Composite material, useful for manufacturing articular implant e.g. joint prosthesis, comprises metal component and plastic component, where metal component comprises internal surface layer, external surface layer and transition layer

摘要

The composite material comprises a metal component (1) and a plastic component (2). The metal component comprises an internal surface layer (3), an external surface layer (5) and a transition layer (4). The surface layers are porous, and the transition layer is dense so that a watertight bulkhead is formed between the surface layers. The internal surface layer comprises an interface zone between the metal component and the plastic component, and is entirely or partially impregnated by the plastic component. The metal component has a total thickness of 1-1.5 mm. The composite material comprises a metal component (1) and a plastic component (2). The metal component comprises an internal surface layer (3), an external surface layer (5) and a transition layer (4). The surface layers are porous, and the transition layer is dense so that a watertight bulkhead is formed between the surface layers. The internal surface layer comprises an interface zone between the metal component and the plastic component, and is entirely or partially impregnated by the plastic component. The metal component has a total thickness of 1-1.5 mm. The internal surface layer has a thickness of 0.35-0.45 mm. Pores of the internal and external surface layers have an average diameter of 150-250 mu m. The transition layer has a thickness of 0.30-0.60 mm. The external surface layer has a thickness of 0.35-0.45 mm. An independent claim is included for an articular implant.