Thermoelectric conversion material and thermoelectric conversion element
A technology of thermoelectric conversion materials and metal elements, which is applied in the direction of thermoelectric device node lead wire materials, fibrous fillers, inorganic pigments, etc., can solve the problems of unstable and poor thermoelectric conversion characteristics
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Embodiment 1
[0095] As raw materials, 3.074 g of CuO (manufactured by High Purity Chemical Laboratory Co., Ltd.), SnO 2 (manufactured by High Purity Chemical Research Institute Co., Ltd.) 5.825g, La 2 o 3 12.593 g (manufactured by Koshin Chemical Laboratory Co., Ltd.) was mixed for 20 hours using a wet ball mill (medium: balls made of zirconia). The mixture was calcined at 1100° C. for 24 hours in air, and pulverized for 20 hours using a wet ball mill (medium: zirconia balls) to obtain a powder. Using single-screw stamping (forming pressure: 1000kg / cm 2 ) molding the powder to obtain a disk-shaped compact. The molded body was sintered at 1100° C. for 24 hours in a 100% oxygen atmosphere to obtain a sintered body 1 . Various physical properties of the sintered body 1 are shown in Table 1. The X-ray diffraction pattern of the sintered body 1 is shown in figure 1 middle. In addition, the relative density of the sintered body 1 was 95%, and the thermal conductivity at room temperature (...
Embodiment 2
[0097] As raw materials, 1.537 g of CuO (manufactured by High Purity Chemical Laboratory Co., Ltd.), SnO 2 (manufactured by High Purity Chemical Research Institute Co., Ltd.) 2.912g, La 2 o 3 (manufactured by High Purity Chemical Laboratory Co., Ltd.) 6.139g, CaCO 3 (trade name: CS3N-A, Ube Material Co., Ltd. make) 0.097 g, and the same operation as Example 1 was performed, and the sintered body 2 was obtained. Various physical properties of the sintered body 2 are shown in Table 1. The thermal conductivity of the sintered body 2 at room temperature (about 25° C.) was 3.63 W / mK.
Embodiment 3
[0099] As raw materials, 1.537 g of CuO (manufactured by High Purity Chemical Laboratory Co., Ltd.), SnO 2 (manufactured by High Purity Chemical Research Institute Co., Ltd.) 2.912g, La 2 o 3 (manufactured by High Purity Chemical Laboratory Co., Ltd.) 6.139g, BaCO 3 (Trade name: LC-1, manufactured by Nippon Chemical Industry Co., Ltd.) Except for 0.191 g, the same operation as in Example 1 was performed to obtain a sintered body 3 . Various physical properties of the sintered body 3 are shown in Table 1. In addition, the thermal conductivity of the sintered body 3 at room temperature (about 25° C.) was 3.30 W / mK.
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