Mechanosynthesis of Cu–Fe3C Nanocomposites Using Liquid Hydrocarbon
M. A. EREMINA, S. F. LOMAEVA, E. P. ELSUKOV, A. L. ULYANOV and A. A. CHULKINA
Physical-Technical Institute, Ural Branch of the Russian Academy of Sciences, Ul. Kirova 132, Izhevsk 426000 (Russia)
E-mail: mrere@mail.ru
Keywords: mechanical alloying, nanocomposites, copper, cementite
Pages: 585–592
Abstract
Features of the formation of macro and microstructural state and the phase composition of Cu–30 vol. % Fe3C nanocomposites obtained by mechanical alloying of copper and iron powders in the liquid source of carbon (xylene) followed by thermal treatment were studied by means of X-ray phase analysis, Mцssbauer spectroscopy, scanning electron and optical microscopy, measurement of dynamic magnetic susceptibility. It was demonstrated that iron carbides are not formed during alloying; however, for the alloys obtained by grinding for 96 h, annealing at a temperature above 500 °С leads to the formation of cementite with the volume fraction of about 30 %. The grain size of the copper matrix of this composite is 10 nm, while after annealing at 800 °С it is 30 nm.
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