کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1616474 1516380 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Subsolidus phase relations of the SrO–WO3–CuO system at 800 °C in air
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Subsolidus phase relations of the SrO–WO3–CuO system at 800 °C in air
چکیده انگلیسی

The subsolidus phase relations of the SrO–WO3–CuO system were investigated in air. The samples were equilibrated at 800 °C. Under these conditions, eight binary oxides are stable. The pseudo-ternary section contains two ternary oxide phases: the previously described Sr2CuWO6 phase as well as a new phase with Sr8CuW3O18 stoichiometry. The crystal structure of this new compound was solved and refined in the R-3 space group, unit cell parameters a = 5.7202 Å and c = 28.873 Å. Sr8CuW3O18 has a distorted perovskite type structure, where some of the Sr atoms are positioned at the B sites, and the composition may be given as: Sr6(Sr2CuW3)O18. There are indications of existence of a superstructure or stacking faults related to Cu/Sr ordering.


► The subsolidus phase equilibria of the SrO–WO3–CuO system are determined at 800 °C in air.
► The system contains 8 binary oxides and 2 ternary oxide phases.
► A new compound with Sr8CuW3O18 composition is described.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 513, 5 February 2012, Pages 304–309
نویسندگان
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