收集方式对喷雾热分解Bi-2223前驱粉末的影响
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摘要
采用国产喷雾热分解设备制备了Bi-2223前驱粉末,分别选用一步收集和分级收集热分解后的粉末,对不同方式收集的粉末进行了XRD分析、SEM观察以及ICP-AES分析,对比了粉末在相成份以及含量、外观形貌、粒径大小和元素原子配比等方面的差别,最终发现采用一步收集方式采集的粉末在相组成、成分均匀度以及原子配比方面均优于分级收集粉末,一步收集方式更适合于收集Bi-2223喷雾热分解粉末.
Bi-2223 precursor powders were fabricated based on the domestic spray pyrolysis equipment.Different powders were collected with different collection methods as one-step and graded collection process.XRD,SEM and ICP-AEC characterizations were performed to study the phase composition,microstructures,as well as the chemical composition of different powders.Based on the obtained results,it was deduced that the powders with one-step collection method exhibited higher uniformity on the phase composition,chemical composition and microstructures,thus would be more suitable for the fabrication of high property Bi-2223 tapes.
Bi-2223 precursor powders were fabricated based on the domestic spray pyrolysis equipment.Different powders were collected with different collection methods as one-step and graded collection process.XRD,SEM and ICP-AEC characterizations were performed to study the phase composition,microstructures,as well as the chemical composition of different powders.Based on the obtained results,it was deduced that the powders with one-step collection method exhibited higher uniformity on the phase composition,chemical composition and microstructures,thus would be more suitable for the fabrication of high property Bi-2223 tapes.
引文
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