融体噴霧BiSrCaCuO粉の相変化のEPMA組成座標解析 (酸化物超伝導体の材料プロセス化と特性評価<特集>)

概要

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A new method of EPMA mapping was developed and applied to the analysis of Bi-Sr-Ca-Cuoxide phases from atomized glass powder. The EPMA composition-coordinate mapping method, in which the frequency of the located spot-area of the same composition is plotted on thecoordinate with the concentration of each element, clearly showed the phase separationfrom homogeneous glass powder. A localized distribution of composition was found nearCa<SUB>2</SUB>CuO<SUB>x</SUB> with several percentage of Sr, and the distribution was connected with the mainphase. The main phase also had two spread of distribution to CuO and SrO. In the sampleconventionally mixed and sintered, Cu-rich phase without Bi was appeared instead of CuOand SrO.
社団法人粉体粉末冶金協会の論文