JPS6417832A - Production of fiber reinforced metallic pre-impregnated sheet - Google Patents

Abstract

PURPOSE:To prevent the damage of fibers caused by unmolten metallic grains by passing a plasma stream contg. molten metallic grains through the slit of a shielding plate at the time of plasma thermal spraying the molten grains of the matrix metal onto the inorganic fibers for reinforcing, thereby producing the titled prepreg sheet. CONSTITUTION:At the time of producing the titled sheet for the production of fiber reinforced metal, the metallic grains 4 having 5-100mum grain size of Al, Ti, Cu, Ni or the alloys thereamong as the matrix metal are plasma thermal sprayed by a plasma gun 3 onto a drum 2 in which the fibers 1 for reinforcing such as carbon fibers, silicon carbide fibers, alumina fibers and polymetallo carbosilane fibers are rolled while the drum is revolved. In this case, the shielding plate 6 contg. the slit 5 is deposited between the plasma gun 3 and the fibers 1 for reinforcing, by which the unmolten matrix metallic grains caused by the temp. lowering at the outer circumferential part of the plasma stream are checked by the shielding plate and does not damage and break the fibers 1 for reinforcing by colliding against the fibers. The excellent fiber reinforced metallic prepreg sheet can thus be obtd.