专利名称：PRODUCTION OF RAW POWDER FOR OXIDE SUPERCONDUCTORjasmine li
royal mail发明人：NAKAMURA NAOMICHI,FUKUDA
英国留学程序YASUTAKA,SHIMOTOMAI MICHIO,KOSEKI
eoc2011英语二答案YOSHIHIRO
武汉英语培训机构
申请号：JP14058088
申请日：19880609
公开号：JPH01119513A
公开日：
按时的
中班家长会
19890511
专利内容由知识产权出版社提供
more than i can say
摘要：PURPOSE:To obtain the title raw powder capable of providing an oxide superconductor with improved critical temp. and critical current density in a short sintering time by calcining the raw material for the oxide superconductor contg. copper, crushing the calcined material, then pulverizing the material by an air-current pulverizer, and then classifying the pulverized material. CONSTITUTION:The raw material for the oxide superconductor contg. copper as the building element (e.g., Y2O3, BaCO3, CuO, etc.) is calcined, and then crushed to obtain the coar powder for an oxide superconductor having <=1mm particle size. The coar powder is charged in the gas inlet pipe of the air- current pulverizer, then injected into a crushing chamber by the supersonic gas (e.g., supersonic gaous oxygen) in the gas inlet pipe, and pulverized. The pulverized material is then classified, and the fine raw powder for an oxide superconductor having uniform particle size is obtained. The obtained powder is compacted, and then sintered to obtain an oxide superconductor having excellent superconductivity.
dog申请人：KAWASAKI STEEL CORP 更多信息请下载全文后查看
