抄録
Shear extrusion processing with combination of bulk mechanical alloying is proposed to yield the p-type Bi-Te-Sb materials from elemental granules. It has a well-developed texture so as to improve the electrical conductivity and thermoelectric properties. The shear extrusion processing in the Bi 0.4Sb1.6Te3 and Bi0.5Sb 1.5Te3 alloy green compact improves the preferred orientation factor of anisotropic crystallographic structure: F = 0.63 for Bi0.4Sb1.6Te3 and F = 0.49 for Bi 0.5Sb1.5Te3, respectively. The electrical resistivity of Bi0.4Sb1.6Te3 is well-controlled to be 0.989×10-5Ωm, which is one-half of the hot-pressed specimen. Maximum power factor of Bi0.4Sb1.6Te 3 is achieved to 4.33×10-3W/mK2. The bending strength of the material produced is also improved to be 120MPa, six times larger than that for the zone-melt specimen.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 107-113 |
| ページ数 | 7 |
| ジャーナル | Journal of Alloys and Compounds |
| 巻 | 375 |
| 発行部数 | 1-2 |
| DOI | |
| 出版物ステータス | Published - 2004 7 28 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Metals and Alloys
これを引用
Thermoelectric properties of anisotropy-controlled p-type Bi-Te-Sb system via bulk mechanical alloying and shear extrusion. / Kim, S. S.; Yamamoto, S.; Aizawa, T.
：: Journal of Alloys and Compounds, 巻 375, 番号 1-2, 28.07.2004, p. 107-113.研究成果: Article
}
TY - JOUR
T1 - Thermoelectric properties of anisotropy-controlled p-type Bi-Te-Sb system via bulk mechanical alloying and shear extrusion
AU - Kim, S. S.
AU - Yamamoto, S.
AU - Aizawa, T.
PY - 2004/7/28
Y1 - 2004/7/28
N2 - Shear extrusion processing with combination of bulk mechanical alloying is proposed to yield the p-type Bi-Te-Sb materials from elemental granules. It has a well-developed texture so as to improve the electrical conductivity and thermoelectric properties. The shear extrusion processing in the Bi 0.4Sb1.6Te3 and Bi0.5Sb 1.5Te3 alloy green compact improves the preferred orientation factor of anisotropic crystallographic structure: F = 0.63 for Bi0.4Sb1.6Te3 and F = 0.49 for Bi 0.5Sb1.5Te3, respectively. The electrical resistivity of Bi0.4Sb1.6Te3 is well-controlled to be 0.989×10-5Ωm, which is one-half of the hot-pressed specimen. Maximum power factor of Bi0.4Sb1.6Te 3 is achieved to 4.33×10-3W/mK2. The bending strength of the material produced is also improved to be 120MPa, six times larger than that for the zone-melt specimen.
AB - Shear extrusion processing with combination of bulk mechanical alloying is proposed to yield the p-type Bi-Te-Sb materials from elemental granules. It has a well-developed texture so as to improve the electrical conductivity and thermoelectric properties. The shear extrusion processing in the Bi 0.4Sb1.6Te3 and Bi0.5Sb 1.5Te3 alloy green compact improves the preferred orientation factor of anisotropic crystallographic structure: F = 0.63 for Bi0.4Sb1.6Te3 and F = 0.49 for Bi 0.5Sb1.5Te3, respectively. The electrical resistivity of Bi0.4Sb1.6Te3 is well-controlled to be 0.989×10-5Ωm, which is one-half of the hot-pressed specimen. Maximum power factor of Bi0.4Sb1.6Te 3 is achieved to 4.33×10-3W/mK2. The bending strength of the material produced is also improved to be 120MPa, six times larger than that for the zone-melt specimen.
KW - Anisotropy
KW - Bismuth telluride
KW - Orientation factor
KW - Shear extrusion processing
UR - http://www.scopus.com/inward/record.url?scp=2942678960&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2942678960&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2003.11.141
DO - 10.1016/j.jallcom.2003.11.141
M3 - Article
AN - SCOPUS:2942678960
VL - 375
SP - 107
EP - 113
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -