置换还原法制备的镀镍铝粉及其导电性能.

In order to get good properties of nickel-plated aluminum powder, the nickel-plated aluminum powder was prepared by displacement reaction on the surface of the aluminum powder. The morphology and composition of the nickel-plated aluminum powder was characterized by scanning electron microscope, energy dispersion spectrometer and X-ray diffraction spectrometer. The apparent density, the tap density and pressure of the nickel-plated aluminum powder were tested by an apparent density tester, at ap density tester and a DC resistance tester. The results showed that when the single displacement temperature was 70°C and the concentration of nickel salt and reductant was 60g/L, the nickel-plated aluminum powder was coated completely and closely. The nickel content of the nickel-plated aluminum powder was 75.23%, the apparent density and tap density were 2.179g/cm³ and 2.547g/cm³, respectively. The compaction resistivity could reach 10.6mΩ·cm. [ABSTRACT FROM AUTHOR]