Affiliation:
1. Russian Academy of Sciences
2. Ulsan University
3. Siberian Branch of Russian Academy of Sciences
Abstract
TiB2-43vol.%Cu nanocomposite powders with titanium diboride particle size 50-100 nm
were cold and detonation sprayed in order to fabricate coatings on a copper substrate. The powders
were produced by self-propagating high-temperature synthesis (SHS) followed by mechanical
milling. The temperatures during spraying were calculated and the change in the nanostructure of
the powders during spraying was studied: in cold sprayed coatings the size of TiB2 particles was
well retained, in detonation sprayed coatings the growth of the particles was observed, the mode of
spraying greatly affecting the microstructure and the size of the particles. The hardness of cold
sprayed coatings was higher compared to detonation sprayed coatings. This research shows the
future potential for development of coatings with submicron and nanostructure by cold and
detonation spraying of powders produced by mechanical milling.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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