粉末粒度对FeAl金属间化合物多孔材料孔结构的影响  

Effect of powder size on the pore structure of porous FeAl intermetallics

作　　者：高海燕[1] 贺跃辉[1] 沈培智[1] 陈刚[1] 江垚[1] 黄伯云[1] 徐南平[2] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]南京工业大学膜科学技术研究所,江苏南京210009

出　　处：《功能材料》2009年第9期1513-1515,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20636020;20476101);国家杰出青年基金资助项目(50721003)

摘　　要：研究了粉末粒度对FeAl金属间化合物多孔材料孔结构的影响。研究表明,当粉末粒径在60μm以上时,随着粉末粒径的增加,FeAl金属间化合物多孔材料的总孔隙度和开孔隙度变化不大,即粉末粒度不是决定FeAl多孔材料孔隙度的主要因素;粉末粒度是决定FeAl金属间化合物多孔材料最大孔径的主要因素,在18～125μm的粒度范围内,多孔体最大孔径与粉末粒径之间严格遵循dm=0.4.dp的直线变化规律。Effect of powder size on the pore structure of porous FeAl intermetallics has been studied in this paper. The results show that the overall and open porosity have no obvious changes with the increasing of powder size when the powder size is bigger than 60μ, which is said the powder size is not the main factors determining the porosity of porous FeAl; Powder size was one of the main factors determining the maximum pore size. The maximum pore size dm and powder size dp were investigated to obey the equation dm=0.4 ·dp strictly when powder size is in the range of 18-125μm .

关 键 词：粉末粒度 FeAl金属问化合物 多孔材料 孔结构 

分 类 号：TG146[一般工业技术—材料科学与工程]