A. Nitta et al., INTERFACE REACTIONS BETWEEN GLASS MELTS CONTAINING TRANSITION-METAL OXIDES AND FERRITES, Journal of Materials Science, 29(10), 1994, pp. 2629-2632
The interface reactions between SiO2-PbO-MO melts (M = Fe, Mn, Zn and
Ni) and Mn-Zn and Ni-Zn ferrites were studied using electron probe mic
roanalysis and X-ray diffraction. Ni ions in the glass melt containing
NiO were localized at the interface between the glass and Mn-Zn ferri
te. The Ni-rich layer was also detected at the interface between NiO c
ontaining glass melt and Ni-Zn ferrite; the composition of this layer
was thought to be close to NiFe2O4. Pb8NiSi6O21 crystal was deposited
as the product of the reaction with the glass melt and Mn-Zn ferrite a
t 700-degrees-C. As compared with Mn-Zn ferrite, no reaction products
were formed in Ni-Zn ferrite at various temperatures. The dissolution
length of Mn-Zn ferrite in SPN5 glass melt was found to be smaller tha
n for other melts, and it is concluded that the NiO-rich layer at the
surface of the ferrite is chemically very durable to the glass melts.