公开(公告)号：JPH1074986A

公开(公告)日：1998-03-17

申请号：JP18314697

申请日：1997-06-24

Applicant: NAT AEROSPACE LAB

Inventor： NODA YASUTOSHI ,  KOU ENSEI ,  KIZARA KATSUHITO ,  KUMAGAI TATSUO ,  TANJI YASUNORI ,  CHIN RITSUTOU ,  SHINNO MASAYUKI ,  TADA YASUO

IPC: H01L35/08 ,  H01L35/14 ,  H01L35/26 ,  H01L35/32 ,  H01L35/34

Abstract: PROBLEM TO BE SOLVED: To obtain highly reliable thermoelectric elements for low, intermediate and high temperatures having long service life by performing discharge plasma sintering, while pressing a thermoelectric semiconductor material against an electrode material thereby integrating a thermoelectric conversion element body and an electrode. SOLUTION: A metal plate or a metal powder electrode material 6 composing one electrode of a thermoelectric conversion element, a powdery thermoelectric semiconductor material 5 composing a thermoelectric conversion element body, and the metal plate or metal powder electrode material 6, composing the other electrode of the thermoelectric conversion element are arranged sequentially on a lower punch 4 in the cavity 1 of a die 2. Both upper and lower punches 3, 4 are then pressed to compress the electrode material 6 and the thermoelectric semiconductor material 5. Under that state, a high current is conducted between the upper and lower punches 3, 4 in order to perform discharge plasma sintering, thus integrating the electrode material 6 and the thermoelectric semiconductor material 5. According to the method, highly reliable thermoelectric elements for low, intermediate and high temperatures, having long service life can be obtained.

公开(公告)号：JPH08316533A

公开(公告)日：1996-11-29

申请号：JP14688695

申请日：1995-05-23

Applicant: NAT AEROSPACE LAB

Inventor： SUDO TAKAYUKI ,  CHIN RITSUTOU ,  KIZARA KATSUHITO ,  KUMAGAI TATSUO

IPC: G01R31/00 ,  G01N25/00 ,  H01L35/26 ,  H01L35/30 ,  H01L35/34

Abstract: PURPOSE: To provide a thermoelectric element performance evaluation method and a device, wherein a one-dimensional heat flow condition can be realized so as to accurately evaluate the performance of a thermoelectric element of gradient structure under a condition of large temperature difference. CONSTITUTION: A thermoelectric element arranged between a primary heat source 2 and a cooling source to measure a thermoelectromotive force or the like is surrounded with a heat shield 7, and an auxiliary heat source 3 is provided to heat the outside of the heat shield 7 from across so as to make the temperature distribution of the heat shield 7 nearly equal to a temperature distribution induced in the thermoelectric element due to a temperature difference between the primary heat source 2 and the cooling source. A temperature distribution around the thermoelectric element is set nearly equal to that of the element, whereby the thermoelectric element is kept under a condition of one-dimensional heat flow.