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Nikulin S.A.,National University of Science and Technology "MISIS" | Rozhnov A.B.,National University of Science and Technology "MISIS" | Nechaikina T.A.,National University of Science and Technology "MISIS" | Rogachev S.O.,National University of Science and Technology "MISIS" | And 2 more authors.
Russian Metallurgy (Metally) | Year: 2014

The prospects of estimating the quality of joining the layers of a three-layer pipe for the fuel claddings of a fast reactor from the results of a combined investigation, which includes computer-assisted quantitative metallography, microindentation, electron-probe microanalysis, and layer-by-layer atomic emission spectroscopy, are discussed. © 2014, Pleiades Publishing, Ltd. Source

Sinegribova O.A.,Mendeleev University of Chemical Technology | Sharkunova A.I.,Mendeleev University of Chemical Technology | Dvoryanchikova T.K.,Mendeleev University of Chemical Technology | Koparulina E.S.,OAO Chepetsk Mechanical Plant | Shtutsa M.G.,OAO Chepetsk Mechanical Plant
Theoretical Foundations of Chemical Engineering | Year: 2010

The concentration of tributyl phosphate (TBP) in an aqueous phase containing various amounts of HNO3 and zirconium after contact with 70% TBP in RED-3 was determined. It was found that the presence of nitric acid resulted in a decrease in the solubility of TBP in the aqueous phase, whereas the presence of zirconium facilitated the solubility of TBP. Upon the precipitation of zirconium hydroxide from the aqueous phase with ammonia, a portion of TBP was sorbed by the precipitate. To decrease the trapping of TBP, zirconium hydroxide should be precipitated with a solution of NaOH at pH 8. The TBP dissolved in the aqueous phase can be removed by repeatedly washing with the diluent. © 2010 Pleiades Publishing, Ltd. Source

Kotsar M.L.,All Russia Research Institute of Chemical Technology | Morenko O.G.,OAO Chepetsk Mechanical Plant | Shtutsa M.G.,OAO Chepetsk Mechanical Plant | Akhtonov S.G.,OAO Chepetsk Mechanical Plant | And 8 more authors.
Inorganic Materials | Year: 2010

The processes of obtaining high-purity titanium, zirconium, and hafnium by the method of thermal dissociation of iodides are discussed. The data on cleaning of the metals from impurities in glass and metal closed-type vessels are presented. The types of vessels used in industry and the conditions of raw stock pretreatment and iodide refining of titanium, zirconium, and hafnium are described. © 2010 Pleiades Publishing, Ltd. Source

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