Abstract
The size and morphology of cobalt oxalate powders are the keys to metal cobalt powder production. Spheroidic and fine cobalt oxalate powders were prepared by conventional precipitation when a pulsed electromagnetic field (PEMF) was introduced. The phase structures of the produces were characterized by means of X-ray powder diffraction (XRD). Scanning electron microscopy (SEM) images were used to observe the morphologies of the cobalt oxalate powders. Thermal analyses were performed using TG–DSC thermogravimetric analyzer. Meanwhile, a possible mechanism was proposed based on the interaction between pulsed electromagnetic field and cobalt oxalate cluster.
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