The study deals with sprayed atoms occurring as a result of interaction of hydrogen plasma with binary coatings. The work is aimed at development of the near-wall plasma diagnostics method based on the method of laser fluorescence spectroscopy of impurity atoms. A diagnostics complex of periphery plasma of fusion reactors is created. Composite materials erosion mechanism is studied, average velocities of outflow of titanium sprayed atoms are determinedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio