Nano-precision sintering system

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.