Radiation stability of carbon-carbon composites after high-temperature neutron irradiation

Carbon-carbon composites of fibers (CCCF) differing in construction and structure are investigated in the present work under conditions of neutron irradiation. The minimal cross section of the samples (4 x 4, 5 x 5, 8 x 8 mm) was chosen on the basis of the structural features of the composite and the sizes of the product. The following characteristics were determined for samples before and after irradiation: density, bending, compression strength, dynamic elastic modulus, thermal conductivity, electrical resistivity, thermal coefficient of linear expansion, and unit-cell constant. 1 ref., 1 fig., 1 tab