Glass and Glass-Ceramic Obtained in the Doped Bi-Sr-Ca-Cu-O System Early Stage of Crystallization

摘要

The glass sforming ability and the early stage of the crystallization process in the Bi-Sr-Ca-Cu-O system doped with PbO and B_2O_3 has been investigated. The presence of dopants, oxides with low melting points, enhanced glass forming ability and stability. It should be point out that a strict control of the parameters as presence and nature of dopants, heating rate and sequences of an nealing treatment, that influenced the early stage of crystallization process is desirable.