Hybrid HVOF and High Power Plasma Spray Gun Coating Advancements for Aero and Land Based Gas Turbine Engine Applications

Advancements in Hybrid HVOF and High Power Plasma Spray technologies enable improved coating properties, reduced costs, and increased productivity.   AMT AG (Dottingen, Switzerland) has designed a new hybrid HVOF gun that operates not only as a conventional HVOF gun with either gaseous or liquid kerosene fuel, but also with any liquid-gas fuel combinations.   Thermal barrier coating (TBC) duplex bond coatings are able to be produced with a dense coating at the turbine blade interface and a rough bond coating for subsequent ceramic TBC top coating.   

AMT AG has designed a new high power air plasma spray (APS) gun based on decades of experience based on a high power plasma gun used in vacuum plasma spray (VPS). Coatings will be produced using both the Hybrid HVOF (HV200) as well as the High-Power Plasma (F5000) guns.   An abbreviated design of experiments will be performed to examine coating properties as a function of spray parameters.