M. Friis et al., Investigation of particle in-flight characteristics during atmospheric plasma spraying of yttria-stabilized ZrO2: Part 1. Experimental, J THERM SPR, 10(2), 2001, pp. 301-310
A detailed investigation of the relationship between the parameters of the
spray process and the in-Right properties of the particles was carried out
using a multivariate statistical approach. A full factorial designed experi
ment concerning the spray process was performed, the spray gun parameters'
current, argon Row rate, hydrogen flow rate, and powder feed rate being sel
ected to control the process. The particle properties, viz velocity, temper
ature, and diameter, were determined using an optical measurement system, D
PV 2000, In addition, the standard deviations of, and the correlations betw
een, the measured particle properties were analyzed. The results showed cur
rent to have the strongest impact on particle velocity and particle tempera
ture and argon flow rate to be the only parameter with an inverse effect on
velocity and temperature.