Method for electric sintering and mold for use in the method

摘要

An electric sintering mold (2) includes a die (3) defining a cavity for receiving a powder material (1) therein, a punch (4) capable of advancing into said cavity. The powder material (1) received in the cavity is subjected to a pressure via said punch (4) from a pressurizer (6) and a pulsating electric current externally supplied, so that joule heat is generated within the material (1)for sintering the material. For enabling higher efficiency in the electric sintering operation, at least one of the punch (4) and the said die (3) is formed of material containing metal boride having electroconductivity. An electric sintering apparatus using such mold (2) and an electric sintering method utilizing such apparatus and mold (2) are also disclosed. <IMAGE>