Cr;x =0， 0.2)合金的貯氫性能
(浙江大學(xué) 材料科學(xué)與工程系， 杭州 310027)
摘 要: 研究了Ti0.9Zr0.2Mn(1.8-x )Mx V0.2(M=Ni， Cr; x =0， 0.2)合金的晶體結(jié)構(gòu)與貯氫性能。 結(jié)果表明， Ti0.9Zr0.2Mn1.6Ni0.2V0.2和Ti0.9Zr0.2Mn1.6Cr0.2V0.2的貯氫量達(dá)到240?mL/g。 合金的主相均為C14 Laves相， 鎳、 鉻的取代使點(diǎn)陣常數(shù)和晶胞體積增大， P—C—T曲線的滯后降低， 壓力平臺(tái)的傾斜度增加。
關(guān)鍵字: TiMn基合金； 貯氫性能；晶體結(jié)構(gòu)
Ti0.9Zr0.2Mn(1.8-x )Mx V0.2(M=Ni，Cr; x =0，0.2) alloy
CHEN Li-xin, XU Yan-hui， WANG Xin-hua
（Department of Materials Science and Engineering,
Zhejiang University, Hangzhou 310027， P.R.China）
Abstract: The crystal structure and the hydrogen storage properties of Ti0.9Zr0.2Mn(1.8-x )Mx V0.2(M=Ni，Cr; x =0，0.2)alloys were studied. The results showed that the main phase of alloys is C14 type Laves phase. The lattice constants and lattice volume increase， when Ni or Cr partially substitute Mn. The hydrogen-absorption capacity of Ti0.9Zr0.2Mn1.6Ni0.2V0.2 and Ti0.9Zr 0.2Mn 1.6 Cr 0.2V 0.2 reaches 240?mL/g. Besides， the substitution of Ni，Cr for Mn leads to the increase in hydrogen absorption capacity， the decrease of hysteresis and the enhancement of plateau slope.
Key words: Ti-Mn based alloy；hydrogen storage property；crystal structure
