| 摘要 |
FIELD: energy.SUBSTANCE: invention relates to nuclear power, particularly to production of pebbles. Method comprises successively depositing on a fuel microsphere by pyrolysis of a gas mixture in a boiling layer a low density, high density, silicon carbide layer and outer high density coating layer. Low-density silicon carbide layer is deposited from a mixture of methyl silane and argon at concentration of methyl silane of 5-15 vol%, high-density silicon carbide layer is deposited from a mixture of argon and methyl silane with methyl silane concentration of not more than 10 vol%, silicon carbide layer is deposited from a mixture of argon and methyl silane with methyl silane concentration of not more than 5 vol%, external high-density silicon carbide layer is deposited from a mixture of methyltrichlorosilane and hydrogen at concentration of methyltrichlorosilane 1.2-1.5 vol%.EFFECT: technical result is simplification of method for production of nuclear reactor pebbles, longer service life of fuel microspheres, as well as wider range of application for fast neutron reactors.5 cl, 1 tbl, 5 dwg |
