Nanosized Nickel, Preparation Of Nano-diamond / Nickel Complexes And The Nature Of Research

Nano-nickel and ND (nano-diamond)/Ni composites were separately prepared by reduction of NiCl₂·6H₂O glycol solution and that of doped with 1% (weight percent) of nano-diamond. The effect of NiCl₂·6H₂O concentration, reaction temperature, dispersant dosage on the particle size and shape of nano-nickel and ND/Ni composites were discussed. The prepared nano-nickel and ND/Ni composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR). The results showed the prepared nano-nickel and ND/Ni composites were almost spherical-like, and the structure of ND/Ni composites was core-shell.The catalysis performance of the thermal decomposition of ammonium perchlorate (AP) by addition of nano-nickel, ND/Ni composites, mixture of nano-nickel and nano-diamond were studied by differential thermal analysis (DTA). The effects of the particle size and content of nano-nickel, ND/Ni composites on the thermal decomposition of AP were dissussed. It was found that the catalysis performance of the thermal decomposition of AP by addition of ND/Ni composites was superior to nano-nickel, mixture of nano-nickel and nano-diamond.The friction behaviors of nano-nickel, ND/Ni composites as additive in liquid paraffin were evaluated on MM-200 Ring-Lump Friction and Wear Tester. The effects of the content of different additives and different load on the friction performance were discussed. It was found that when the additive mass percent was 0.5% and the load was lower, nano-nickel and ND/Ni composites showed preferable friction-reducing and anti-wear properties.