Preparation of Nano-fcc Structure Co Powders by High Speed Ball Milling

Abstract:

High-energy ball mill of a mixture of H₂C₂O₄·2H₂O, Co (NO₃)₂·6H₂O(A.R) has been used to produce nanocrystalline cobalt oxalate powders of nearly spherical shape. After the CoH₂C₂O₄·2H₂O powders have been dispersed by spray-drying, it has been decomposed at 400~550°C to obtain cobalt powders. The microstructure of the powders produced using ball milling and thermodynamical analysis for reaction and decomposition temperature have been studied. The powders were characterized by X-ray Diffraction, Scanning Electron Microscopy. It has been identified that a spherical, fcc structure, 100nm β-Co powders was synthesized.

• Periodical: Advanced Materials Research (Volume 803)
• Pages: 308-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.803.308
• Online since: September 2013
• Authors: Ying Deng, Xiang Xiong, Yan Hua Zhang, Ling Ling Peng
• Keywords: FCC Structure Cobalt Powders, High-Speed Ball-Milling, Nano-Crystalline Materials, β-CoC₂O₄·2H₂O Powders

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