COMPOSITE COATING BASED ON CARBON NANOTUBES AND METHOD OF ITS PRODUCTION Russian patent published in 2020 - IPC C09D1/00 C23C16/00 C01B32/05 

FIELD: nanotechnology.

SUBSTANCE: invention can be used in production of capacitors and supercondensers, as well as astronomical instruments for space vehicles. Composite coating 10 comprises layer 14 of non-oriented carbon nanotubes (CNT) 16 grown by chemical vapor deposition (CVD) coated with metal oxide shells 18, with average diameter from 0.3 to 150 nm. Composite coating can also contain ceramic protective layer above said carbon nanotubes and/or in form of filler in said CNT layer from material selected from Al₂O₃, Si₂O, Si₃N₄, MgF₂, SiO_xN_x, AlN, AlNO, MgO, ZnO, SnO₂, NiO, ZrO₂, Cr₂O₃, MoO₂, RuO₂, CoO_x, CuO_x, VO_x, FeO_x, MnO_x, TiO₂, CaF₂, BaF₂, ternary and/or complex oxides, including one or more said elements, and mixtures thereof. Substrate 12 is placed in reaction chamber, on surface of which there are nanoparticles of catalyst, which is metal selected from Fe, Co, Ni and their mixture, and/or carbide of said metal. Then, CNT precursor together with inorganic, organometallic or organometallic precursor for deposition of second metal is introduced into reaction chamber, forming metal oxide shell 18, and growing said layer 14 at temperature from 300 to 600 °C. After that, said protective layer can be deposited. Obtained composite coating is used in an optically black coating.

EFFECT: invention reduces light scattering, increases mechanical strength, increases moisture resistance and chemical resistance.

19 cl, 14 dwg, 1 tbl, 6 ex