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Tantalum metallurgy

G. L. Miller, Metallurgy of the Rarer Metals—6 Tantalum and Niobium Butterworths Scientific Pubheations, London, 1959. [Pg.30]

In summary, investigations in the area of the chemistry of tantalum and niobium fluoride compounds will advance tantalum-niobium metallurgy and promote the development of new materials for modem applications. [Pg.10]

The monograph will be useful for tantalum and niobium producers, for researchers studying the chemistry of fluorides, and for teachers and students at chemistry and metallurgy departments. [Pg.398]

But first the synthesis had to come John was interested in reduced metal halides, particularly for the post-transition metals cadmium, galHum, and bismuth (his Ph.D. dissertation was on anhydrous aluminum halides and mixed halide intermediates, a good start for what was to come ). However, he was not yet actively interested in rare-earth metals and their remarkable solubility in their halides. But these elements lured him one floor below where Adrian Daane headed the metallurgy section of Spedding s empire. He knew how to produce rare-earth metals with high purity and in sufficient quantity and also how to handle tantalum containers. What if one gave it a tr/ and reduced some rare-earth metal halides (John insists that this term is used correctly) from their respective metals at high temperatures under appropriate conditions. [Pg.339]

C. K. Gupta, Extractive Metallurgy of Niobium, Tantalum and Vanadium, Int. Metals Reviews, Vol. 29,... [Pg.456]

In preparing solid platinum from its powder, Wollaston foreshadowed modern methods of powder metallurgy, by which the powders of refractory metals, such as tungsten, molybdenum, tantalum, and columbium, can be fabricated into useful articles (84, 86). [Pg.426]

In metallurgy, niobium is classified as a refractory metal, along with tungsten, tantalum, and molybdenum. A comparison of the four metals is given in the accompanying table. [Pg.1075]

The use of solvating extractants in the recovery of gold and platinum-group metals (PGM) was described in the previous section. These extractants have also found some specialized applications in the extractive metallurgy of base metals. For example, they have been used in the recovery of uranium, the separation of zirconium and hafnium, the separation of niobium and tantalum, the removal of iron from solutions of cobalt and nickel chlorides, and in the separation of the rare-earth metals from one another. [Pg.810]

Powder metallurgy techniques have been used to produce a very wide range of compacts containing molybdenum disulphide in such metals as mixed iron-palladium, iron-platinum , tantalum , iron-tantalum , molybdenum-tantalum , and molybdenum-niobium . The concentration of molybdenum disulphide in these compacts has risen to 90% compared with less than 35% in earlier materials. Composites containing nickel were found to be unsatisfactory because of high friction and wear. [Pg.228]

Borovinskaya, I. P, Merzhanov, A. G., Pityulin, A. N., and Shehtman, V. S., Self-propagating high-temperature synthesis of the tantalum nitride. In Combustion Processes in Chemical Engineering and Metallurgy (Russ.). (A. G. Merzhanov, ed.). USSR Academy of Science, Chemogolovka, Russia, 1975a, p. 113,... [Pg.211]

Calcium is utilized in the manufacture of special metals such as zirconium, thorium, uranium and the rare earths, as a refining agent in metallurgy (steel, copper, magnesium, tantalum, lead) and in the manufacture of calcium hydride (hydrogen source). [Pg.238]

Among the pentavalent elements, the most important are niobium and tantalum. Niobium is an excellent material for surface treatment of steel materials for chemical industry due to its high hardness and corrosion-resistance in wet acidic conditions. Nowadays, niobium is also used for the preparation of superconductor tapes and it is used in other branches of industry, for instance in nuclear technology and metallurgy. Tantalum is also of similar importance. For these applications, it is necessary to prepare high purity metal. Molten salt electrolysis, as an alternative process to classical thermal reduction, provides niobium and tantalum with required quality. In order to optimize these processes, it is necessary to know details of both complex formation and redox chemistry of the species present in the melts. [Pg.47]

S., A mass-spectrometric investigation of the evaporation of molybdenum and tantalum diselenides, Sov. Powder Metallurgy Met. Ceram., 15, (1976), 866-868. Cited on pages 345, 346, 351, 544. [Pg.731]

Tews, J. L. and Sherman, L. M. Recent Developments in Separating Tantalum and Niobium by Solvent Extraction. Symposium on Columbium (niobium) of the Electrothermics and Metallurgy Division of the Electrochemical Society, Washington, D.C. 16 and 17 May 1957. [Pg.191]

Konstantinov, V.I. (1977) Electrolytic production of tantalum niobium and their alloys. Metallurgy, Moscow. [Pg.203]

Gerasimov et al. ° have prepared four volumes on chemical thermodynamics in non-ferrous metallurgy. A volume on tungsten, molybdenum, titanium, zirconium, niobium, and tantalum and their more important compounds has been translated into English. ... [Pg.75]


See other pages where Tantalum metallurgy is mentioned: [Pg.780]    [Pg.829]    [Pg.355]    [Pg.780]    [Pg.829]    [Pg.355]    [Pg.181]    [Pg.126]    [Pg.300]    [Pg.273]    [Pg.781]    [Pg.350]    [Pg.158]    [Pg.181]    [Pg.350]    [Pg.606]    [Pg.348]    [Pg.606]    [Pg.92]    [Pg.257]    [Pg.180]    [Pg.115]    [Pg.360]    [Pg.2085]    [Pg.598]    [Pg.303]    [Pg.145]    [Pg.708]    [Pg.3]    [Pg.171]   
See also in sourсe #XX -- [ Pg.355 ]




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