| 摘要 |
A powder material is put into a cylindrical mold and electrodes are brought into contact with the side surface of the mold and a current is applied to sinter the material in the mold while a pressure is applied to the material. In this process, local temperature difference is kept as small as possible. A pair of electrodes are brought into contact with the side circumferential surface of a cylindrical mold (25) filled with a powder material (28) to which a pressure is applied and a current is applied to the mold (25) to heat the powder material (28) in the mold (25) and a sintered body is obtained. In order to sinter the material by the current application through the pair of electrodes, two pairs of electrodes (19a, 19b, 19c, 19d) which face each other are all brought into contact with the side surface of the mold (25) and the current is supplied through the electrodes (19) alternately. By this method, the current application contacts of the electrodes are changed with a lapse of time, local temperature difference in the mold (25) during the sintering can be avoided. <IMAGE> |
