THE CONSTITUTION OF THE RUTHENIUM TELLURIUM SYSTEM

被引:6
|
作者
BERNATH, S [1 ]
KLEYKAMP, H [1 ]
SMYKATZKLOSS, W [1 ]
机构
[1] UNIV KARLSRUHE,INST MINERAL,D-76128 KARLSRUHE,GERMANY
关键词
D O I
10.1016/0022-3115(94)90287-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The constitution of the Ru-Te system was investigated in the concentration range 0-70 at% Te between 400 and 1200-degrees-C using metallography, X-ray diffraction, X-ray microanalysis and differential thermal analysis. Only one intermediate compound, RuTe2, exists in the system crystallizing in the metastable marcasite type at low temperatures and in the pyrite type at high temperatures. The transition is monotropic at about 470-degrees-C in equilibrium with Ru and below 440-degrees-C in equilibrium with Te. RuTe2 is hyperstoichiometric and has a narrow homogeneity region which ranges between 67.3 and 67.8 at% Te. The compound decomposes at 1175-degrees-C and 1 bar into Ru and gaseous Te. The maximum Te solubility in Ru is 0.13 at% Te at 1000-degrees-C.
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页码:128 / 131
页数:4
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