Open AccessInfluence of Bi2O3 on sintering and crystallization of cordierite ceramics
Author(s) -
Nataša Đorđević
Publication year - 2005
Publication title -
science of sintering/science of sintering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1820-7413
pISSN - 0350-820X
DOI - 10.2298/sos0503189d
Subject(s) - sintering , cordierite , materials science , ceramic , scanning electron microscope , crystallization , chemical engineering , diffraction , phase (matter) , morphology (biology) , oxide , mineralogy , composite material , metallurgy , optics , chemistry , organic chemistry , physics , biology , engineering , genetics
The influence of Bi2O3 on the process of cordierite ceramics preparation, 2MgO-2Al2O3-5SiO2 (MAS) was investigated. The following binary systems were used for the presented research: MgO/Bi2O3 (sintered at 820ºC and 1100ºC), Al2O3/Bi2O3 and SiO2/Bi2O3 (sintered at 1100ºC). The composition of these systems consisted of 80% of oxide and 20% Bi2O3. The effects of sintering, composition and morphology were investigated by X-ray diffraction, scanning electron microscopy and EDS analysis. It has been found that Bi2O3, besides a liquid phase, forms intermediary unstable compounds with MgO and Al2O3. MAS ceramics were sintered with 10% Bi2O3 at 1000ºC, 1100ºC and 1200ºC.