in this study, hydroxyapatite was coated on titanium substrates by plasma spraying process. a well-known porous and lamellar microstructure was found in the lateral and outer surface of coating. the phase composition was studied by xrd and the morphological and the microstructural aspects were investigated by scanning electron and optical microscopy. the hardness of coatings and substrates was ...

Multi-electrode plasma torches are becoming increasingly popular in the thermal spray community due to their good stability and high power plasma jet even when operated with inert gases. Currently the models in use feature either three cathodes and a single anode or three individual anodes connecting to a single cathode. The motivation for development of these plasma torches is based on the inh...

A vacuum microplasma spray system, operating on gross power levels of 1-3 kW, with powder feed rates below 1 g/min and using plasma gas mixtures of argon and hydrogen, was built and tested. In order to improve the deposition efficiency and quality of coatings, the system was analyzed and the matter of particle entrainment into the plasma jet core was identified as a critical sub-process. Partic...

The directions of research in the development process plasma spraying material are substantiated. theoretical basis for improving technology spraying.