摘要
本文主要研究了烧结金属多孔材料孔隙的产生原因、压制力对孔隙率的影响以及孔隙的连通性。实验中利用模压机制备了一批金属粉末松压试样,建立了分析孔隙产生原因的几何模型;烧结成形后通过金相分析了孔隙的特征,通过计算和实验检测分析了孔隙率的大小,通过测试透气性验证了孔隙的连通性。实验结果证实本实验所制备的多孔材料具有较高的孔隙率,且孔隙具有较好的连通性。
The reason of porosity formation, effect of pressure on porosity and linking of pores in metallic porous material were studied. Several groups of samples were made on moulding press and geometrical model of porosity formation was established to explain the mechanism. The porosity of sintered samples was observed on microscope, calculated and measured.The linking of pores was proved by measured permeability. The results showed that the samples prepared have high porosity and the pores are linked with each other quite frequently.
出处
《粉末冶金工业》
CAS
北大核心
2005年第4期6-10,共5页
Powder Metallurgy Industry
关键词
烧结金属多孔材料
透气性
几何模型
孔隙率
连通性
sintered metallic porous material
gas permeability
geometrical model
porosity
linking
