Thermal spraying of suspensions with submicron- and nanoscale particles is a promising way to deposit thin (10-50 µm) and finely structured coatings. To achieve dense and well adherent coatings, High Velocity Suspension Flame Spraying (HVSFS) is predominantly chosen whereas suspension plasma spraying (SPS) is capable to create coatings having higher porosity or even exhibit controllable columnar structures as favored for instance in TBC applications.
Modified torch for High Velocity Suspension Flame Spraying
Photo: IMTCCC - University of Stuttgart