磁場印加による酸化物ガラス融液の挙動

概要

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Flow behavior of five kinds of glass melts upon application of a strong vertical magnetic field up to 2T have been studied. In the case of glasses containing glass network former (NWF) such as La_2O_3-B_2O_3, TiO_2-SiO_2, Nb_2O_5-P_2O_5 and La_2O_3-GeO_2 systems, no convection-current changes was observed. On the other hand, in the case of a glass (27Bi_2O_3・56PbO・17Ga_2O_3) without a typical NWF a pattern of large vortex current was observed in the range of 0.2 to 2T. This phenomenon may be applied both to develop a new non-contact mixing technique in glass melting for elimination of bubbles and glass defects such as streaks, and for obtaining better homogeneity of compositions. The relation between the change of convection current caused by the magnetic field and the structure of glass melts is discussed in detail.
社団法人日本セラミックス協会の論文
1998-11-01