U Uranium

Abstract

This work is subject to copyright. ALL rights are reserved, whether the whoLe or part of the materiaL is concerned, specifically those of translation, reprinting, reuse of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. Under §54 of the German Copyright Law where copies are made for other than private use, a fee is payabLe to "VerwertungsgeseLLschafl Wort", Munich. © by Springer-VerLag Berlin HeideLberg 1989 Originally published by Springer-Verlag Berlin Heidelberg New York in 1989. Softcover reprint ofthe hardcover 8th edition 1989The use of registered names, trademarks, etc., in this publication does not impLy, even in the absence of a specific statement, that such names are exempt from the reLevant protective laws and regulations and therefore free for general use. PrefaceThe present voLume describes the alloys and the intermetaLLic compounds of uranium with the main group metaLs -those systems with semimetaLs such as boron and germanium are to be found in corresponding voLumes in uranium C series. In this voLume, main emphasis is given to the binary systems. Ternary systems are onLy deaLt with if there is formation of specific compounds or if there are other important characteristics or reactions. In generaL, the influence of small quantities of a third metaL on a system U-M, e.g., for mechanicaL properties or corrosion effects wiLL not be discussed in order not to extend this voLume excessiveLy.The ternary alloys are described immediateLy after the reLated binary systems. E. g., U-Ga-Ni is found after U-Ga, unLess a pLace after U-Ni couLd be imaginabLe from more systematic reasons (system of the Last position). The preferred order is aLso indicated in the sequence of eLement symboLs within the formuLas of compounds and systems: The compounds/systems reLated to U -AL are written as U -AL -M, etc.The behavior of uranium metaL towards the main group metaLs can be divided into two groups:Practically no soLubility in each other and no compound formation. This is the case for the aLkali and aLkaLine earth systems (except beryllium).OccasionaL formation of severaL compounds with Limited or extensive solid soLubility. This is observed for beryllium and the metaLs of third and fourth main group.The most frequently investigated systems are uranium -beryllium and uranium -aLuminium because of their speciaL scientific (U-Be) and technoLogicaL (U-AL) importance. UBe13, the onLy compound in the binary U -Be system, is one of the very few heavy-fermion compounds. Therefore, its physicaL properties especially were extensiveLy and thoroughLy studied in recent years. This GmeLin voLume gives a compLete and very detailed description of this compound, and at the time of publication, the most updated one.On the other hand, cermets and alloys in the U-AL system are very important as fueL, especially for the high-neutron-fLux nucLear research reactors. This fueL is mainLy based on 235U-enriched uranium on the aLuminium-rich side of the U -AL system, e. g., as UAL 4 ...

Diffusion, Thermal Properties and Chemical Compatibilities of Select MAX Phases with Materials For Advanced Nuclear Systems

“…Ganesan et al 30 also found the post-exposure weight losses for the annealed samples, under static Na, were less than those reported in dynamic Na environments. 31 The weight loss in the annealed samples was also seen to be less than the 20% found in cold worked 316 stainless steel samples. 32,33 As with Suzuki et al 28 the σ-phase was found to nucleate near the exposed surfaces.…”

Vanadium and Vanadium Compounds

“…In the United States, in the late 1960s, a large-scale development program on vanadium alloys was undertaken by the Atomic Energy Division at Westinghouse. Wide-ranging cooperative research projects in the Federal Republic of Germany in 1964 -1971 are reported in [31], [50], [51]. A comprehensive review of these developments can be found in [7].…”

“…The behavior of vanadium and its alloys in contact with lithium and sodium is described in [11], [51]. The effect of irradiation by neutrons on the strength properties of vanadium and its alloys is described in [52].…”

Kohlenstoffaustausch zwischen Stahl und Natrium als Korrosionserscheinung

“…Die Tatsache, dal3 Kohlenstoff mit Natrium nur die instabile Verbindung Nap22 bildet, ist der Grund fur eine hohe chemische Aktivitat des gelosten Kohlenstoffs, der sich wie das geloste Element verhalt [2]. Kohlenstoffgehalte in Natriumkreislaufen werden durch dieTemperatur der Kaltfalle beeinflufit, sie sind jedoch vie1 hoher, als der Sattigungskonzentration bei der Kaltfallentemperatur entspricht [3]. Stahle (3)…”