Prediction of powder characteristics of uniform NiO precursor
prepared by homogeneous precipitation
prepared by homogeneous precipitation
(1. State Key Laboratory of Powder Metallurgy,
Central South University, Changsha 410083, China;
2. School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China)
Central South University, Changsha 410083, China;
2. School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China)
Abstract: Uniform NiO precursor particles were prepared by homogeneous precipitation in the presence of urea. Optimal discrimination plan, one of the chemical pattern recognition techniques, was applied to analyze the experimental data and the quantitative relationships among the process parameters and powder characteristics of the obtained particles were determined. It proves that the model fits well with the experimental results and it is quite effective to guide the process design. Based on the above results, an improved La Mer model and the reasonable formation mechanism of the particles are proposed.
Key words: chemical pattern discrimination; optimization and prediction; NiO precursor particle; homogeneous precipitation