Open AccessПрочностные свойства циркониевой керамики, упрочненной оксидом алюминия, с добавлением диоксида кремния
Author(s) -
А.А. Дмитриевский,
Д.Г. Жигачева,
А.О. Жигачев,
П.Н. Овчинников
Publication year - 2021
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.02.50475.138
Subject(s) - flexural strength , materials science , compressive strength , ceramic , cubic zirconia , composite material , yield (engineering) , mineralogy , chemistry
The effect of alumina and silica on strength of zirconia ceramics, stabilized with calcia, was studied. We have established the optimal concentrations of the components in the CaO-ZrO2+Al2O3+SiO2 system; these concentrations correspond to the highest flexural strength of 980±70 MPa. The optimal concentration of alumina is 5 wt.% in absence of silica. In terms of compressive strength the highest values of 2.44±0.15 MPa were obtained when concentration of alumina was 5 wt. % and content of silica was 5 mol. %. Stress-strain diagrams indicate presence of plasticity in the materials containing 4-5 mol. % SiO2 by having a yield plateau