新的多孔泡沫镍制备工艺  

A Novel Technique of Producing Porous Nickle Foam

作　　者：陈劲松[1] 宫凯[2] 黄因慧[2] 田宗军[2] 刘志东[2] 王桂峰[2] 

机构地区：[1]淮海工学院,江苏连云港222005 [2]南京航空航天大学,江苏南京210016

出　　处：《材料科学与工程学报》2010年第5期676-679,共4页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(50575104);淮海工学院自然科学基金资助项目(Z2009003);淮海工学院人才引进启动基金资助项目

摘　　要：针对目前泡沫金属制备方法的缺点,提出了一种泡沫金属制备的新方法——电解液喷射沉积法。研究了喷射沉积制备泡沫镍的工艺,自行研制了试验装置,制备了具有不同孔隙率的泡沫镍试样,分析了相关工艺参数（电解液成分、电流密度、电解液喷射速度等）对泡沫镍微观结构的影响。结果表明：采用相对较低的镍离子浓度配方Bath A对制备均匀致密的枝晶多孔结构有利。随着电流密度的提高,泡沫镍的孔隙率逐渐降低;随着电解液喷射速度的提高,泡沫镍的孔隙率逐渐增加。总体上采用电解液喷射沉积法制备的泡沫镍的孔隙率在30~70%之间。To overcome the demerits of currently used techniques of producing porous metals,a novel electrolyte jet electrodeposition method was presented.The related techniques of producing porous metal nickel by using jet electrodeposition were introduced,preparation of the porous metal nickel samples with different porosities were made by the developed device.The influences of main experimental parameters,such as electroforming composition,current density and electrolyte jet speed,on the microstructure of specimens were studied.The results show that the formula of Bath A,which has a relatively low concentration of nickel ions,is more favorable to produce dendritic porous structure.The porosity of the porous nickel increases with increasing current density and with decreasing electrolyte jet speed.Generally,the porosity is in the range of 30-70%.

关 键 词：泡沫镍 喷射沉积 孔隙率 电流密度 喷射速度 

分 类 号：TG153[金属学及工艺—热处理]