Optimizing Parameters for Chemical Synthesis of Fe-B Alloy Nanoparticles by Taguchi Method

Subject Areas : journal of New Materials

S. SH ¹ , R. صراف ماموری ²

1 - دانشجوی دکتری، دانشگاه تربیت مدرس، دانشکده فنی و مهندسی، بخش مهندسی مواد، گروه سرامیک.
2 - دانشیار، دانشگاه تربیت مدرس، دانشکده فنی و مهندسی، بخش مهندسی مواد، گروه سرامیک.

Received: 2014-02-05 Accepted : 2014-02-05 Published : 2014-05-22

Keywords: Nanoparticles, Amorphous, chemical reduction, Fe-B alloy, Taguchi Method,

Abstract :

The aim of this work is to optimize the factors affecting amorphization in synthesis of Fe-B alloy nanoparticles through chemical reduction with iron sulfate hydrated (FeSO₄.7H₂O) as a source of iron and sodium borohydride (NaBH₄) as a reducing agent. Taguchi method with combined L₉ orthogonal array was implemented and amorphization degree was considered as the property to be optimized. Four effective factors were determined such as addition rate, reaction temperature, Fe²⁺ ions concentration, and pH in three levels. Analysis of variance (ANOVA) was carried out over the test results and the optimal condition was determined as, follows; adding rate: 5 mlit/min, reaction temperature: 10 °C, Fe²⁺ ions concentration: Addition of Solution at rate of 5 mlit/min, Reaction temperature 10 °C, Fe²⁺ ions concentration 0.1 mol/lit and reaction pH of 7. In the foregoing condition, the expected result was 96.7% and the confirmation test reached 100% amorphization degree. Moreover, Fe²⁺ ions concentration with 55.31% contribution percent was stated as the most effective factor.