Physical and Chemical Properties of Secondary Powder Beryllium Bronze BrB2, Obtained by Electroerosion in Water

The purpose of this study was to study the physical properties (particle shape, size, specific surface area, granulometric composition), as well as the elemental composition of the powder obtained by electroerosion of conductive waste of beryllium bronze BrB2 in distilled water.

Methods. Beryllium bronze waste BrB2 was processed into powders at an experimental electroerosive dispersion plant in distilled water. The tasks set in the work were solved using modern equipment and complementary methods of physical materials science, including: grain composition and average particle size (laser particle size analyzer "Analysette 22 NanoTec"); shape and morphology of the particle surface (scanning electron microscope (SEM) "Quanta 200 FEG"); chemical composition (energy dispersive X-ray analyzer of the company "EDAX", built into the SEM "Quanta 600 3D".

Results. Based on the conducted experimental studies aimed at studying the physical properties and elemental composition of the powder obtained at the experimental installation by electroerosion of beryllium bronze waste BrB2 in an aqueous medium, the high efficiency of the use of electrodispersion technology, which provides, at low energy costs, the production of a new beryllium bronze powder suitable for industrial use, is shown. The following characteristics of powder materials obtained by electrodispersing beryllium bronze waste in distilled water have been experimentally established: the shape of the powder particles is spherical and elliptical, fine particles form agglomerates; particle sizes from 0.1 to 100 microns; the volumetric average diameter of the particles is 23 microns; the specific surface area is 0.19 m²/g, the main elements are Cu, Be, Ni, Fe, Si, and Al.

Conclusion. The conducted research on the production of a new electroerosive powder of beryllium bronze BrB2 and the study of its properties will allow for a consistent transition to advanced production technologies and materials through the use of promising, harmless to humans and the environment, low-tonnage and waste-free technology of electroerosive dispersion.

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