Effects of precursors on properties of nickel powder by chemical vapor deposition method

In order to improve the crystallinity and dispersibility of nickel powder for multilayer ceramic capacitors, the nickel powder was prepared by chemical vapor deposition. The effects of different particle sizes of nickel chloride on the properties of nickel powder were investigated, and the samples were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Laser Particle Size Analyzer (LPSA). The experimental results indicate that the morphology of nickel powder changes from spherical to octahedral and cubic as the particle size of nickel chloride decreases. Additionally, the crystallization and oxidation resistance increase with larger particle sizes, although dispersion worsens. The comprehensive properties of the prepared nickel powder are optimal when the particle size of nickel chloride is 82.5 μm.