公开(公告)号：JPH11177156A

公开(公告)日：1999-07-02

申请号：JP36362597

申请日：1997-12-16

Applicant: NAT AEROSPACE LAB

Inventor： NODA YASUTOSHI ,  KOU YASUO ,  MORIYA SHINICHI ,  SHINNO MASAYUKI

IPC: H01L35/14 ,  H01L35/34

Abstract: PROBLEM TO BE SOLVED: To enhance thermoelectric conversion characteristics by performing pressure deformation or extrusion plastic working of a fused or sintered thermoelectric semiconductor material while heating electrically. SOLUTION: A metal powder material 6 for one electrode of a thermoelectric conversion element, a sintered or fused mass of thermoelectric semiconductor material 5, and a metal powder material 6 for the other electrode are arranged sequentially on a punch 4 in the cavity 1 of a die 2. Punches 3, 4 are then pressed each other or one punch is pressed against the other thus compressing the powdery electrode material 6 and the semiconductor material 5. Under that state, a large current is fed between the conductive punches 3, 4 and hot working is performed. Alternatively, a punch 23 is pressed toward the outlet 24 of a die 22 to extrude the thermoelectric semiconductor material 5 while softening. In this regard, a large current is fed between the conductive punches 23, 22 to generate heat and the material is extruded by applying a pressure while controlling the working temperature.