydrogen absorbing plateau pressure and increase the hydrogen storage capacity of TiCr based alloy, chromium was partially substituted by vanadium. The dependence of hydrogen storage capacity on vanadium content was investigated. X-ray diffraction results show that alloy phase composition changes from single Laves phase to single body centered cubic phase with increasing vanadium content. Partial substitution of vanadium for chromium can decrease the hydrogen absorbing plateau pressure effectively. Both the maximum hydrogen absorption content and the enthalpy changes of hydrogen absorption increase with increasing vanadium content.
Key words: hydrogen storage alloys; Ti-Cr-V alloys; hydrogen storage properties; pressure-composition-temperature
