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Perm’, Russia

Gilev V.G.,ZAO Novomet Perm | Morozov E.A.,Perm National Research Polytechnic Institute | Rusin E.S.,Perm National Research Polytechnic Institute | Khanov A.M.,ZAO Novomet Perm
Russian Journal of Non-Ferrous Metals | Year: 2015

The results of studying the microstructure and microhardness of ring lugs on discs made of a steel–copper pseudoalloy after laser thermal treatment using a fiber laser with a power of 1 kW are given. It is revealed that the partial melting region in which melting occurs in the volumes of the low-melting component (copper) in the initial structure and contacting segments of steel matrix is formed in the material in addition to the total melting zone. Then the quenching zone from the solid state follows, in which the maximal hardness up to 1000 HV is attained for best samples in the volume of martensite, which is formed in perlite colonies of the initial steel–copper material. © 2015, Allerton Press, Inc.

Kichigin V.I.,Perm State University | Perel'man O.M.,ZAO Novomet Perm | Rabinovich A.I.,ZAO Novomet Perm | Bezmaternykh N.V.,ZAO Novomet Perm | Koshcheev O.P.,ZAO Novomet Perm
Protection of Metals and Physical Chemistry of Surfaces | Year: 2011

The application of polarization and impedance measurements to determine the corrosion rate of porous materials and those infiltrated with copper, produced by powder metallurgy, in neutral chloride electrolyte is examined. The determination of the corrosion rate of porous powder materials per true surface area in view of their heterogeneity is described. © Pleiades Publishing, Ltd., 2011.

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