Korolëv, Russia
Korolëv, Russia

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Vainer Y.A.,RAS Institute for Physics of Microstructures | Zorina M.V.,RAS Institute for Physics of Microstructures | Pestov A.E.,RAS Institute for Physics of Microstructures | Salashchenko N.N.,RAS Institute for Physics of Microstructures | And 6 more authors.
Journal of Surface Investigation | Year: 2015

The main problems of measuring the roughness of supersmooth surfaces for X-ray optics and an approach developed by us for the metrology and production of optical elements with diffraction-quality reflective surfaces are discussed. Up-to-date data on the roughness obtained upon the polishing of fused quartz are presented. © 2015, Pleiades Publishing, Ltd.

Logacheva A.I.,OAO Komposit
Russian Metallurgy (Metally) | Year: 2014

The problems of the application of granular metallurgy and subsequent hot isostatic pressing for increasing the mechanical properties and the functional characteristics of an intermetallic titanium nickelide-based (TiNi) shape memory alloy are considered. Hot plastic deformation is shown to be effective for the optimization of the structure of the granular alloy. The technology developed using the experimental results are tested to produce bushes, which are the key element of the shock-free separation lock joint used in space engineering. The results of mechanical tests of bush specimens demonstrate an advantage of the granular intermetallic TN-1 alloy over its analogs produced by the methods of traditional metallurgy followed by deformation. © 2014, Pleiades Publishing, Ltd.

Yartsev D.V.,National University of Science and Technology "MISIS" | Lakhin A.V.,OAO Komposit | Vol'fkovich Y.M.,RAS Frumkin Institute of Physical Chemistry and Electrochemistry | Bogachev E.A.,OAO Komposit | And 3 more authors.
Russian Journal of Non-Ferrous Metals | Year: 2010

Samples of a monolayer carbon-ceramic composite material (composite) of the C-SiC composition are obtained as a result of the compaction of porous substrates made of a thin carbonized carbon fiber-reinforced plastic based on one layer of a carbon cloth with silicon carbide deposited from the gas phase of methylsilane. At each step of preparation of this material, its density, porosity, and specific pore surface are determined by standard contact porosimetry. Based on the obtained distributions of the specific volume and specific surfaces of pores by their radii, changes in the porous structure of samples are considered. The necessity of high-temperature annealing as a technological step in making the composite leading to the disappearance of microporosimety within the composite is shown. The microstructure of the composite under study is also studied with the use of scanning electronic microscopy. © 2010 Allerton Press, Inc.

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