The article presents the results of experimental studies of the parameters of micro-sized metal particles and sprayed films obtained by the method of electric explosion of metallic conductors (EVP) and electro-explosive spraying (EVN), respectively. Copper (Cu) and aluminum (Al) metal wires were used as explosive conductors. Geometrical parameters and physicochemical analysis of the obtained microparticles and thin films were carried out by means of the universal two-beam electronic system Versa 3D. From the analysis of the obtained samples of sprayed thin films and fine particles, it follows that with a discharge current density J≈10 ^ 10 A / m ^ 2 millisecond, the film thickness and particle sizes can reach values less than micron scale.
Keywords: electrical explosion of conductors, thin metal films, fine particles
The article presents the results of experimental studies of the parameters of micro-sized metal particles and sprayed films obtained by the method of electric explosion of metallic conductors (EVP) and electro-explosive spraying (EVN), respectively. Copper (Cu) and aluminum (Al) metal wires were used as explosive conductors. Geometrical parameters and physicochemical analysis of the obtained microparticles and thin films were carried out by means of the universal two-beam electronic system Versa 3D. From the analysis of the obtained samples of sprayed thin films and fine particles, it follows that with a discharge current density J≈10 ^ 10 A / m ^ 2 millisecond, the film thickness and particle sizes can reach values less than micron scale.
Keywords: electrical explosion of conductors, thin metal films, fine particles
The article focuses on the brief analysis of existing measuring devices of parameters of shock-wave processes include, in particular, electrical discharge in condensed medium. Conversion coefficients for calculation of amplitude of pressure of a shock-acoustic wave were found by means of mathematical modeling of the physical process happening in the piezoceramic pressure transducer when pulse mechanical loading influences on it on the assumption of absolute sharp border. The results of the calibration of the linear module of piezoceramic pressure transducers in the transmission condensed medium in the blasting chamber using a drop weight method are described.
Keywords: pulsed electric discharge, electric explosion of conductor, calibration of piezoceramic pressure transducer, a drop weight method