Open AccessProduction of dense ceramics based on magnesium aluminate spinel with an evaporating additive
Author(s) -
E. A. Kozlovskaya,
M. O. Senina,
D. O. Lemeshev
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/971/3/032008
Subject(s) - spinel , sintering , calcination , materials science , magnesium , ceramic , porosity , precipitation , aluminate , metallurgy , atmospheric temperature range , oxide , mineralogy , chemical engineering , chemistry , catalysis , composite material , cement , thermodynamics , biochemistry , physics , meteorology , engineering
The influence of the evaporating additive on the properties of ceramics based on magnesium aluminate spinel obtained by high-temperature sintering in vacuum was investigated. The spinel precursor was obtained by chemical reverse co-precipitation, which after that was calcined at a temperature of 1200 °C. As an additive, boron oxide B 2 O 3 was used in the concentration range of 5.0-7.0 wt.% Sintering of the samples was carried out at temperatures of 1700 and 1750 °C. Identified trends allowing to obtain the densest samples with minimal porosity.