عنوان مقاله [English]
In this research, precipitation method using Ca(NO3)2 and HF as the primary materials were applied for synthesis of calcium fluoride nanopowder. Subsequently, Taguchi method was utilized for determining the optimum conditions for synthesizing CaF2 nanopowders with minimum particle size. The experimental conditions were studied in the range of 30-75 oC for temperature, 300-800 rpm for stirring speed, 7-10 for pH, 1-4 for super saturate and 1-1.75 for stiochiometry degree. Orthogonal array (OA) L16 consisting of five parameters each with four levels, was chosen. The optimum conditions for synthesizing the calcium fluoride with the smallest particle size was achieved as temperature (30 oC), stirring rate (800 rpm), pH (10), super saturate (4) and stiochiometry degree (1.25).