Synthesis of Cubic Co Micro/Nano Powders by Mechanism-Chemical Method: The Influence of Reaction Complex and Mechanical Force

Abstract

Abstract. Cermet material is widely used in manufacturing, military and other fields. Co is a key component for cermets material, and can improve the strength and toughness of cermets because of its excellent ductility. Micro/nano structured spherical cubic-Co powder is the best structure for cermet with its special properties and internal structure. In this study, Oxalic acid and cobalt nitrate are used as raw materials to prepare cobalt oxalate Using mechanical solid-phase chemical reaction and thermal decomposition, a single phase spherical β-Co powder of around 200nm stable at room temperature is prepared. This study focuses on researching the interaction mechanism of the cobalt oxalate powders with the interaction of mechanical force, and the influence of reaction complex on the structure of Co powders.