Patent ID: 6217816
Filing Date: 2001-04-17
Classification: B28B,B29C,B33Y,C04B

Abstract:
A method for rapid forming of a ceramic work piece, comprising the steps of:a. mixing an inorganic binder, a dissolving agent, and ceramic powder together to form a plastic green mixture;b. forming a thin green layer on a specified surface with the plastic green mixture;c. hardening the thin green layer due to adhesive bonding among ceramic particles by the inorganic binder;d. scanning the hardened thin green layer with a directed high-power energy beam along a pre-determined path in order to sinter and bond ceramic molecules locally by heat fusion and produce a two-dimensional thin cross section of the ceramic workpiece;e. repeating Steps (b), (c), and (d) until a three dimensional ceramic workpiece is fabricated based on a pre-determined number of thin ceramic layers that are bonded together by the high-power energy beam of Step (d); andf. removing a green portion of the ceramic part that is not scanned by the high-power energy beam and thus producing a ceramic workpiece.