- 著者
-
大塚 愛子
川崎 亮
渡辺 龍三
厳 泰永
- 出版者
- Japan Society of Powder and Powder Metallurgy
- 雑誌
- 粉体および粉末冶金 (ISSN:05328799)
- 巻号頁・発行日
- vol.45, no.3, pp.220-224, 1998-03-15
- 参考文献数
- 7
- 被引用文献数
-
3
12
Disk-shaped functionally graded materials of copper/alumina system have been fabricated by spark plasma sintering(SPS process. The graded layer consists of symmetrical compositional transition of Cu/Al<SUB>2</SUB>O<SUB>3</SUB>/Cu, which allows to achieve high heat conduction, electrical insulation and excellent in-plane electrical conductivity. The use of the FGMs as a compliant pad of conduction type of thermoelectric power conversion system offers high thermal energy density through the thermoelectric cell, resulting in the increase of the efficiency of thermoelectric energy conversion.<BR>This paper describes the process optimization including densification of metal-ceramic powder mixtures by SPS process, compositionally graded stacking of the mixed powders in a graphite die, the design of the compositional gradient on the basis of one dimensional heat conduction analysis and fabrication of Cu/Al<SUB>2</SUB>O<SUB>3</SUB>/Cu FGMs according to the predesigned compositional gradient.