孔隙度对纤维毡透气性能和最大孔径的影响  

Effects of Porosity on Gas Permeability and Maximum Pore Size of Fiber Felts

作　　者：许佩敏[1,2] 张健[2] 孙旭东[1,2] 李程[2] 奚正平[2] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《稀有金属材料与工程》2009年第A01期447-450,共4页Rare Metal Materials and Engineering

摘　　要：在同一单重条件下,通过控制厚度,得到不同孔隙度的Ni纤维毡。研究了Ni纤维毡孔隙度的变化对其透气性能和最大孔径的影响。结果表明:相对透气系数和最大孔径随孔隙度的减小而减小;相同压差下,流量随孔隙度的增大而增大;相同孔隙度下,相对透气系数随压差增大,先减小后增大,并且孔隙度越大这种趋势越明显。Fiber felts with different porosity through controlling thickness at the same single weight were obtained. The effects of change of porosity on relative gas permeability and maximum pore size are investigated in this paper. The results indicate that the relative gas permeability and the maximum pore size decrease with porosity decreasing, and at the same pressure drop, the flow rate increases with porosity increasing. At thesame porosity, the relative gas permeability decrease with porosity increasing and then increase, and the tendency is more appreciable at larger porosity.

关 键 词：Ni纤维毡 孔隙度 压缩变形 相对透气系数 最大孔径 

分 类 号：TF125.6[冶金工程—粉末冶金] TB383[冶金工程—冶金物理化学]