Ag Powder Production Using Wire Arc Spray Technique

Abstract

The purpose of this research is to identify the optimal condition of the wire arc spray technique equipped with the gas atomization system using central composite design (CCD) of response surface methodology (RSM) in Minitab 18 software. Two independent parameters of the wire arc spray technique were studied, including arc voltage and air pressure. The statistical evaluations showed that both arc voltage and air pressure parameters had effects on the quality of the powder in terms of particle morphology and particle size distribution. Additionally, the arc voltage had the highest effect on particle circularity, whereas air pressure had the highest effect on particle size distribution. Finally, the optimal condition was the arc voltage and air pressure of 36.7429V and 0.5436 MPa, respectively, achieving a maximum particle circularity of 0.8284 and a targeted particle size distribution of 45 μm with the desirability of 0.7566 and 0.9928, respectively.