Ca-Co-O系材料中的细条状组织

Highly-oriented Wires in Ca-Co-O Materials

摘要: 采用氩等离子体电弧, 熔炼名义组成分别为Ca₃Co₄O₉、Ca₂Co₂O₅、Ca₃Co₂O₆的样品, 对所得熔炼样品在不同温度下进行退火处理。实验表明, 在1200℃下退火后, 能够在样品局部区域内获得具有高度取向排列的线束状组织。物相分析和微区成分分析结果表明线束状组织是含钙氧化亚钴。

Abstract: Samples with nominal composition of Ca₃Co₄O₉, Ca₂Co₂O₅ and Ca₃Co₂O₆ were melted by employing argon arc plasma and then annealed at different temperatures (1100℃、1200℃ and 1300℃, respectively) with K₂CO₃ as flux.Microstructure with highly-oriented bunchy CoO wires was observed in the samples annealed at 1200℃, and the composition of wires was investigated by using EDS.