ABSTRACT

In the present study, Al/Fe core–shell particles were successfully synthesised by electroless deposition of iron on aluminium particles. The process variables were investigated and optimised to achieve maximum deposition efficiency. These variables, including chemical composition parameters (molar ratios of salt/reducing agent, salt/complexing agent and pH) and process parameters (particle size, temperature and time) were optimised by using the Taguchi method. The chemical composition of iron deposited aluminium particles, their morphology and coating quality were characterised by helium gas pycnometry, scanning electron microscopy, energy-dispersive spectroscopy and X-ray diffraction. The results revealed that, by using the optimised bath chemical composition and optimised process parameters, a maximum of 28.91% iron deposition on aluminium particles can be obtained within 20 min.

摘要

在本研究中，通过在铝颗粒上无电沉积铁成功合成了 Al/Fe 核壳颗粒。对工艺变量进行了研究和优化，以实现最大的沉积效率。这些变量，包括化学成分参数（盐/还原剂、盐/络合剂的摩尔比和 pH 值）和工艺参数（粒度、温度和时间）通过使用田口方法进行优化。通过氦气比重瓶、扫描电子显微镜、能量色散光谱和X射线衍射对铁沉积铝颗粒的化学成分、形貌和涂层质量进行了表征。结果表明，通过使用优化的镀液化学成分和优化的工艺参数，最多可达到 28 个。