Composite material for light construction work comprises a two- or three-dimensional array of hollow metal spheres surrounded by a low-melting metal or alloy

摘要

Composite material for light construction work comprises a two- or three-dimensional array of hollow metal spheres surrounded by a metal or alloy whose melting point is below that of the protective shell of the spheres. An independent claim is also included for producing the composite material by filling a mold with the hollow spheres, covering the pouring hole with an open-pore metal foam, and preheating the metal or alloy and pouring it into the mold.