EFFECT OF HEAT TREATMENT ON THE PROPERTIES OF THE MECHANICALLY PROCESSED MICA GLASS-CERAMIC MATERIAL
Use of the glass-ceramic materials made on foundry technology and mechanically processed allows to receive vacuum-tight heat-resistant products of the irregular shape and a high precision. It is important for a power engineering, an electronics engineering and other industries. Optimization of the modes of heat treatment of the structure developed earlier allowed to receive the strong, well processed glass-ceramic. In work the structure of material, dependence of durability and hardness from the heat treatment modes is investigated. In the result of the research the following sequence of heat treatment is recommended: the first stage – a four-hour endurance at 600 °C; the second stage – a six-hour exposure at 800 °C; the third stage – a four-hour exposure at 1050 °С. The developed technology allows to make as large-size (to 10 kg), and thin-walled (with thickness less than 0,5 mm) products.