Open AccessProperties of Al2O3-based ceramics with the addition of ultrafine Al2O3 powder synthesized by electrochemical method
Author(s) -
Ю. И. Комоликов,
И. Д. Кащеев,
К. Г. Земляной,
В. И. Пудов
Publication year - 2019
Publication title -
novye ogneupory
Language(s) - English
Resource type - Journals
ISSN - 1683-4518
DOI - 10.17073/1683-4518-2019-7-28-30
Subject(s) - calcination , materials science , ceramic , corundum , sintering , shrinkage , electrochemistry , metallurgy , indentation hardness , chemical engineering , mineralogy , composite material , microstructure , chemistry , electrode , catalysis , biochemistry , engineering
The results of studies of the regularity of sintering and properties of corundum-based ceramics with the addition of ultrafine powder (UFP) Al 2 O 3 synthesized by electrochemical method are presented. It is shown that with an increase in the calcination temperature and the concentration of UFP Al 2 O 3 , a regular increase in linear shrinkage, microhardness and strength of ceramics is observed (the maximum values at 1550 °С are 27,8 %, 17 GPa and 340 MPa, respectively). The introduction of UFP Al 2 O 3 allows even at a calcining temperature of 1550 °C to achieve an apparent ceramic density of 3,87 g/cm 3 . Ref. 12. Tab. 3.