出版日期：2003-11-15 00:00:00

著者：Lin, C. H.; 高惠春; Kao, H. C. I.; 王啟銘; Wang, C. M.

單位：淡江大學化學學系

出版者：Elsevier

著錄名稱、卷期、頁數：Materials Chemistry and Physics 82(2), Pp.435-439

摘要：The reaction of R(Ba1.5Sr0.5)Cu3Oy (RS123, R=La, Nd, Sm, Eu, Gd, Dy, Ho) powder with water is studied quantitatively. The initial reaction rate law is R0=k[S]0a[H3O+]0b, where [S]0 is the initial surface area of the RS123 superconducting powder. For the entire RS123 series, a is close to 1, indicating that the reaction rate is linearly dependent on the surface area of the powder. However, b is variable for the whole series. For R=La, Nd, Sm, Eu, Gd, Dy, and Ho, b equals to 0.75, 0.70, 0.62, 0.56, 0.51, 0.56, and 0.60, respectively. It is found that the stability of RS123 in water is correlated with the oxygen stoichiometry of RS123. The stability decreases with increasing the oxygen stoichiometry.

關鍵字：Superconductors;Solid state synthesis;Corrosion;Oxygen stoichiometry

語言：en

ISSN：0254-0584

期刊性質：國外

審稿制度：否

國別：CHE

出版型式：紙本