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題名 | Coprecipitation Synthesis of a Superconductor Via Multi-precipitants |
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作者 | 陳永芳; 沈祥榮; | 書刊名 | Journal of the Chinese Chemical Society |
卷期 | 47:2 2000.04[民89.04] |
頁次 | 頁307-314 |
分類號 | 337.472 |
關鍵詞 | Coprecipitation; Superconductor; YBa[feaf]Cu[feb0]Oy; |
語文 | 英文(English) |
英文摘要 | A precipitation process has been developed to prepare precursor powders, which can be calcined and sintered to form high-Tc superconductors such as YBa2Cu3Oy. Precursor powders are prepared using a mixed-precipitants system in which a solution contains precipitating anions such as hydroxide, oxinate and oxalate ions. A theoretical study on the conditions of mixed-precipitants coprecipitation is performed. The solution pH of complete precipitation of the title system is extended and is maintained between 4.46 and 12.0. A series of experiments were conducted to confirm the as-derived optimal condition. Finally, characterization of the properties of the YBa2Cu3Oy obtained after high temperature treatment is reported. |
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