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1.
E. S. Chernikova I. I. Timofeeva I. V. Uvarova A. I. Bykov V. V. Skorokhod V. P. Smirnov 《Powder Metallurgy and Metal Ceramics》1998,37(5-6):265-269
This paper describes the mechanical alloying of Ti and C powders by intensive grinding in a planetary mill. The effect of
milling conditions and initial composition on the compositional homogeneity and properties of powders and samples consolidated
by hot-pressing was studied by x-ray diffraction, scanning electron microscopy, and surface area measurement. The diffraction
patterns indicated that a powder mixture ground for 24 hours transforms to TiC after sintering for only one minute at 600°C
under a pressure of 3 GPa.
Materials Science Instiute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 5–6, pp.
32–38, May–June, 1998. 相似文献
2.
A. V. Inyushkin A. N. Taldenkov S. Yu. Shabanov L. N. Dem'yanets T. G. Uvarova 《Journal of Superconductivity and Novel Magnetism》1994,7(2):331-335
We present precise measurements of in-plane thermal conductivity for superconducting single crystals of YBa2Cu3O7?x (YBCO) withT c =92 and 60 K, Bi2Sr2CaCu2O8 (BSCCO), and of Zn-doped YBCO. Magnetization and thermal conductivity data obtained with the same 90-K YBCO crystal demonstrate a close relationship between the magnetic thermal resistivity and the internal magnetic fieldB in a superconductor in the mixed state. For all superconductors studied here, the magnetic thermal resistivity is a sublinear function of magnetic field. The origins of the nonlinearity are discussed. Angular dependences of the magnetic thermal resistivity have been shown to depart from the anisotropic 3D superconductor model and are in quantitative agreement with a quasi-2D model. Implications for spatial modulation of the order parameter are made. 相似文献
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M. M. Sirotyuk S. G. Ponomarchuk I. B. Vinnik I. V. Uvarova 《Powder Metallurgy and Metal Ceramics》1998,37(3-4):161-164
A comparative analysis of various sintered materials based on cryochemical powders was carried out. The electrical resistance
of compacts of pure aluminum oxide and its mixtures with CoO, MgO, ZrO2, and Y2O3 were compared with data on the specific surface area, phase composition, and pore size distribution in the sintered ceramics.
Conclusions were drawn about the suitability of the materials as humidity sensors. Highest sensitivity was found in sensors
based on aluminum—cobalt spinel, and aluminum—magnesium spinel mixed with zirconium oxide.
Deceased.
Materials Science Institute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 3–4(400),
pp. 39–43, March–April, 1998. 相似文献
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V. A. Uvarova S. V. Khlyst R. M. Rozhenok L. V. Artyukhina 《Measurement Techniques》2007,50(7):782-787
The problems that arise in comprehensive automation of production are considered. Characteristics are given and examples are
provided of intellectual measurement provisions and control, information measurement systems, and software/hardware suites
used in enterprises of the chemical, mining, petrochemical, metallurgical, and oil processing industries. A version of implementing
a system for production management is demonstrated.
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Translated from Izmeritel’naya Tekhnika, No. 7. pp. 59–62, July, 2007. 相似文献
9.
O. V. Stepanova I. V. Uvarova V. P. Smirnov I. I. Timofeeva A. A. Rogozinskaya 《Powder Metallurgy and Metal Ceramics》2005,44(9-10):451-454
Using x-ray diffraction analysis and electron-probe microanalysis, we have studied TiC coatings obtained by chemical vapor deposition, where the base and subsequently the coating have undergone magnetic abrasive finishing. We have found that treating the base before the coating is deposited prevents an η phase (Co6W6C) from forming in the surface layer of coated platelets. Magnetic abrasive finishing (MAF) has been found to cause an α → β transition in the cobalt phase. 相似文献
10.