FIELD: technological processes; chemistry.
SUBSTANCE: invention relates to production of high-density ceramics based on ZrO2-Al2O3-SiO2. Developed materials can be used for production of refractory products, high-temperature parts of machines and furnace equipment. Ceramic material has the following chemical composition, wt%: Al2O3 53–61, ZrO2, stabilized Y2O3, 26–36, SiO2 6–16, MnO 1–5. Material is sintered to dense state at low temperature of 1,250–1,350 °C, which became possible as a result of using an additive of manganese oxide.
EFFECT: obtained material is characterized by fine-crystalline structure, low porosity and high mechanical characteristics – bending strength from 270 MPa to 420 MPa at 1,250 °C and 1,350 °C, respectively.
1 cl, 1 ex, 1 tbl
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