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'Tantalum' in keywords
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2001 (1)
1996 (1)
1995 (2)
1Author    S. Volkov, N. Tumanova, S. Kothetova, N. BuryakRequires cookie*
 Title    The Polysurface Mechanism of Ta and Ti Anodic Dissolution in Low-Temperature Carbamide-NH4CL Melt  
 Abstract    In this work the peculiarities o f the electrochemical dissolution of tantalum and titanium in carbamide containing low temperature melts were studied. 
  Reference    Z. Naturforsch. 56a, 761—763 (2001); received August 8 2001 
  Published    2001 
  Keywords    Carbamide, Tantalum, Titanium, Electrochemistry, Passivation 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0761.pdf 
 Identifier    ZNA-2001-56a-0761 
 Volume    56 
2Author    E. Peters, Hk Müller-BuschbaumRequires cookie*
 Title    Ein Titan-Tantaloxid mit Ti11: Ti0 ,3 3 Ta0 ,6 7O2 (TiTa20 6)  
 Abstract    Black single crystals o f Tio^Tao 670 2 have been prepared by C 0 2-LA SER techniques heating a mixture of TiO and Ta20 5 to T > 2000 °C. The titanium tantalum oxide crystallizes with tetragonaj symmetry, space group D 4 h -P 4 2/mnm, lattice constants a = 4.7344(6) A, c = 3.0504(2) A , Z = 2. Ti().33Ta0.67O 2 represents the compound TiTa20 6 with rutile structure because of the statistical distribution of Ti2+ and Ta5+. The composition of rutile-type com ­ pounds is discussed in more general terms. 
  Reference    Z. Naturforsch. 50b, 1167—1170 (1995); eingegangen am 16. Januar 1995 
  Published    1995 
  Keywords    Titanium, Tantalum, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1167.pdf 
 Identifier    ZNB-1995-50b-1167 
 Volume    50 
3Author    Ot, (.M = Niobium, Tantalum) B Wedel, Hk Miiller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie der Barium-Oxometallat-Tellurite: Ba2M6Te202i (M = Niob und Tantal) On the Crystal Chemistry of the Barium Oxometallate-Tellurites Ba-,M6Te  
 Abstract    Single crystals of Ba2Nb6Te20 2| (I) and Ba2Ta6Te20 2| (II) have been prepared by solid state reactions in air. X-ray investigations led to monoclinic symmetry, space group C 3h -C2/m, (I): a = 16.699(3), b = 5.671(2), c = 9.611(2) A, ß = 96.92(2), (II): a = 16.655(8), b = 5.667(2), c = 9.576(4) Ä, ß = 96.64(7), Z = 2. N b5+ or Tas+ show octahedral and Te4+ a one sided triangular coordination by O 2 -. The position and distance of the lone pair on Te4+ have been estimated by calculations of the Coulomb terms of the lattice energy. The polyhedron around Ba2+ may be described by a triply capped BaO^cube. The crystal structures are dominated by a ^ [Nb60 2l] l2~ network with incorporated Ba~+ and Te4+ ions. 
  Reference    Z. Naturforsch. 51b, 1411—1414 (1996); eingegangen am 28. März 1996 
  Published    1996 
  Keywords    Barium, Niobium, Tantalum, Tellurium, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1411.pdf 
 Identifier    ZNB-1996-51b-1411 
 Volume    51 
4Author    E. Peters, Hk Müller-BuschbaumRequires cookie*
 Title    Synthese eines Pyrochlors mit Ti11: (Tao^Ti1o,33)2Sm20 7 Synthesis of a Pyrochlore Containing Ti11  
 Abstract    High temperature reactions using a C 0 2-LA SER led to a Ti11 containing phase o f the com position (T ao^yT i^^^Sn^O y, space group O 7 -Fd3m (No. 227), a = 10.385(2) Ä . The oxidation state Ti11 which is stabilized by incorporation into the cubic pyrochlore structure was proved by the statistical occupation of the 16c 
  Reference    Z. Naturforsch. 50b, 1340—1342 (1995); eingegangen am 2. Mai 1995 
  Published    1995 
  Keywords    Titanium(II), Tantalum, Rare Earth, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1340.pdf 
 Identifier    ZNB-1995-50b-1340 
 Volume    50