Subsolidus phase relations of the SrO–MO<sub>2</sub>–CuO systems (M = Ti, Zr and Hf) at 900 °C in air期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Subsolidus phase relations of the SrO–MO₂–CuO systems (M = Ti, Zr and Hf) at 900 °C in air

Authors:	J.-C. Grivel

Affiliation:	^aTechnical University of Denmark, Risø National Laboratory, Materials Research Department, Frederiksborgvej 399, DK 4000 Roskilde, Denmark

Abstract:	The subsolidus phase relations of the SrO–MO₂–CuO (M = Ti, Zr and Hf) systems were investigated in air. The samples were equilibrated at 900 °C. The SrTi₄Cu₃O₁₂ compound is the only ternary oxide phase stable under these conditions in the investigated systems. This phase is non-stoichiometric, its actual composition being Sr_0.95Ti_4.05Cu_2.95O_x. The SrO–ZrO₂–CuO and SrO–HfO₂–CuO systems have a similar structure. No Zr or Hf equivalents of the SrTi₄Cu₃O₁₂ phase were formed under the present conditions.

Keywords:	Oxide materials Transition metal alloys and compounds Phase diagrams X-ray diffraction
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