镍-磷/金纳米粒子复合化学镀层的研究

在化学镀镍磷溶液中添加金纳米粒子，在基体钢铁上沉积得到镍-磷/金纳米粒子复合镀层. 金纳米粒子在镀液中的浓度为1.0?μmol?L-1. 用扫描电子显微镜，能谱仪，示差扫描热量分析仪，X 射线衍射仪，显微硬度计等仪器对镀层性能进行了分析. 通过EDS分析表明，Ni P镀层中P的质量分数为9.72%，而Ni P/Au镀层中P质量分数为9.29%，金的质量分数为0.93%. 与镍-磷合金镀层相比，纳米复合镀层具有较高的硬度，并且镀层组织致密，孔隙率小，对基体具有更好的保护作用.

Study of the nano composite electroless coating of Ni-P/Au

The nano composite coating of Ni P/Au was obtained by adding gold nanoparticles into the Ni P electroless plating solutions. The concentration of gold nanoparticles in electroless plating solution is 1.0?μmol?L-1. The coating properties were analyzed by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), differential scanning calorimeter (DSC), X ray diffraction (XRD) and micro hardness tester. The mass concentration of P in Ni P electroless coating is 9.72%, while that in the composite coating of Ni P/Au is 9.29% and that of Au in the composite coating is 0.93%. The hardness of the composite coating is bigger than that of Ni P alloy coating. The composite coating of Ni P/Au has good protection on the substrate because of its compact structure and less holes.