Production of dense ceramics based on magnesium aluminate spinel with an evaporating additive

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 120...

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Published inIOP conference series. Materials Science and Engineering Vol. 971; no. 3; pp. 32008 - 32013
Main Authors Kozlovskaya, E A, Senina, M O, Lemeshev, D O
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2020
Subjects
Boron oxides
Ceramics
Chemical precipitation
High temperature
Magnesium aluminate
Sintering (powder metallurgy)
Spinel
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Summary: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 B2O3 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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/971/3/032008