TY JOUR TI INVESTIGATIONS OF DENSITY AND POROSITY OF COATINGS MADE OF CERAMIC-POLYMERIC OR COMPOSITES WITH QUASI-CRYSTALS OBTAINED WITH GAS-DETONATION METHOD AND METHOD OF GAS-DYNAMIC SPUTTERING KW quasi-crystals KW coatings KW density KW porosity JO Bulletin of Bryansk state technical university AU Sil'chenko, O.B. AU Siluyanova, M.V. AU Hopin, P.N. PY 2020 IS 2020 PB Bryansk State Technical University