alexa Powder Metallurgy Based Porous Metal Biomaterials

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Powder Metallurgy Based Porous Metal Biomaterials

Powder metallurgy (P/M) as a fabrication technique involves the compaction of metallic powders, followed by a heat treatment to produce a denser piece. The technique makes it possible to produce a virtually non-porous and shaped piece with very close dimensional tolerance, which has the properties almost equivalent to the fully dense parent material. Usually diffusional processes through heat treatment are employed to achieve these properties; it is thus particularly suitable for producing materials with low ductility, since only little plastic deformation among compacted particles occurs. For metallic powders with high melting temperatures, they are difficult to be melted or casted. With the intended use of multiple binders, P/M on the binders-mixed powders, followed by a heat treatment is competent to produce shaped pieces with required properties. Furthermore the metal injection molding (MIM) technique can be applied for fast production on the pieces with multifaceted designs.

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