Effect of Sintering Time on the Microstructure of Porous Tantalum

摘要:

采用高比容钽粉(< 0.45 μm)通过真空烧结的方法制备了多孔钽金属，研究了在1150 ℃条件下烧结保温的时间（10，20，30，40, 50 min）对多孔钽金属的微观结构以及孔隙性质的影响。实验发现多孔钽金属的孔隙率在50%(体积分数)附近，其积累体积大小分布为0.08 cm3/g

Abstract:

Porous tantalum materials were prepared by a vacuum sintering technique using fine tantalum powder (< 0.45 μm) as the starting raw material. Effects of sintering time (10, 20, 30, 40 and 50 min) at 1250 oC on the microstructures and the porous characteristics of the porous tantalum were investigated. The results show that the porous tantalum materials have the porosity of about 50% with pore size distribution of 0.08 cm3/g