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11.
Agapov N. Averichev S. Donyagin A. Eliseeva I. Karpunina I. Khodzhibagiyan H. Kovalenko A. Kuznetsov G. Kuzichev V. Moritz G. Muehle C. Nikitaev P. Starikov A. 《Applied Superconductivity, IEEE Transactions on》2002,12(1):116-119
Two new prototype dipole magnets for the proposed new fast cycling (f=1 Hz) synchrotron at GSI in Darmstadt have been designed, fabricated and tested. The magnets are based on a window frame iron yoke cooled by liquid nitrogen and a superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow at T=4.5 K. The cold mass of the magnet is separated from the yoke by a small vacuum gap of 0.75 mm to 2.5 mm. A decrease of ac power losses by a factor of 2.3 in comparison with a standard Nuclotron dipole is obtained. The design features of two prototype dipoles as well as the test results are presented. 相似文献
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The distribution of interstitial impurities between liquid lithium and solid titanium-alloyed vanadium is investigated. It is shown that titanium alloying of vandium intensifies nitrogen and carbon transport from lithium into the solid metal. At the same time, the concentration of oxygen in the surface layers of the specimens increases as a result of penetration of lithium and formation of complex oxides of the Me
x
Li
y
O
z
type. Increase in the titanium content leads to an increase in the carbon concentration on the surface and to the formation of protective carbon films that inhibit the diffusion of interstitial impurities into deep-seated layers.Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, L'viv. Translated from Fiziko-Khimicheskaya Mekhanika Materialov, Vol. 29, No. 5, pp. 56–60, September–October, 1993. 相似文献
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Sholokhova A. Yu. Shashkov M. V. Eliseeva T. V. Buryak A. K. 《Protection of Metals and Physical Chemistry of Surfaces》2020,56(1):44-48
Protection of Metals and Physical Chemistry of Surfaces - The occurrence of side chemical reactions during regeneration of the highly basic anion exchanger AB-17-2P with adsorbed vanillin with an... 相似文献
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We present a systematic survey of the mechanisms of interaction of solid metals (Me) with melts (L) taking into account the activity of nonmetallic impurities (I) and suggest a general scheme of interaction of components in Me–L–I systems. The physicochemical aspects of formation of different layers on the Me–L phase boundary are analyzed. Special attention is given to the conditions of formation of protective layers with various functional properties. It is shown that this problem can be solved theoretically within the framework of the problem of reaction-controlled diffusion by taking into account the behavior of the concentrations of the components on the phase boundaries. 相似文献