Purpose of the development: To improve the production of new highly thermostable solid and porous ceramic materials.

Recommended application field: The invention is industrially applicable and can be used in the production of technical ceramics. Enterprises Materials Research directions.

Technical characteristic: Open зorosity, % - 22-24 Density, g / cm3 - 1.90 Thermal expansion coefficient 20-800 C *, C * h10v6 - 1.0-1.2, Maximum operating temperature C * - 1200.

Advantages over analogues: Щre dressing technology is developed. Since one of the components in the initial mixture should be quartz, that is suitable for synthesis of cordierite sillimanite concentrates third-second grade. This factor can significantly affect for the better on the cost of producing cordierite ceramics.

The development stage readiness: Tested experimental exploitation order

Technical and economic effect: The technical result of the claimed technical solution is to provide for the manufacture of cordierite ceramic mass with a feedstock available and more economical than in the prior art method.

Description of the development:
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Production of cordierite ceramics in the form of a single-phase product is one fairly complex physical, chemical and technological processes. The complexity of the synthesis of cordierite (2Mgo-2Al2O3-5SiO2) high (95-98 vol.%) Content of the main phase is determined by the fact that its constituent oxides of magnesium, aluminum and silicon have a high melting point -2800, 2030 and 1700 * respectively, sintering 1600 *. At the same time the low temperature incongruent melting of cordierite - 1460 * C does not allow to raise its synthesis temperature above 1400 C *. The IPM NASU established fundamentals of the directed synthesis cordierite low (2-3 vol.%) Content of impurity phases by solid-phase sintering in the temperature range 1000-1360 * and crystallization of hardened glass. The range of compositions close to stoichiometric cordierite, a low thermal expansion is minimal. On the basis of the synthetic cordierite developed new technology for manufacturing thermal Visoko persistent dense and porous (22-24, 45-50%) of ceramic materials with low coefficient of linear expansion (0.8-1.2 C * - 10-6 in the range 20-800 C * ) and high mechanical strength of catalysts and particulate filters. Dilatogramy cordierite experimental samples obtained by solid-phase synthesis, crystallization tempered glass, quartz glass, and a sample cut from a catalytic Sorning Corporation manufactured unit.

corresponds technical description
Conforms to technical characteristic

Possibility of transfer abroad:
Technological document's sale

Photo

Country Ukraine

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E-mail: gal@uintei.kiev.ua