DETONATION SPRAYING OF COPPER PRETREATED WITH HIGH-ENERGY IMPACTS

• Published in: Journal of applied mechanics and technical physics Vol. 61; no. 6; pp. 1042 - 1047
• Main Authors: Chesnokov, A. E., Smirnov, A. V., Batraev, I. S., Vidyuk, T. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2020; Springer Nature B.V
• Subjects: Applications of Mathematics; Classical and Continuum Physics; Classical Mechanics; Coatings; Copper; Copper oxides; Detonation; Diamond pyramid hardness; Fluid- and Aerodynamics; Mathematical Modeling and Industrial Mathematics; Mechanical Engineering; Physics; Physics and Astronomy; Planetary mills; Plasma jets; Powder spraying; Raw materials; Spheroidizing; copper coatings; detonation spraying; X-ray phase analysis; high-energy planetary mill; microhardness; coherent scattering region
• ISSN: 0021-8944; 1573-8620
• DOI: 10.1134/S0021894420060188

Copper powder spraying is under study: the PMS-1 feedstock copper, the copper that is mechanically milled in a high-energy planetary mill, and the copper that is also spheroidized in a plasma jet. High-density copper coatings are obtained using a CCDS2000 detonation facility. The Vickers microhardness of coatings
H
V
0.1
, obtained from feedstock and mechanically milled copper powders, increases from 110 to 160 and from 150 to 185, respectively, and the microhardness of coatings from the spheroidized powder is
H
V
0.1
=
165
. An X-ray phase analysis is carried out, and the resulting data indicate that, during the spraying, the copper oxide is partially reduced.