Heat-Resistant SiO2–Al2O3–TiO2 Ceramics with Nanostructured Alumina Filler and Their Properties
This chapter deals with preparation processes of SiO2–Al2O3–TiO2 composite materials doped by nanostructured fibrous powders γ- and α-Al 2O3. Physical and chemical interaction of active nanostructured fillers γ-and α-Al2O3 with a ceramic matrix of SiO2–Al2O3–TiO2 was investigated. Introduction of nanostructured fibrous powders γ- and α-alumina initiated solid-phase reactions—formation of mullite and tialite when heating in the field of temperatures in the range of 1350–1500 °C. The formed acicular crystals of mullite served as the centers of energy dissipation and strengthened a composite. The compounds of alumina titanate reduced the value of linear expansion thermal coefficient of composite material and increased its thermal stability. It has been shown that alumina nanostructured fillers changed structure and improved the properties of silica–alumina–titania composite materials.
KeywordsCeramic Sample Moisture Absorption Glass Mass Cellulose Hydrate Nanostructured Fiber
Research was realized by the support of State Scientific Program of NAS of Belarus.
- 1.Kats SM (1981) High-temperature and heat-insulating materials. Metallurgia, MoscowGoogle Scholar
- 2.Krasulin Yul, Barinov SM, Ivanov VS (1985) Structure and destruction of materials made of refractory compound powders. Nauka, MoscowGoogle Scholar
- 4.Rogovin ZA (1972) Chemistry of cellulose. Khimiya, MoscowGoogle Scholar
- 5.Ermolenko IN, Ulyanova TM, Vityaz PA, Fyodorova IL (1991) Fibrous high-temperature ceramic materials. Nauka i Tekhnika, MinskGoogle Scholar
- 7.Ulyanova TM, Krutko NP, Titova LV, Zub EM (2002) Radiographical investigation of phase transitions and components interaction in system ZrO2-Al2O3. J Surf Radiogr Synchrotron Neutron Investig. 7:49–52Google Scholar
- 8.Umansky YaS (1969) Radiography of metals and semiconductors. Metallurgia, MoscowGoogle Scholar
- 9.Eitel V (1962) Physical chemistry of silicates. Foreign Literature Publishing House, MoscowGoogle Scholar