Ni16Cr9Al多孔材料的组织与性能  

Microstructure and Performances of Ni16Cr9Al Porous Materials

作　　者：康新婷[1] 谈萍[1] 李纲[1] 迟煜頔[1] 李广忠[1] 沈磊[1] 李亚宁[1] 

机构地区：[1]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》2013年第S2期589-592,共4页Rare Metal Materials and Engineering

摘　　要：以粒度小于25μm的Ni16Cr9Al预合金细粉末为原料,采用模压成形、真空烧结的方法制备了Ni16Cr9Al多孔材料,研究了Ni16Cr9Al预合金粉末的成形和烧结性能。结果表明:Ni16Cr9Al细粉末的压制成形性能较差,压坯强度低;烧结过程中,径向收缩大于轴向收缩,最大孔径和透气系数随烧结温度的升高而减小,1130℃烧结温度制备的Ni16Cr9Al多孔材料孔径细小,孔径分布均匀。Using Ni16Cr9Al pre-alloy powder with<25 μm particle size as starting material,porous Ni16Cr9Al material was prepared by pressing and vacuum sintering fine powder of grain size less than 25 μm.The performances of the pre-alloyed Ni16Cr9Al powder forming and the sinter were investigated.The results show that the molding ability of the raw Ni16Cr9Al powder is relatively poor and the strength of the green body is lower.The shrinkage of the radial direction is more than that of the axial in the course of sintering.The maximal pore size and the permeability decrease with the increase of the sintering temperature.The porous Ni16Cr9Al material prepared at 1130 ℃ sintering temperature has a small pore size with a homogeneous distribution.

关 键 词：Ni16Cr9Al 多孔材料 模压成形 真空烧结 

分 类 号：TB383.4[一般工业技术—材料科学与工程]