Effect of pore forming agent content on porous nickel plate prepared by powder rolling
Porous nickel plates with porosity of 22.2％-52.4％were prepared by powder rolling technology using ammonium bicarbonate(NH4HCO3)as pore-making agent.The effect of pore-forming agent content on microstruc-ture and properties of porous nickel plate was studied.The results show that with the increase of pore-forming agent content,the porosity of porous nickel plate increases gradually,the relative permeability increases gradually,and the tensile strength decreases gradually.When the content of pore-forming agent is 20％,the porosity of porous nickel plate is 40.7％,the relative permeability coefficient is 10.79 m3/(h·kPa·m2),and the tensile strength is 135 MPa.When the content of pore-forming agent is 40％,the porosity of porous nickel plate is 52.4％,the relative permeability coefficient is 41.0 m3/(h·kPa·m2),and the tensile strength is reduced to 51 MPa.
powder rolling technologycontent of pore-forming agentporous nickel platemicrostructure and property
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