This paper describes the development of a high-velocity oxyfuel (HVOF) spray process optimized for hardfacing components in aircraft engines and industrial gas turbines. Experiments show that the new process can produce WC-CoCr coatings with near-net-shape, ultrasmooth as-sprayed surfaces, and improved erosion resistance. Information obtained through particle diagnostics and other analytical methods is presented, showing how different process parameters influence coating microstructures, surface morphologies, and physical and mechanical properties. With appropriate process settings, hardface coatings can be produced that require only a surface finishing step.

This content is only available as a PDF.
You do not currently have access to this content.