An Investigation on the Optimization, Reliability and Repeatability Assessment of Plasma Spray Coatings Deposited Using Twin Opposing Injectors

Plasma-spray injection conditions have a major effect on particle properties and thus the characteristics of deposited coatings. In this investigation, opposing particle streams were injected into a plasma jet and the effect of different configurations and injection parameters was systematically studied. First- and second-order process maps were constructed from particle diagnostic data and in-situ beam curvature measurements, which served to guide optimization efforts.