公开(公告)号：WO1994005599A1

公开(公告)日：1994-03-17

申请号：PCT/US1993008199

申请日：1993-09-01

Applicant: THE CATHOLIC UNIVERSITY OF AMERICA

Inventor： THE CATHOLIC UNIVERSITY OF AMERICA ,  HOJAJI, Hamid

IPC: C01F11/02

CPC classification number: C04B35/653 ,  C04B35/45 ,  H01L39/2419 ,  Y10S505/725 ,  Y10S505/733 ,  Y10S505/742 ,  Y10S505/785

Abstract: A method is disclosed for fabricating bulk superconducting materials into shaped articles, including ones of relatively large sizes and complex shapes, which have high densities, high integrity, high magnetization and critical current densities. A mixture of superconducting material is completely or substantially melted and the molten material is then cooled to room temperature and ground to a powder. The ground powder is next mixed with a second phase made up of either precursor superconducting powder or a mixture of metallic silver and copper. The resulting mixture is then shaped into an article by conventional ceramic article forming techniques: pressing, extruding, molding or the like. The resulting shaped article is heated to a temperature at which a substantial amount of its content of second phase material is melted, thus facilitating densification of the entire shaped article. The resulting dense specimen is annealed in an appropriate environment while it is being cooled to room temperature.

Abstract translation: 公开了一种用于将体超导材料制成成型制品的方法，其包括具有高密度，高完整性，高磁化强度和临界电流密度的相对大尺寸和复杂形状的成型制品。 超导材料的混合物完全或基本上熔化，然后将熔融材料冷却至室温并研磨成粉末。 接地粉末与由前体超导粉末或金属银和铜的混合物组成的第二相混合。 然后将所得混合物通过常规的陶瓷制品成形技术成型为制品：压制，挤出，模塑等。 将所得的成形制品加热至其相当量的第二相材料含量熔化的温度，从而有助于整个成型制品的致密化。 将所得到的密实样品在适当的环境中进行退火，同时将其冷却至室温。