Abstract: A method for fabricating a functionally graded tungsten-copper composite (W—Cu FGC) may include the following steps. A binder alloy powder may be prepared that may include mechanically alloyed metal powders of nickel (Ni), copper (Cu), and manganese (Mn); the binder alloy powder may be mixed with a pure tungsten (W) powder to obtain a modified W powder; a plurality of W—Cu composite powders may be prepared by mixing the modified W powder with pure copper powder with different ratios; the plurality of W—Cu composite powders may then be stacked inside a die; the stacked plurality of W—Cu composite powders may be pressed inside the die to obtain a W—Cu compact; and the W—Cu compact may be sintered to obtain a W—Cu FGC.

Abstract: Metallic-ceramic composite membranes and methods for producing the metallic-ceramic composite membranes are disclosed. The metallic-ceramic composite membranes include the advantages of a metallic substrate relative to known ceramic substrates, such as high permeability, better mechanical properties, and corrosion resistance, and the advantages of a ceramic membrane, such as high permeability, high permselectivity, mechanic strength, and thermal stability. Therefore, a three-layer metallic-ceramic composite membrane, including a porous metallic substrate, a first, intermediate mesoporous ?-alumina membrane layer, and a second, top mesoporous ?-alumina membrane layer, is disclosed. Because of the high mechanical strength of the metallic-ceramic composite membrane and because the pores of the second mesoporous ?-alumina membrane have a narrow size distribution and average size of about 2.

Abstract: Metallic-ceramic composite membranes and methods for producing the metallic-ceramic composite membranes are disclosed. The metallic-ceramic composite membranes include the advantages of a metallic substrate relative to known ceramic substrates, such as high permeability, better mechanical properties, and corrosion resistance, and the advantages of a ceramic membrane, such as high permeability, high permselectivity, mechanic strength, and thermal stability. Therefore, a three-layer metallic-ceramic composite membrane, including a porous metallic substrate, a first, intermediate mesoporous ?-alumina membrane layer, and a second, top mesoporous ?-alumina membrane layer, is disclosed. Because of the high mechanical strength of the metallic-ceramic composite membrane and because the pores of the second mesoporous ?-alumina membrane have a narrow size distribution and average size of about 2.