Formation of Cold and Detonation Sprayed Coatings from TiB2-Cu Nanocomposite Powders Produced by Mechanical Milling
O. I. Lomovsky1, D. V. Dudina1, V. Yu. Ulianitsky2, S. B. Zlobin2, V. F. Kosarev3, S. V. Klinkov3, M. A. Korchagin1, I. A. Rozhkov1, D.-H. Kwon4, J.-S. Kim4 and Y.-S. Kwon4
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences,
Ul. Kutateladze 18, Novosibirsk 630128 (Russia)
E-mail: dudina@solid.nsc.ru
2Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentieva 15, Novosibirsk 630090 (Russia)
3Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences,
Ul. Institutskaya 4/1, Novosibirsk 630090 (Russia)
4Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan,
San-29 Moogu-2 Dong, Namgu, Ulsan 680-749 (South Korea)
Pages: 197-201
Abstract
Microstructure development of TiB2-Cu nanocomposite powders during cold and detonation spraying was investigated. The powders were produced by self-propagating high-temperature synthesis (SHS) followed by mechanical milling. A computer model was developed to calculate the temperatures during detonation spraying. The change in the nanostructure of the powders during spraying was studied: due to low temperatures in cold spraying the size of TiB2 particles in the coatings was well retained, in detonation sprayed coatings the growth of the particles was observed, the mode of spraying affecting the microstructure and the size of the particles.
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