Study of the generation of a weakly ionized medium for spraying of biocompatible coatings by two-stage pulsed plasma set

The paper is devoted to the experimental study of the generation of the weakly ionized high velocity heterophasic flows by gas detonation in acetylene-oxygen mixtures. Such flow can contain fine hydroxyapapite (HOA) particles with an average diameter of d_p ≤100 μm for spraying of biocompatible coatings. The characteristic velocity (≈2.3…2.5 km/s) and pressure (≈3.1…3.8 MPa) of the detonation waves were defined and the attenuation dependences of those parameters were stated. The structure of the detonation flows was visualized and the chemical composition was estimated. The samples of the HOA coatings (with a thickness of 80…100 μm) were prepared on the carbon nanocomposites and their properties were characterized by SEM, EDX and XRD. The possibility of the using of such flow as a working fluid for electromagnetic acceleration of HOA was offered by the two-stage pulsed plasma set. (paper)