Detonation Spraying of Copper Pretreated with High-Energy Impacts
A. E. Chesnokov1, A. V. Smirnov1, I. S. Batraev2, T. M. Vidyuk1
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Lavrentyev Institute of Hydrodynamics, Novosibirsk, Russia
Keywords: detonation spraying, copper coatings, high-energy planetary mill, microhardness, coherent scattering region, X-ray phase analysis
Abstract
Copper powder spraying is under study: the PMS-1 original copper, the copper that is mechanically treated 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 complex. The microhardness of coatings HV0.1, obtained from original and mechanically treated copper powders, increases from 110 to 160 and from 150 to 185, respectively, and the microhardness of coatings from the spheroidized powder is HV0.1=165. An X-ray phase analysis is carried out, and the resulting data indicate that, during the spraying, the copper oxide is partially reduced.
|
