Ultrafine nickel coated copper powder,Superfine Ni coated Cu powder,Submicron Ni coated Cu powder Molecular formula:Ni-Cu Average particle size:0.3 micron (TEM) Size distribution:0.06-0.6 micron Purity:Ni:30%;Cu:70% Appearance:Black powder Shape:Crystal Specific surface area:3-15m2/g Apparent density:0.2-0.8 g/cm3 Packing:Aluminum foil bag Minimum Order: 1 KG