TY JOUR TI COMPARATIVE ANALYSIS OF THE STRUCTURE AND PHASE COMPOSITION OF HIGH-STRENGTH CERAMIC PRODUCTS KW phase composition KW microstructure of ceramics KW X-ray amorphous phase KW quartz KW mullite KW leucite JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Horina, A.V. AU Shelkovnikova, T.I. PY 2023 IS 8 PB Belgorod State Technological University named after V.G. Shukhov