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SM ISO690:2012 VARYUKHIN, V., KHIZHENKOV, P., MAKMAK, I., SIROTKIN, V., PANCHENKO, L.. Nano and Microparticles of Iron with a Modified Surface and Prospects for Their Application. Part I: Copper Coated Iron Particles. In: Surface Engineering and Applied Electrochemistry, 2011, nr. 5(47), pp. 399-402. ISSN 1068-3755. |
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Surface Engineering and Applied Electrochemistry | |||||
Numărul 5(47) / 2011 / ISSN 1068-3755 /ISSNe 1934-8002 | |||||
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Pag. 399-402 | |||||
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The catalytic properties of metal copper in chemical reactions between ferrite garnet materials and orthophosphoric acid are described. It was shown that the reactions occur more efficiently provided copper is used in the form of shells on nano and microparticles of iron and stirring of the etching agent is performed by the magnetic fields. The formation of the metal copper on iron particles is carried out using a chemical method owing to the reaction between the iron particles and the water solution of blue vitriol and
sulphuric acid. The highest efficiency of stirring is registered using a magnetic field with a variable direction of the magnetic field gradient.
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