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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
Two new phases, U(Ta,W) 5 O 16 and U(Ta,W) 2 O 8 , were formed by solid state reaction of the binary oxides (U 3 O 8 , Ta 2 O 5 , and WO 3 ) and Ta metal powder. They were characterized by high-resolution transmission electron microscopy and X-ray powder diffraction techniques. The phases are orthor
The subsolidus phase diagram CaO-Al 2 O 3 -Ta 2 O 5 has been determined at 1300-1350Β°C. Two ternary phases are present, Ca 2 AlTaO 6 and the new phase, CaAlTaO 5 . From Rietveld refinement of powder X-ray diffraction data, CaAlTaO 5 has the sphene structure, monoclinic 6.6760(3), 8.9546(3), 7.3494(3