Reaction between boron fibers and an aluminum matrix during the production of VKA-1 composite material

1. In the manufacture of VKA-1 composite material the diffusion welding of the semifinished product is accompanied by the formation at the fiber/matrix interfaces of the AlB2 phase in the form of spherical inclusions at sites of Al2O3 film disintegration on the matrix foils. 2. To each diffusion welding temperature there corresponds a certain period of time during which no AlB2 phase is formed at the fiber/matrix interfaces. 3. A method of assessing the defectiveness of the surfaces of reinforcing fibers is described, which can be effectively employed for studying the reaction in the CM, particularly its early stages.