Open AccessLow temperature sintering of mechanically activated BaCO3-TiO2
Author(s) -
P Vera Pavlovic,
B. D. Stojanovic,
B. Pavlović,
Milutin Živković,
M.M. Ristić
Publication year - 2002
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/sos0201073p
Subject(s) - materials science , sintering , calcination , tetragonal crystal system , scanning electron microscope , microstructure , stoichiometry , activation energy , powder diffraction , phase (matter) , metallurgy , chemical engineering , analytical chemistry (journal) , composite material , crystallography , catalysis , chemistry , chromatography , organic chemistry , engineering
In this article low temperature sintering of mechanically activated BaCO3-TiO2 system was studied. A stoichiometric mixture of BaCO3 and TiO2 powders was mechanically activated in a high-energy vibromill for 0, 30, 90 and 180 min, calcined at 800oC for 1 h and reaction sintered at 1100oC and 1200oC for 2 h (heating rate of 10oC/min). Phase compositions and crystallographic data of initial, activated, calcinated and sintered specimens were obtained by the XRPD method. It was noticed that mechanical activation enhanced and lowered the temperature of the formation of tetragonal BaTiO3. Scanning electron microscopy was used to study and characterize microstructures of the samples