Air-Tightness and Stability of Uglekon Type Carbon-Carbon Composite Materials in Corrosive Media

Abstract

Work is devoted to studying important efficiency indices of carbon-carbon composite materials of the Uglekon type, i.e., air-tightness and corrosion resistance in different corrosive media. Range characteristics are established for one of the main structural parameters, i.e., pyrocarbon coating thickness based on a slip underlayer of a supporting base of Uglekon material providing air-tightness, and consequently the efficiency of all composites under extreme high temperature and chemical activity conditions of corrosive media. The effect of thermal loads on air-tightness is also studied. Research results are entirely confirmed during approval of the composites developed on full-scale structures under severe conditions of high pressure, high temperature, and corrosive media, and long-term operating capacity is provided for the properties tested.