Influence of Plasma Dynamics on Material Synthesis Product of IPD Process

In the present work we discuss recent studies concerning plasma dynamics influence on the material synthesis product of the impulse plasma deposition process. Conditions favourable for evaluation of the Rayleigh-Taylor instability on the current sheet surface were found during the computational studies of plasma movement in the coaxial accelerator. Appearance of this phenomenon explains non-uniform phase composition and morphology of coatings. By modifying the design of the plasma accelerator, we succeeded in reducing substantially Rayleigh-Taylor instability and in obtaining α-Al$\text{}_{2}$ O$\text{}_{3}$ coatings instead of common γ-Al$\text{}_{2}$O$\text{}_{3}$.