Determination of optimum process condition for synthesis of CaF2 nanopowder by precipitation method with experimental design of Taguchi's method

Shahali, E.; Sarraf Mamoori, R.

doi:10.30501/jamt.2010.70147

Determination of optimum process condition for synthesis of CaF2 nanopowder by precipitation method with experimental design of Taguchi's method

Authors

E. Shahali

R. Sarraf Mamoori

University of Tarbiat Modares

10.30501/jamt.2010.70147

Abstract

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).

Keywords

Nanopowder

Calcium fluoride

Taguchi