PROCEDE DE PRODUCTION D'ARTICLES PAR LA METALLURGIE DES POUDRES, ET ARTICLES OBTENUS

摘要

Method of producing a composite product, including providing within a mold cavity at least two dissimilar powders so that one of such powders adheres to part of or the entire surface that defines the cavity. At least one of the powders can be magnetic, so that the magnetic powder is provided in the cavity under the influence of a magnetic field to locate the magnetic powder at a predetermined position in the cavity in response to the field, another powder being provided in the remainder of the mold cavity, after which the powders are consolidated into a self-sustaining body that can be sintered. The magnetic powder can be a material susceptible to magnetic attraction, such as nickel, iron and/or cobalt, or the individual particles thereof can have an exterior or interior portion of such magnetic material.