Patent ID: 7351371
Filing Date: 2008-04-01
Classification: B22F,C04B

Abstract:
1. A method of making porous near-net-shape metallic parts with an open porosity of at least 10% by volume, the method comprising the steps of: a) forming an injectable mass of a metallic powder of stainless steel, Ti, NiTi, or a titanium alloy, at least one thermoplastic binder, and at least one place holder; b) injection molding the mass into the shape of the part to be produced; c) cooling the injection-molded mass and setting it in a capillary-active material and subjecting it to a first-stage binder removal to produce an open porosity; d) removing the place holder at least partially from the part with a fluid; e) subjecting the part to a thermal binder-removing process; f) subsequently sintering the part.