Abstract Driven by the search for an optimum combination of particle velocity and process temperature to achieve dense hard metal coatings at high deposition efficiencies powder feed rates, high-velocity air-fuel spraying (HVAF) was developed. In terms achievable velocities temperatures, this can be classified between oxy-fuel (HVOF) cold gas (CGS). The particular advantages HVAF regarding mode...

A transpiration cooled flat plate configuration is investigated numerically by application of a 3-D conjugate fluid flow and heat transfer solver, CHT-Flow. The geometrical setup and the fluid flow conditions are derived from modern gas turbine combustion chambers. The plate is composed of three layers, a substrate layer (CMSX-4) with a thickness of 2 mm, a bondcoat (MCrAlY) with a thickness 0,...