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AssigneeColorado School of Mines
InventorsSteven M. Landin, Dennis W. Readey, Darin J. Aldrich
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Porous metal-containing materials are provided for a variety of uses including filters, electrodes for batteries and fuel cells, light weight structural materials, heat exchangers and catalysts. A method is provided for making the porous metal-containing materials involving vapor phase sintering of a metal oxide green form followed by reduction to form a porous metal-containing material, typically without any significant shrinkage of the sample occurring during processing. The porous metal-containing materials may have porosities of from about 40 percent to as high as 90% in some embodiments. Furthermore, the pore volume is highly interconnected, which is particularly advantageous for many applications.
A method for making a porous metal-containing material, comprising chemically reducing to metallic form at least a portion of a porous sintered metal oxide, wherein the porous sintered metal oxide is a porous vapor phase sintered metal oxide.
A method for making a porous metal-containing material having a porosity of at least about 40 percent, the method comprising sintering a porous green form, including at least one metal oxide, to prepare a porous sintered metal oxide and chemically reducing to metallic form at least a portion of the porous sintered metal oxide to prepare the porous metal-containing material, wherein overall shrinkage, determined by comparison of the bulk volume of the porous metal-containing material to the bulk volume of the porous green form, is smaller than about 15 volume percent relative to the bulk volume of the porous form.
A porous metal-containing material produced by chemical reduction to metallic form of at least a portion of a porous vapor phase sintered metal oxide.
Dependencies are inferred from the claim text.