Velocity and temperature distributions of alumina-titania in-flight particles in the atmospheric plasma spray process

Three processing parameters (arc current, primary and secondary plasma gas flow rates) were correlated to the characteristic distributions in the case of alumina-titania in-flight particles. A high speed two color pyrometer was used to measure, at the centre of the particle flow, individual in-flight particle characteristics, which were used to build velocity and temperature distributions. Results showed a change on characteristic distributions and demonstrated a significant effect of the energetic parameters in the control of the in-flight particle characteristics.