-
- HASEGAWA Shuhei
- Graduate student, Tokyo University of Science Dept. of Material Engineering
-
- NAKAMURA Takashi
- Graduate student, Tokyo University of Science Dept. of Material Engineering
-
- INOUE Ryo
- Tokyo University of Science Dept. of Material Engineering
-
- IIDA Tsutomu
- Tokyo University of Science Dept. of Material Engineering
-
- KOGO Yasuo
- Tokyo University of Science Dept. of Material Engineering
Bibliographic Information
- Other Title
-
- 216 Mg_2Si焼結体の機械的特性に及ぼす熱暴露の影響
Abstract
Mg_2Si (Magnesium silicide) has been expected as the materials used for thermoelectric (TE) technologies due to lightweight, abundance of its constituent elements and its non-toxicity. Because TE conversion devices are subjected to various thermo-mechanical loadings during operation, evaluation of the mechanical properties of Mg_2Si is necessary for designing reliable TE modules. Furthermore, Mg_2Si is used at 600℃ in the view of thermoelectric properties, however, the effect of heat exposure at 600 ℃ on the mechanical properties of Mg_2Si has not been sufficiently investigated. In the present study, therefore, mechanical properties of Mg_2Si after heat exposure at 600 ℃ were evaluated. The effect of holding time on the strength was also investigated. The specimen was cut from an as-sintered pellet and was polished and heated in Ar atmosphere at 600 ℃ for 100 h, 250 h, respectively. The four-point bending test was carried out on as-sintered and heat-exposed specimens to obtain bending strength at room temperature. The as-sintered specimen showed bending strength of 48 MPa on average. In case of 100 h heat-exposed specimen, the bending strength was almost equal to that of as-fabricated specimen. However, it increased after the heat exposure for 250 h up to about 90 MPa. The fracture surface observations revealed that the increase in strength is attributed to slight oxidation on the surface.
Journal
-
- The Proceedings of the Materials and processing conference
-
The Proceedings of the Materials and processing conference 2015.23 (0), _216-1_-_216-5_, 2015
The Japan Society of Mechanical Engineers
- Tweet
Details 詳細情報について
-
- CRID
- 1390282680855386752
-
- NII Article ID
- 110010050356
-
- ISSN
- 2424287X
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed