Patent ID: 7547204

Claim:
A nano-precision sintering system for sintering a nano-sized powder of a material in a pulse energization and pressure sintering process to obtain a highly purified sintered compact having a nano-sized grain structure, said nano-precision sintering system characterized by comprising: at least one pre-process chamber defined by at least one sealed housing and designed to be controlled into a predetermined atmosphere; a sintering process chamber defined by a sealed housing and designed to be controlled into a predetermined atmosphere; a shut-off system operatively disposed in a passage providing communication between said pre-process chamber and said sintering process chamber so as to block the communication between said both chambers selectively while keeping it in an air tight condition; and a pulse energization and pressure sintering machine having a vacuum chamber allowing for said sintering process to be carried out under a vacuum atmosphere or an inert gas atmosphere, wherein said vacuum chamber is disposed in said sintering process chamber such that said vacuum chamber can be isolated from said sintering process chamber, measuring a weight of said powder of a material, filling a sintering mold with said powder of a material, inserting an upper punch into said sintering mold and pressing said powder of a material in said sintering mold are executable within said pre-process chamber, and placing said sintering mold filled with said powder of a material into said sintering machine can be carried out under the predetermined atmosphere within said sintering process chamber without being exposed to an external air.