| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to generate a high thermoelectromotive force and a high current value and to facilitate a selection of a crystalline orientation having a high Seeback effect in a thermoelectric conversion element by a method wherein the thermoelectric conversion element contains R, B and Fe and a transmission metal element and is formed into a sintered body, which has an R-Fe-B crystal structure as its main phase and has a C-axis anisotropy. SOLUTION: An R (Provided that, the R is set at least one kind of an element which is chosen from among rare-earth element including Y.)-Fe-B sintered thermoelectric conversion element is one obtanable by a method, wherein an R2 Fe14 B intermetallic compound having an R2 Fe14 B crystal structure, which shows a metallic electrical conduction, is used to utilize a magnetic anisotropy peculiar to an R2 Fe14 B phase and the conversion element is formed into a crystal substance having a C-axis anistotropy, and can freely select crystalline orientation within a C face having a high Seeback effect. Moreover, a higher thermoelectromotive force and a higher current value are obtained by the conversion element compared with a conventional R-Fe-B sintered thermoelectric conversion element and moreover, by adding Si, Ge, Bi and Co, which have a high thermoelectric power, to the intermetallic compound, the conversion element generates a thermoelectromotive force, which is very high as the thermoelectric conversion element, and a current value, which is high as the thermoelectric conversion element. |
