Mg-50wt.%Ti_(1-x)C(x=0.1,0.2,0.3,0.4)合金的贮氢性能研究  

Research on hydrogen storage properties of Mg-50wt.%Ti_(1-x)C_x(x=0.1,0.2,0.3,0.4)alloys

作　　者：蓝志强[1] 黄显吞[1] 黄红强[1] 蒋卫卿[1] 

机构地区：[1]广西大学物理科学与工程技术学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2009年第4期571-575,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金(50861003);广西自然科学基金(桂科自0728028);广西大学科研项目(X081056);广西大学有色金属及材料加工新技术教育部重点实验室开放基金(GXKFJ-04)资助项目

摘　　要：采用机械合金化方法制备Mg-50wt.%Ti1-xCx(x=0.1,0.2,0.3,0.4)贮氢合金。X-射线衍射(XRD)分析结果表明,合金主要由Mg、Ti、C以及二元合金相Ti2C0.06和Mg2C3组成,随着球磨时间增加,合金的非晶化程度提高。压强-成分-温度(PCT)测试结果显示,Mg-50wt.%Ti1-xCx(x=0.1,0.2,0.3,0.4)合金的贮氢量分别为2.96、2.95、2.76、2.6wt.%;随着碳含量的增加,样品吸氢量逐渐减少,放氢温度和平台压也随之下降;适当增加球磨时间可降低吸放氢温度。Mg-50wt.%Ti1-xC（x=0.1,0.2,0.3,0.4） hydrogen storage alloys were prepared by using mechanical alloying. X-ray diffraction （XRD） results show that the alloy is mainly composed of Mg, Ti, C and binary alloy phase Ti/Co.06 and Mg2C3. The amorphous degree of alloys increases with the milling time. The pressure-composition-temperature （PCT） testing results show that the hy- drogen absorption capacity of the Mg-50wt.%Ti1-xC（x=0.1,0.2,0.3,0.4） alloys reaches to 2. 96,2.95,2.76 and 2.6wt. % respectively. All the hydrogen storage, the temperature of hydrogen decomposition and the plateau pressure decrease with C content. In addition, it was found that the temperature of hydrogen absorption and decomposition decreased somewhat with the milling time.

关 键 词：镁基合金 贮氢性能 机械合金化 X-射线衍射 

分 类 号：TG139.7[一般工业技术—材料科学与工程]