热电池阳极材料Li-B合金的力学性能  

Mechanical Property of Li-B Alloy Used for Anode Materials of Thermal Battery

作　　者：黄海锋[1] 刘志坚[1] 杨晓亮[1] 王辉[1] 文佑才[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083

出　　处：《材料研究学报》2010年第2期187-190,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金50172062资助项目~~

摘　　要：考察试验条件对Li-B合金拉伸强度的影响,研究了Li-B合金锭内部的均匀性。结果表明,拉伸方向,试验温度和试样轧制厚度对合金的拉伸强度有显著的影响,强度的最大变化率可达36%;轧制后合金中LiB化合物纤维的织构对强度有显著的影响,合金21℃时的平均拉伸强度为24.5 MPa。合金锭心部的强度比边缘的高,下部的比上部的高;而边缘的密度大于中心的,底部的大于上部的;出现这些结果的原因是,在合金的制备过程中重力和离心力的共同作用使B粉的粗、细颗粒分布不均匀。The effects of experiment conditions on tensile strength and the inner uniformity of Li-B alloy ingot were investigated by using mechanical strength method.The results show that specimen orientation,test temperature and specimen thickness have remarkable influence to test results.The maximum diversity of strength is up to 36%,and texture of LiB compound fiber in the rolled alloy has significant effect to strength.The average strength of Li-B alloy is about 24.5 MPa at 21℃.For a ingot, strength in the center is higher than that on the edge,and that on the bottom is more than that on the top,but the density on the edge is beyond that in the center,and that on the bottom is more than that on the top too.The reason is the uneven distribution of coarse particle and fine particle of boron powder because of the influence of gravity and centrifugal force in the preparation process of Li-B alloy.

关 键 词：无机非金属材料 热电池 阳极材料 LI-B合金 强度 

分 类 号：TM911[电气工程—电力电子与电力传动]