Data from: Fabrication and characterization of Ni-decorated h-BN powders with ChCl-EG ionic liquid as addition by electroless deposition

Electroless plating nickel particles on hexagonal boron nitride (h-BN) of ceramic powders are investigated in this paper. As comparison, the different additive concentration of choline chloride-ethylene glycol (ChCl-EG) ionic liquid (0g/L, 30g/L, 60g/L, 90g/L) is presented. The effects of ChCl-EG concentration are studied, including the surface morphologies, phase analysis of Ni-decorated h-BN powders, and the residual Ni2+ concentration is measured in electroless plating bath. It is demonstrated that the deposition phenomena of nickel particles on h-BN surface is changed with the addition of ChCl-EG. When the concentration of ChCl-EG is 30g/L, the Ni particles on h-BN surface are in dispersed and spheroid state with the average size of 10-1000nm. It can be found that 30g/L ChCl-EG is conducive to the arise of deposition phenomena, which is the formation of the single nickel particle on h-BN surface. Besides, more Ni particles are deposited on h-BN surface with the increase of plating nickel times, which is characterized with scanning electron microscope (SEM) and transmission electron microscope (TEM). Furthermore, the deposition phenomenon and growth mechanism are proposed without and with ChCl-EG as additive to further elaborate the formation of Ni particles on h-BN surface.本文针对陶瓷粉末六方氮化硼（h-BN）表面负载化学镀镍颗粒展开研究。为开展对照实验，设置了不同浓度的氯化胆碱-乙二醇（ChCl-EG）离子液体添加剂（0g/L、30g/L、60g/L、90g/L）。本文探究了ChCl-EG浓度对镍修饰h-BN粉末的表面形貌、物相分析的影响，并对化学镀液中残留的Ni²+浓度进行了测定。研究结果表明，添加ChCl-EG会改变h-BN表面镍颗粒的沉积行为。当ChCl-EG浓度为30g/L时，h-BN表面的镍颗粒呈分散球状分布，平均粒径为10~1000nm。可发现30g/L的ChCl-EG可有效促进镍颗粒沉积，使h-BN表面形成单一分布的镍颗粒。此外，随着化学镀次数增加，h-BN表面沉积的镍颗粒数量增多，该结果通过扫描电子显微镜（SEM）与透射电子显微镜（TEM）进行了表征。进一步地，本文分别提出了无添加剂与添加ChCl-EG时的沉积行为与生长机制，以进一步阐明h-BN表面镍颗粒的形成过程。