Preparation of Precursor of Stainless Steel Foam with 3-D Open Cells Network StructureZHOU Xiang-yang~1,LI Shan-ni~2,LI Jie~1,LONG Bo~1(1.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China;2.School of Biological Science and Technology,Central South University,Changsha 410083,China)The preparation technology of precursor for stainless steel foam with 3-D network open cells structure was investigated.The experimental results showed that the stainless steel foam can be obtained by firstly preparing precursor by pouring the slurry containing stainless steel powder and additive A into the pretreated polyurethane sponge,and then sintering the precursor;the pretreatment of sponge was effective to ensure the slurry uniformly distribute in sponge;when the range of additive A concentration and solid content in slurry were 9%～13% and 52%～75% by weight respectively.The stainless steel foams with favorable 3-D open cells network structure and uniform muscles could be obtained;the particle size of stainless steel powder and the slurry loadings in precursors had great effects on the open porosity and bending strength of stainless steel powder foam.stainless steel foam;3-D open cells network structure;precursor preparation