... / cm 3) is 6.57 Polymorphs is Spherical Main characteristics of micro-nickel powder, ultrafine nickel powder prepared by a special ... combines the electrolytic nickel powder, and to restore the advantages of nickel powder and atomized nickel powder in one, high-purity ... less than 99.5%, carbon, phosphorus, low content of sulfur, oxygen and other elements, controlled particle size, loose than controlled ...