FIELD: chemistry.
SUBSTANCE: invention relates to methods of producing alumina ceramic material meant for making articles from structural ceramic with high static loads. According to the invention, alumina is mixed with a mineralising agent characterised by viscosity of 1-5 Pa·s and surface tension (50-250)·10-3 N/m a temperature interval for burning ceramic in amount of 1-2 wt % on the cation-oxygen component. Sinter is obtained at 1300°C. The sinter is ground, pressed and burnt at 1350-1400°C. The mineralising agent used is in form of chlorides of alkali and alkali-earth metals KCl, MgCl2, LiCl, CaCl2, NaCl, BaCl2.
EFFECT: high ceramic sintering temperature with increase in ultimate bending strength.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAKING CORUNDUM CERAMICS | 2019 |
|
RU2728911C1 |
| METHOD OF PRODUCING ALUMINA CERAMIC | 2012 |
|
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| METHOD OF MANUFACTURING CORUNDUM CERAMICS | 1997 |
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| CHARGE BASED ON ALUMINUM OXIDE AND METHOD FOR ITS PRODUCTION | 2021 |
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| MIXTURE BASED ON ALUMINIUM OXIDE AND METHOD OF PRODUCING STRONG CERAMICS | 2019 |
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| METHOD FOR PRODUCING STRUCTURAL CERAMICS BASED ON ALUMINUM OXIDE | 2022 |
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RU2789475C1 |
| METHOD OF PREPARING CORUNDUM CERAMIC MATERIAL | 2000 |
|
RU2171244C1 |
| PROCESS FOR PRODUCTION OF REACTIVE ALPHA ALUMINA | 2022 |
|
RU2791045C1 |
| METHOD OF PRODUCTION OF ARTICLES ON BASE OF ALUMINUM OXIDE | 2006 |
|
RU2322422C2 |
