siliconized graphite[¦sil·ə·kə‚nīzd ′gra‚fīt]
graphite saturated with silicon. Siliconized graphite is obtained by processing porous graphite in a silicon charge at 1800°-2200°C (silicon vapors settle in the pores at such temperatures). It consists of a graphite base, silicon carbide, and free silicon. Siliconized graphite combines the high thermal stability and strength at elevated temperatures typical of graphite with density, impermeability to gas, high resistance to oxidation at temperatures up to 1750°C, and resistance to erosion. It is used as lining in high-temperature furnaces, in metal-pouring devices, and in heating elements, as well as in the manufacture of components for aviation and space technology that operate under conditions of high temperature and strong erosive forces.