Glass and glass-Ceramic obtained in the doped Bi-Sr-Ca-Cu-O system. Early stage of crystallization

摘要

The glass forming 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.